POSC Specifications Version 3.0 |
Epicentre Standard Values geodetic_datum |
Alias values exist. Go to alias_geodetic_datum.
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
ellipsoid .identifier | naming _system .identifier | prime _meridian .identifier | ref _version .identifier | ||||||
Unknown | Unknown | POSC basic | Greenwich | Use if the datum is unknown | POSC | epicentre 2.1 | current | ||
Unknown Airy 1830 | Airy 1830 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Airy 1830 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Airy Modified 1849 | Airy Modified 1849 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Airy Modified 1849 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Australian National Spheroid | Australian National Spheroid | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Australian National Spheroid | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Bessel 1841 | Bessel 1841 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Bessel 1841 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Bessel Modified | Bessel Modified | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Bessel Modified | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Bessel Namibia | Bessel Namibia | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Bessel Namibia | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1858 | Clarke 1858 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1858 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1866 | Clarke 1866 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1866 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1866 Michigan | Clarke 1866 Michigan | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1866 Michigan | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1880 (Benoit) | Clarke 1880 (Benoit) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1880 (Benoit) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1880 (IGN) | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1880 (IGN) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1880 (RGS) | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1880 (RGS) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1880 (Arc) | Clarke 1880 (Arc) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1880 (Arc) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1880 (SGA 1922) | Clarke 1880 (SGA 1922) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1880 (SGA 1922) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Everest 1830 (1937 Adjustment) | Everest 1830 (1937 Adjustment) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Everest 1830 (1937 Adjustment) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Everest 1830 (1967 Definition) | Everest 1830 (1967 Definition) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Everest 1830 (1967 Definition) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Everest 1830 Modified | Everest 1830 Modified | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Everest 1830 Modified | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown GRS 1980 | GRS 1980 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be GRS 1980 | EPSG | EPSG | POSC | epicentre 3.0 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Unknown Helmert 1906 | Helmert 1906 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Helmert 1906 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Indonesian National Spheroid | Indonesian National Spheroid | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Indonesian National Spheroid | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown International 1924 | International 1924 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be International 1924 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Krassowsky 1940 | Krassowsky 1940 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Krassowsky 1940 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown NWL 9D | NWL 9D | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be NWL 9D | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Plessis 1817 | Plessis 1817 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Plessis 1817 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Struve 1860 | Struve 1860 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Struve 1860 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown War Office | War Office | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be War Office | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown WGS 84 | WGS 84 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be WGS 84 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown GEM 10C | GEM 10C | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be GEM 10C | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown OSU86F | OSU86F | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be OSU86F | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown OSU91A | OSU91A | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be OSU91A | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Clarke 1880 | Clarke 1880 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Clarke 1880 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Sphere | Sphere | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Sphere | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown GRS 1967 | GRS 1967 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be GRS 1967 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Average Terrestrial System 1977 | Average Terrestrial System 1977 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Average Terrestrial System 1977 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Everest (1830 Definition) | Everest (1830 Definition) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Everest (1830 Definition) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown WGS 72 | WGS 72 | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be WGS 72 | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Everest 1830 (1962 Definition) | Everest 1830 (1962 Definition) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Everest 1830 (1962 Definition) | EPSG | EPSG | POSC | epicentre 3.0 | current |
Unknown Everest 1830 (1975 Definition) | Everest 1830 (1975 Definition) | EPSG preferred name | Greenwich | Remarks: Not a valid datum. Included for coordinate systems where datum is unknown. However, the ellipse is known to be Everest 1830 (1975 Definition) | EPSG | EPSG | POSC | epicentre 3.0 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Greek | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental point: Athens Observatory; latitude 37 deg 58 min 20.132 sec N; longitude 23 deg 42 min 58.815 sec E of Greenwich Remarks: See geodetic datum alias 6404. Used as basis of topographic mapping based on Hatt projection. | Topography Department; National Technical University of Athens | EPSG | POSC | epicentre 2.2 | current |
GGRS87 | GRS 1980 | EPSG preferred name | Greenwich | Fundamental point: Dionysos; latitude 38 deg 04 min 33.8 sec N; longitude 23 deg 55 min 51.0 sec E of Greenwich; geoid height 7.0 m. Remarks: Superseded (old) Greek datum. Oil industry work based on ED50. | L. Portokalakis; Public Petroleum Corporation of Greece | EPSG | POSC | epicentre 2.2 | current |
ATS77 | Average Terrestrial System 1977 | EPSG preferred name | Greenwich | Remarks: In use from 1979. To be phased out in late 1990's. | New Brunswick Geographic Information Corporation land and water information standards manual. | EPSG | POSC | epicentre 2.2 | current |
KKJ | International 1924 | EPSG preferred name | Greenwich | Adjustment with fundamental point based on ED50 transformed to best fit the older VVJ adjustment. Remarks: Adopted in 1970. | www.nls.fi/maa/papers/kkj.html | EPSG | POSC | epicentre 2.2 | current |
RT90 | Bessel 1841 | EPSG preferred name | Greenwich | Remarks: Supersedes RT38 adjustment (datum code 6308) | National Land Survey of Sweden | EPSG | POSC | epicentre 2.2.1 | current |
Samboja | Bessel 1841 | EPSG preferred name | Greenwich | Original origin station P2 Exc now destroyed. Extensions recomputed using Toran station T9 as origin. | Total Indonesia. | EPSG | POSC | epicentre 2.2.1 | current |
LKS94 (ETRS89) | GRS 1980 | EPSG preferred name | Greenwich | Densification from 4 ETRF89 points. Remarks: Densification of ETRS89 during the 1992 Baltic campaign. | HNIT-Baltic GeoInfoServisas | EPSG | POSC | epicentre 2.2.1 | current |
Tete | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental point: Tete. | Mozambique Direccao Nacional de Geografia e Cadastral (DINAGECA). | EPSG | POSC | epicentre 2.2.2 | current |
Madzansua | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental point: Madzansua. Remarks: Superseded by transformation to Tete datum (datum code 6127). | Mozambique Direccao Nacional de Geografia e Cadastral (DINAGECA). | EPSG | POSC | epicentre 2.2.2 | current |
Observatario | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental point: Maputo observatory. Remarks: Superseded by transformation to Tete datum (datum code 6127). | Mozambique Direccao Nacional de Geografia e Cadastral (DINAGECA). | EPSG | POSC | epicentre 2.2.2 | current |
Moznet | WGS 84 | EPSG preferred name | Greenwich | ITRF 1994 epoch 20 | Mozambique Direccao Nacional de Geografia e Cadastral (DINAGECA). | EPSG | POSC | epicentre 2.2.2 | current |
Indian 1960 | Everest 1830 (1937 Adjustment) | EPSG preferred name | Greenwich | Remarks: DMA adjustment of IndoChina part of the Indian 1954 network to better fit local geoid. Also known as Indian (DMA Reduced). | EPSG | POSC | epicentre 2.2.2 | current | |
FD58 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: Maniyur. Latitude: 31 deg 23 min 59.19 sec N; Longitude: 48 deg 32 min 31.38 sec E (of Greenwich). Remarks: Network included in Nahrwan 1967 adjustment. | IOEPC records | EPSG | POSC | epicentre 2.2.2 | current |
EST92 | GRS 1980 | EPSG preferred name | Greenwich | Densification from 4 ETRS89 points. Remarks: Based on ETRS89 as established during the 1992 Baltic campaign. | http://www.geo.ut.ee/~raivo/estcoord.html | EPSG | POSC | epicentre 3.0 | current |
PSD93 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Adjustment best fitted to Fahud network. Remarks: Supersedes Fahud datum (code 6232). Maximum differences to Fahud adjustment are 20 metres. | Petroleum Development Oman | EPSG | POSC | epicentre 3.0 | current |
Old Hawaiian | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental Point: Oahu West Base Astro. Latitude: 21 deg 18 min 13.89 sec N; longitude 157 deg 50 min 55.79 sec W (of Greenwich) Remarks: Hawaiian Islands were never on NAD27 but rather on Old Hawaiian Datum. NADCON conversion program provides transformation from Old Hawaiian Datum to NAD83 (original 1986 realization) but making the transformation appear to user as if from NAD27. | http://www.ngs.noaa.gov/ (NADCON readme file) and the NIMA publication http://164.214.2.59/publications/guides/Datum_Pamphlet/datum.html | EPSG | POSC | epicentre 3.0 | current |
St. Lawrence Island | Clarke 1866 | EPSG preferred name | Greenwich | Remarks: Many Alaskan islands were never on NAD27 but rather on independent datums. NADCON conversion program provides transformation from St. Lawrence Island Datum to NAD83 (original 1986 realization) - making the transformation appear to user as if from NAD27. | http://www.ngs.noaa.gov/ (NADCON readme file) | EPSG | POSC | epicentre 3.0 | current |
St. Paul Island | Clarke 1866 | EPSG preferred name | Greenwich | Remarks: Many Alaskan islands were never on NAD27 but rather on independent datums. NADCON conversion program provides transformation from St. Paul Island Datum to NAD83 (original 1986 realization) - making the transformation appear to user as if from NAD27. | http://www.ngs.noaa.gov/ (NADCON readme file) | EPSG | POSC | epicentre 3.0 | current |
St. George Island | Clarke 1866 | EPSG preferred name | Greenwich | Remarks: Many Alaskan islands were never on NAD27 but rather on independent datums. NADCON conversion program provides transformation from St. George Island Datum to NAD83 (original 1986 realization) - making the transformation appear to user as if from NAD27. | http://www.ngs.noaa.gov/ (NADCON readme file) | EPSG | POSC | epicentre 3.0 | current |
Puerto Rico | Clarke 1866 | EPSG preferred name | Greenwich | Remarks: NADCON conversion program provides transformation from Puerto Rico Datum to NAD83 (original 1986 realization) but making the transformation appear to user as if from NAD27. | Ordnance Survey of Great Britain and http://www.ngs.noaa.gov/ (NADCON readme file). | EPSG | POSC | epicentre 3.0 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
NAD83(CSRS98) | GRS 1980 | EPSG preferred name | Greenwich | Remarks: Supersedes ATS77 from 1999 in New Brunswick. | Service New Brunswick Land and Information Standards Manual | EPSG | POSC | epicentre 3.0 | current |
Israel | GRS 1980 | EPSG preferred name | Greenwich | Fundamental Point: Latitude: 31 deg 44 min 03.817 sec N; Longitude: 35 deg 12 min 16.261 sec E (of Greenwich). | Survey of Israel. | EPSG | POSC | epicentre 3.0 | current |
Locodjo 1965 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental Point: T5 Banco. Latitude: 5 deg 18 min 50.5 sec N; Longitude: 4 deg 02 min 05.1 sec W (of Greenwich). | IGN Paris. | EPSG | POSC | epicentre 3.0 | current |
Abidjan 1987 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental Point: Abidjan I. Latitude: 5 deg 18 min 51.01 sec N; Longitude: 4 deg 02 min 06.04 sec W (of Greenwich). | IGN Paris. | EPSG | POSC | epicentre 3.0 | current |
Kalianpur 1937 | Everest 1830 (1937 Adjustment) | EPSG preferred name | Greenwich | Fundamental Point: Kalianpur. Latitude: 24 deg 07 min 11.260 sec N; Longitude: 77 deg 39 min 17.570 sec E (of Greenwich). Remarks: Supersedes 1880 adjustment except for topographic mapping. Superseded in Pakistan by 1962 metrication conversion and in India by 1975 metrication conversion. | G. Bomford; The Re-adjustment of the Indian Triangulation; Survey of India Professional Paper 28; 1939. | EPSG | POSC | epicentre 3.0 | current |
Kalianpur 1962 | Everest 1830 (1962 Definition) | EPSG preferred name | Greenwich | Fundamental Point: Kalianpur. Latitude: 24 deg 07 min 11.260 sec N; Longitude: 77 deg 39 min 17.570 sec E (of Greenwich). Remarks: 1937 adjustment rescaled by ratio metric conversions of Indian foot (1937) to Indian foot (1962). | EPSG | POSC | epicentre 3.0 | current | |
Kalianpur 1975 | Everest 1830 (1975 Definition) | EPSG preferred name | Greenwich | Fundamental Point: Kalianpur. Latitude: 24 deg 07 min 11.260 sec N; Longitude: 77 deg 39 min 17.570 sec E (of Greenwich). Remarks: 1937 adjustment rescaled by ratio metric conversions of Indian foot (1937) to Indian foot (1975). | EPSG | POSC | epicentre 3.0 | current | |
Hanoi 1972 | Krassowsky 1940 | EPSG preferred name | Greenwich | PetroVietnam | EPSG | POSC | epicentre 3.0 | current | |
Hartebeesthoek94 | WGS 84 | EPSG preferred name | Greenwich | Coincident with ITRF91 (1994.0) at Hartebeesthoek astronomical observatory near Pretoria. Remarks: Supersedes Cape datum (code 6222). | Directorate of Surveys and Mapping; http://w3sli.wcape.gov.za/surveys/mapping/wgs84.htm | EPSG | POSC | epicentre 3.0 | current |
CH1903 | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Old Bern observatory. Latitude: 46 deg 57 min 8.660 sec N; Longitude: 7 deg 26 min 22.500 sec E (of Greenwich). | Bundesamt fur Landestopographie | EPSG | POSC | epicentre 3.0 | current |
CH1903+ | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Old Bern observatory. Latitude: 46 deg 57 min 8.660 sec N; Longitude: 7 deg 26 min 22.500 sec E (of Greenwich). | Bundesamt fur Landestopographie. Aufbau der Landesvermessung der Schweiz 'LV95' Teil 3: Terrestrische Bezugssysteme und Bezugsrahmen. L+T 1999. | EPSG | POSC | epicentre 3.0 | current |
CHTRF95 | GRS 1980 | EPSG preferred name | Greenwich | ETRF89 at 1993.0 | Bundesamt fur Landestopographie. Aufbau der Landesvermessung der Schweiz 'LV95' Teil 3: Terrestrische Bezugssysteme und Bezugsrahmen. L+T 1999. | EPSG | POSC | epicentre 3.0 | current |
NAD83(HARN) | GRS 1980 | EPSG preferred name | Greenwich | National Geodetic Survey | EPSG | POSC | epicentre 3.0 | current | |
Rassadiran | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Total1. Latitude: 27 deg 31 min 07.784 sec N; Longitude: 52 deg 36 min 12.741 sec E (of Greenwich). | Total-Fina | EPSG | POSC | epicentre 3.0 | current |
ED50(ED77) | International 1924 | EPSG preferred name | Greenwich | Extension of ED50 over Iran. Remarks: Sometimes referred to as ED50-ED77. | National Cartographic Centre of Iran | EPSG | POSC | epicentre 3.0 | current |
Dabola 1981 | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | IGN Paris | EPSG | POSC | epicentre 3.0 | current | |
S-JTSK | Bessel 1841 | EPSG preferred name | Greenwich | Modification of Austrian MGI datum, code 6312. Remarks: S-JTSK = System of the Unified Trigonometrical Cadastral Network. | Research Institute for Geodesy Topography and Cartography (VUGTK); Prague. | EPSG | POSC | epicentre 3.0 | current |
Mount Dillon | Clarke 1858 | EPSG preferred name | Greenwich | Fundamental Point: Mount Dillon triangulation station. Latitude: 11 deg 15 min 07.843 sec N; Longitude: 60 deg 41 min 09.632 sec W (of Greenwich). | University of the West Indies Geodetic Services. | EPSG | POSC | epicentre 3.0 | current |
Naparima 1955 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Naparima. Latitude: 10 deg 16 min 44.860 sec N; Longitude: 61 deg 27 min 34.620 sec W (of Greenwich). Remarks: Naparima 1972 is an extension of the Naparima 1955 network of Trinidad to include Tobago. | Ordnance Survey International. | EPSG | POSC | epicentre 3.0 | current |
ELD79 | International 1924 | EPSG preferred name | Greenwich | Brown and Root | EPSG | POSC | epicentre 3.0 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Chos Malal 1914 | International 1924 | EPSG preferred name | Greenwich | Chos Malal police station. Remarks: Also known as Quini-Huao. Superseded by Campo Inchauspe (code 6221). | Various oil company records. | EPSG | POSC | epicentre 3.0 | current |
Pampa del Castillo | International 1924 | EPSG preferred name | Greenwich | Remarks: Used in Comodoro Rivadavia area. Superseded by Campo Inchauspe (code 6221). | Various oil company records. | EPSG | POSC | epicentre 3.0 | current |
Korean Datum 1985 | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental point: Suwon; latitude 37 deg 16 min 31.9034 sec N; longitude 127 deg 03 min 05.1451 sec E of Greenwich. | Clifford J. Mugnier; Photogrammetric Engineering and Remote Sensing. | EPSG | POSC | epicentre 3.0 | current |
YNGN96 | WGS 84 | EPSG preferred name | Greenwich | Sana'a IGN reference marker | IGN Paris | EPSG | POSC | epicentre 3.0 | current |
South Yemen | Krassowsky 1940 | EPSG preferred name | Greenwich | IGN Paris | EPSG | POSC | epicentre 3.0 | current | |
Bissau | International 1924 | EPSG preferred name | Greenwich | NIMA TR8350.2 | EPSG | POSC | epicentre 3.0 | current | |
Korean Datum 1995 | WGS 84 | EPSG preferred name | Greenwich | NIMA TR8350.2 ftp://164.214.2.65/pub/gg/tr8350.2/changes.pdf | EPSG | POSC | epicentre 3.0 | current | |
Pulkovo 1995 | Krassowsky 1940 | EPSG preferred name | Greenwich | Fundamental Point: Pulkovo observatory. Latitude: 59 deg 46 min 15.359 sec N; Longitude: 30 deg 19 min 28.318 sec E (of Greenwich). | Main Terms of Reference for the State Geodetic Network; Federal Geodetic Service of Russia; 1994 | EPSG | POSC | epicentre 2.2 | current |
Adindan | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental Point: Station 15; Adindan. Latitude: 22 deg 10 min 7.110 sec N; Longitude: 31 deg 29 min 21.608 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
AGD66 | Australian National Spheroid | EPSG preferred name | Greenwich | Fundamental Point: Johnson Memorial. Latitude: 25 deg 56 min 54.551 sec S; Longitude: 133 deg 12 min 30.077 sec E (of Greenwich). | Australian Map Grid Technical Manual. National Mapping Council of Australia Technical Publication 7; 1972. | EPSG | POSC | epicentre 2.1 | current |
AGD84 | Australian National Spheroid | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Ain el Abd | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Ain El Abd. Latitude: 28 deg 14 min 06.171 sec N; Longitude: 48 deg 16 min 20.906 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Afgooye | Krassowsky 1940 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Agadez | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Lisbon | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Castelo Sao Jorge; Lisbon. Latitude: 38 deg 42 min 43.631 sec N; Longitude: 9 deg 07 min 54.862 sec W (of Greenwich). | Instituto Geografico e Cadastral; Lisbon | EPSG | POSC | epicentre 2.1 | current |
Aratu | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Arc 1950 | Clarke 1880 (Arc) | EPSG preferred name | Greenwich | Fundamental Point: Buffelsfontein. Latitude: 33 deg 59 min 32.000 sec S; Longitude: 25 deg 30 min 44.622 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Arc 1960 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental Point: Buffelsfontein. Latitude: 33 deg 59 min 32.000 sec S; Longitude: 25 deg 30 min 44.622 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Batavia | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Batavia Astro. Station. Latitude: 6 deg 7 min 39.520 sec S; Longitude: 106 deg 48 min 27.790 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Barbados 1938 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: HMS Challenger astro station M1; latitude 13 deg 04 min 32.53 sec N; longitude 59 deg 36 min 29.34 sec W (of Greenwich). | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Beduaram | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Beijing 1954 | Krassowsky 1940 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Belge 1950 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Lommel (tower). Latitude: 51 deg 13 min 47.334 sec N; Longitude: 0 deg 56 min 44.773 sec E (of Brussels). | EPSG | POSC | epicentre 2.1 | current | |
Bermuda 1957 | Clarke 1866 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Bogota | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Bogota observatory. Latitude: 4 deg 35 min 56.570 sec N; Longitude: 74 deg 4 min 51.300 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Bukit Rimpah | Bessel 1841 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Camacupa | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.2 | current | ||
Campo Inchauspe | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Campo Inchauspe. Latitude: 35 deg 58 min 17.000 sec S; Longitude: 62 deg 10 min 12.000 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Cape | Clarke 1880 (Arc) | EPSG preferred name | Greenwich | Fundamental Point: Buffelsfontein. Latitude: 33 deg 59 min 32.000 sec S; Longitude: 25 deg 30 min 44.622 sec E (of Greenwich). | Private Communication, Directorate of Surveys and Land Information, Cape Town. | EPSG | POSC | epicentre 2.2 | current |
Carthage | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Chua | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Chua. Latitude: 19 deg 45 min 41.160 sec S; Longitude: 48 deg 6 min 7.560 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Corrego Alegre | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Corrego Alegre. Latitude: 19 deg 50 min 15.140 sec S; Longitude: 48 deg 57 min 42.750 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Cote d'Ivoire | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Deir ez Zor | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | Fundamental Point: Trig. 254 Deir. Latitude: 35 deg 21 min 49.975 sec N; Longitude: 40 deg 5 min 46.770 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Douala | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Egypt 1907 | Helmert 1906 | EPSG preferred name | Greenwich | Fundamental Point: Station F1. Latitude: 30 deg 1 min 42.860 sec N; Longitude: 31 deg 16 min 33.600 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
ED50 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Potsdam (Helmert Tower). Latitude: 52 deg 22 min 51.450 sec N; Longitude: 13 deg 3 min 58.740 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
ED87 | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Fahud | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental Point: Station NO68-024 Fahud. Latitude: 22 deg 17 min 31.182 sec N; Longitude: 56 deg 29 min 18.820 sec E (of Greenwich). Remarks: Superseded by PSD93 (code 6134). | Petroleum Development Oman. | EPSG | POSC | epicentre 2.1 | current |
Gandajika 1970 | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Garoua | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Guyane Francaise | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Hu Tzu Shan | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
HD72 | GRS 1967 | EPSG preferred name | Greenwich | Fundamental Point: Szolohegy. Latitude: 47 deg 17 min 32,6156 sec N; Longitude 19 deg 36 min 09.9865 sec E; geoid height 6.56m. | http://lazarus.elte.hu/gb/geodez/geod3.htm | EPSG | POSC | epicentre 2.2 | current |
ID74 | Indonesian National Spheroid | EPSG preferred name | Greenwich | Fundamental Point: Padang. Latitude: 0 deg 56 min 38.414 sec S; Longitude: 100 deg 22 min 8.804 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Indian 1954 | Everest 1830 (1937 Adjustment) | EPSG preferred name | Greenwich | Fundamental Point: Kalianpur. Latitude: 24 deg 07 min 11.260 sec N; Longitude: 77 deg 39 min 17.570 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Indian 1975 | Everest 1830 (1937 Adjustment) | EPSG preferred name | Greenwich | Fundamental Point: Khau Sakaerang | EPSG | POSC | epicentre 2.1 | current | |
Jamaica 1875 | Clarke 1880 | EPSG preferred name | Greenwich | Fundamental Point: Fort Charles Flagstaff. Latitude: 17 deg 55 min 55.800 sec N; Longitude: 76 deg 56 min 37.260 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
JAD69 | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental Point: Fort Charles Flagstaff. Latitude: 17 deg 55 min 55.800 sec N; Longitude: 76 deg 56 min 37.260 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Kalianpur 1880 | Everest (1830 Definition) | EPSG preferred name | Greenwich | Fundamental Point: Kalianpur. Latitude: 24 deg 07 min 11.260 sec N; Longitude: 77 deg 39 min 17.570 sec E (of Greenwich). Remarks: Includes 1916 extrension into Burma (Myanmar). Superseded by 1937 adjustment. | G. Bomford; The Re-adjustment of the Indian Triangulation; Survey of India Professional Paper 28; 1939. | EPSG | POSC | epicentre 3.0 | current |
Kandawala | Everest 1830 (1937 Adjustment) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Kertau | Everest 1830 Modified | EPSG preferred name | Greenwich | Fundamental Point: Kertau. Latitude: 3 deg 27 min 50.710 sec N; Longitude: 102 deg 37 min 24.550 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
KOC | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
La Canoa | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: La Canoa. Latitude: 8 deg 34 min 17.170 sec N; Longitude: 63 deg 51 min 34.880 sec W (of Greenwich). Remarks: Origin also adopted for PSAD56. | EPSG | POSC | epicentre 2.1 | current | |
PSAD56 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: La Canoa. Latitude: 8 deg 34 min 17.170 sec N; Longitude: 63 deg 51 min 34.880 sec W (of Greenwich). Remarks: Same origin as La Canoa datum. | EPSG | POSC | epicentre 2.1 | current | |
Lake | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Maracaibo Cathedral. Latitude: 10 deg 38 min 34.678 sec N; Longitude: 71 deg 36 min 20.224 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Leigon | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental Point: GCS Station 121. Latitude: 5 deg 38 min 52.270 sec N; Longitude: 0 deg 11 min 46.080 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Liberia 1964 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Lome | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Luzon 1911 | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental Point: Balacan. Latitude: 13 deg 33 min 41.000 sec N; Longitude: 121 deg 52 min 03.000 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Hito XVIII 1963 | International 1924 | EPSG preferred name | Greenwich | Chile-Argentina boundary survey. Remarks: Used in Tierra del Fuego. | Various oil company records. | EPSG | POSC | epicentre 2.1 | current |
Herat North | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Mahe 1971 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental Point: Mahe | EPSG | POSC | epicentre 2.1 | current | |
Makassar | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Moncongloe | EPSG | POSC | epicentre 2.1 | current | |
ETRF89 | GRS 1980 | EPSG preferred name | Greenwich | Remarks: Coincides with WGS84 at the one metre level. | EPSG | POSC | epicentre 3.0 | current | |
Malongo 1987 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Station Y at Malongo base camp. Latitude: 5 deg 23 min 34.327 sec S; Longitude: 12 deg 12 min 02.393 sec E (of Greenwich). Remarks: Offshore extension of Mhast datum (6264) using Transit translocation. | Chevron Petroleum Technology. | EPSG | POSC | epicentre 2.1 | current |
Manoca | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Merchich | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Massawa | Bessel 1841 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Minna | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental Point: Minna base station L40. Latitude: 9 deg 38 min 09.000 sec N; Longitude: 6 deg 30 min 59.000 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Mhast | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Monte Mario | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Monte Mario. Latitude: 41 deg 55 min 25.510 sec N; Longitude: 0 deg 00 min 00.000 sec E (of Rome). | EPSG | POSC | epicentre 2.1 | current | |
M'poraloko | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
NAD27 | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental Point: Meade's Ranch. Latitude: 39 deg 13 min 26.686 sec N; Longitude: 98 deg 32 min 30.506 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
NAD Michigan | Clarke 1866 Michigan | EPSG preferred name | Greenwich | Fundamental Point: Meade's Ranch. Latitude: 39 deg 13 min 26.686 sec N; Longitude: 98 deg 32 min 30.506 sec W (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
NAD83 | GRS 1980 | EPSG preferred name | Greenwich | Origin at geocentre. | EPSG | POSC | epicentre 2.1 | current | |
Nahrwan 1967 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: Nahrwan south base. Latitude: 33 deg 19 min 10.87 sec N; Longitude: 44 deg 43 min 25.54 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Naparima 1972 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Naparima. Latitude: 10 deg 16 min 44.860 sec N; Longitude: 61 deg 27 min 34.620 sec W (of Greenwich). Remarks: Naparima 1972 is an extension of the Naparima 1955 network of Trinidad to include Tobago. | Ordnance Survey International. | EPSG | POSC | epicentre 2.1 | current |
GD49 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Papatahi. Latitude: 41 deg 19 min 8.900 sec S; Longitude: 175 deg 02 min 51.000 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
NGO 1948 | Bessel Modified | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Datum 73 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Latitude: 39 deg 41 min 37.30 sec N; Longitude: 8 deg 07 min 53.31 sec W (of Greenwich). | Instituto Geografico e Cadastral; Lisbon | EPSG | POSC | epicentre 2.1 | current |
NTF | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | Fundamental Point: Pantheon | EPSG | POSC | epicentre 2.1 | current | |
NSWC 9Z-2 | NWL 9D | EPSG preferred name | Greenwich | Remarks: Transit precise ephemeris before 1991. | EPSG | POSC | epicentre 2.1 | current | |
OSGB 1936 | Airy 1830 | EPSG preferred name | Greenwich | Fundamental Point: Herstmonceux. Latitude: 50 deg 51 min 55.271 sec N; Longitude: 0 deg 20 min 45.882 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
OSGB70 | Airy 1830 | EPSG preferred name | Greenwich | Fundamental Point: Herstmonceux. Latitude: 50 deg 51 min 55.271 sec N; Longitude: 0 deg 20 min 45.882 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
OS(SN)80 | Airy 1830 | EPSG preferred name | Greenwich | Fundamental Point: Herstmonceux. Latitude: 50 deg 51 min 55.271 sec N; Longitude: 0 deg 20 min 45.882 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Padang | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Padang | EPSG | POSC | epicentre 2.1 | current | |
Palestine 1923 | Clarke 1880 (Benoit) | EPSG preferred name | Greenwich | Fundamental Point: Point 82'M Jerusalem. Latitude: 31 deg 44 min 2.749 sec N; Longitude: 35 deg 12 min 43.490 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Pointe Noire | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | Fundamental Point: Point Noire Astro. Latitude: 4 deg 47 min 0.100 sec S; Longitude: 11 deg 51 min 1.550 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
GDA94 | GRS 1980 | EPSG preferred name | Greenwich | Remarks: Coincident with WGS84 to within 1 metre. | Australian Surveying and Land Information Group Internet WWW page. | EPSG | POSC | epicentre 2.1 | current |
Pulkovo 1942 | Krassowsky 1940 | EPSG preferred name | Greenwich | Fundamental Point: Pulkovo observatory. Latitude: 59 deg 46 min 18.550 sec N; Longitude: 30 deg 19 min 42.090 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Qatar | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Station G3 | EPSG | POSC | epicentre 2.1 | current | |
Qatar 1948 | Helmert 1906 | EPSG preferred name | Greenwich | Fundamental Point: Sokey 0 M. Latitude: 25 deg 22 min 56.500 sec N; Longitude: 50 deg 45 min 41.000 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Qornoq | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Loma Quintana | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Loma Quintana Remarks: Superseded by La Canoa (code 6247). | EPSG | POSC | epicentre 2.1 | current | |
Amersfoort | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Amersfoort. Latitude: 52 deg 09 min 22.178 sec N; Longitude: 5 deg 23 min 15.478 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
SAD69 | GRS 1967 | EPSG preferred name | Greenwich | Remarks: SAD69 uses GRS67 ellipsoid with 1/f to exactly 2 decimal places. Precision of ellipsoid entry increased from 2 to 5 dp with change id 97.252. Error introduced if not using the truncated precision is 0 to 31mm. | EPSG | POSC | epicentre 2.2 | current | |
Sapper Hill 1943 | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Schwarzeck | Bessel Namibia | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Segora | Bessel 1841 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Serindung | Bessel 1841 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Sudan | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Tananarive | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Tananarive observatory. Latitude: 18 deg 55 min 2.100 sec S; Longitude: 45 deg 12 min 52.800 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Timbalai 1948 | Everest 1830 (1967 Definition) | EPSG preferred name | Greenwich | Fundamental Point: Timbalai. Latitude: 5 deg 17 min 3.548 sec N; Longitude: 115 deg 10 min 56.409 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
TM65 | Airy Modified 1849 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
TM75 | Airy Modified 1849 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Tokyo | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Nikon-Keido-Genten. Latitude: 35 deg 39 min 17.5148 sec N; Longitude: 139 deg 44 min 40.5020 sec E (of Greenwich). | Geographic Survey Institute; Japan; Bulletin 40 (March 1994). Also http://vldb.gsi-mc.go.jp/sokuchi/datum/tokyodatum.html | EPSG | POSC | epicentre 2.1 | current |
Trinidad 1903 | Clarke 1858 | EPSG preferred name | Greenwich | Harbour Master's Flagstaff; Port of Spain. | EPSG | POSC | epicentre 2.1 | current | |
TC(1948) | Helmert 1906 | EPSG preferred name | Greenwich | Fundamental Point: TC1. Latitude: 25 deg 23 min 50.190 sec N; Longitude: 55 deg 26 min 43.950 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Voirol 1875 | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | Fundamental Point: Voirol. Latitude: 40.835864 grads N; Longitude: 0.788735 grads E of Paris. | IGN Paris | EPSG | POSC | epicentre 2.1 | current |
Bern 1938 | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Old Bern observatory. Latitude: 46 deg 57 min 7.890 sec N; Longitude: 7 deg 26 min 22.335 sec E (of Greenwich). Remarks: This redetermination of the coordinates of fundamental point is used for scientific purposes and as the graticule overprinted on topographic maps constructed on the CH1903 / LV03 projected CS (code 21781). | Die Projektionen der schweizerischen Plan- und Kartenwerke; J. Bolliger 1967 | EPSG | POSC | epicentre 2.1 | current |
Nord Sahara 1959 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Remarks: Sometimes incorrectly referred to as Voirol Unifie 1960. Voirol Unifie 1960 is NOT a datum: it is two projected coordinate systems based on Nord Sahara 1959. See coordinate system codes 30791 and 30792. | Le System Geodesique Nord-Sahara; IGN Paris | EPSG | POSC | epicentre 2.1 | current |
RT38 | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Stockholm observatory Remarks: Superseded by RT90 adjustment (datum code 6124) | EPSG | POSC | epicentre 2.1 | current | |
Yacare | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Yoff | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
Zanderij | International 1924 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.1 | current | ||
MGI | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Hermannskogel. Latitude: 48 deg 16 min 15.29 sec N; Longitude: 16 deg 17 min 41.06 sec E (of Greenwich). | Bundesamt fur Eich- und Vermessungswesen; Wien | EPSG | POSC | epicentre 2.1 | current |
Belge 1972 | International 1924 | EPSG preferred name | Greenwich | Fundamental Point: Uccle observatory. Latitude: 50 deg 47 min 57.704 sec N; Longitude: 4 deg 21 min 24.983 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
DHDN | Bessel 1841 | EPSG preferred name | Greenwich | Fundamental Point: Potsdam. Latitude: 52 deg 22 min 53.954 sec N; Longitude: 13 deg 04 min 01.153 sec E (of Greenwich). | EPSG | POSC | epicentre 2.1 | current | |
Conakry 1905 | Clarke 1880 (IGN) | EPSG preferred name | Greenwich | Fundamental Point: Conakry. Latitude: 10.573766g N; Longitude: 17.833682g W (of Paris). | EPSG | POSC | epicentre 2.1 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Dealul Piscului 1933 | International 1924 | EPSG preferred name | Greenwich | Fundamental point: latitude 44 deg 24 min 33.9606 sec N; longitude 26 deg 06 min 44.8772 sec E (of Greenwich). Remarks: Superseded by 1970 adjustment (datum code 6317) | Institute for Geodesy Photogrametry and Land Management | EPSG | POSC | epicentre 2.2 | current |
Dealul Piscului 1970 | Krassowsky 1940 | EPSG preferred name | Greenwich | Fundamental point: latitude 44 deg 24 min 23.7709 sec N; longitude 26deg 06 min 44.1265 sec E (of Greenwich). Remarks: Supersedes 1933 adjustment (datum code 6316) | Institute for Geodesy Photogrametry and Land Management | EPSG | POSC | epicentre 2.2 | current |
NGN | WGS 84 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.2 | current | ||
KUDAMS | GRS 1980 | EPSG preferred name | Greenwich | EPSG | POSC | epicentre 2.2 | current | ||
WGS 72 | WGS 72 | EPSG preferred name | Greenwich | Remarks: Used by GPS before 1987. For Transit satellite positioning see also WGS 72BE. Datum code 6323 reserved for southern hemisphere ProjCS's. | EPSG | POSC | epicentre 2.1 | current | |
WGS 72BE | WGS 72 | EPSG preferred name | Greenwich | Remarks: Alleged datum for use with Transit broadcast ephemeris prior to 1989. Relationship to WGS 72 has changed over time. Datum code 6325 reserved for southern hemisphere ProjCS's. | EPSG | POSC | epicentre 2.1 | current | |
WGS 84 | WGS 84 | EPSG preferred name | Greenwich | Origin at geocentre. Remarks: Datum code 6327 reserved for southern hemisphere ProjCS's | EPSG | POSC | epicentre 2.1 | current | |
Anguilla 1957 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: station A4. | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
Antigua 1943 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: station A14. | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
Dominica 1945 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: station M12. | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
Grenada 1953 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: station GS8. | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
Montserrat 1958 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: station M36. | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
St. Kitts 1955 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: station K12. | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
St. Lucia 1955 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: station DCS3. | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
St. Vincent 1945 | Clarke 1880 (RGS) | EPSG preferred name | Greenwich | Fundamental point: station V1. | Ordnance Survey of Great Britain. | EPSG | POSC | epicentre 3.0 | current |
NAD27(76) | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental Point: Meade's Ranch. Latitude: 39 deg 13 min 26.686 sec N; Longitude: 98 deg 32 min 30.506 sec W (of Greenwich). Remarks: NAD27(76) used in Ontario for all maps at scale 1/20 000 and larger; elsewhere in Canada for selected purposes. | Geodetic Survey of Canada. | EPSG | POSC | epicentre 3.0 | current |
CGQ77 | Clarke 1866 | EPSG preferred name | Greenwich | Fundamental Point: Meade's Ranch. Latitude: 39 deg 13 min 26.686 sec N; Longitude: 98 deg 32 min 30.506 sec W (of Greenwich). Remarks: NAD27 (CGQ77) used in Quebec for all maps at scale 1/20 000 and larger; generally for maps issued by the Quebec cartography office whose reference system is CGQ77. | Geodetic Service of Quebec. Contact alain.bernard@mrn.gouv.qc.ca | EPSG | POSC | epicentre 3.0 | current |
CH1903 (Bern) | Bessel 1841 | EPSG preferred name | Bern | Fundamental Point: Bern observatory. Latitude: 46 deg 57 min 8.660 sec N; Longitude: 0 | Bundesamt fur Landestopographie | EPSG | POSC | epicentre 3.0 | current |
Bogota (Bogota) | International 1924 | EPSG preferred name | Bogota | Fundamental Point: Bogota observatory. Latitude: 4 deg 35 min 56.570 sec N; Longitude: 0 | EPSG | POSC | epicentre 3.0 | current | |
Lisbon (Lisbon) | International 1924 | EPSG preferred name | Lisbon | Fundamental Point: Castelo Sao Jorge; Lisbon. Latitude: 38 deg 42 min 43.631 sec N; Longitude: 0 | Instituto Geografico e Cadastral; Lisbon | EPSG | POSC | epicentre 3.0 | current |
geodetic_datum | . | ![]() |
identifier | ellipsoid | naming _system | prime _meridian | description | source _reference | source _content | source | version | status |
---|---|---|---|---|---|---|---|---|---|
Makassar (Jakarta) | Bessel 1841 | EPSG preferred name | Jakarta | Fundamental Point: Moncongloe | EPSG | POSC | epicentre 3.0 | current | |
Militar-Geographische Institut (Ferro) | Bessel 1841 | EPSG preferred name | Ferro | Fundamental Point: Hermannskogel. Latitude: 48 deg 16 min 15.29 sec N; Longitude: 0 | Bundesamt fur Eich- und Vermessungswesen; Wien | EPSG | POSC | epicentre 3.0 | current |
Monte Mario (Rome) | International 1924 | EPSG preferred name | Rome | Fundamental Point: Monte Mario. Latitude: 41 deg 55 min 25.510 sec N; Longitude: 0 deg 00 min 00.000 sec E (of Rome). | EPSG | POSC | epicentre 3.0 | current | |
Nouvelle Triangulation Francaise (Paris) | Clarke 1880 (IGN) | EPSG preferred name | Paris | Fundamental Point: Pantheon | EPSG | POSC | epicentre 3.0 | current | |
Padang 1884 (Jakarta) | Bessel 1841 | EPSG preferred name | Jakarta | Fundamental Point: Padang | EPSG | POSC | epicentre 3.0 | current | |
Reseau National Belge 1950 (Brussels) | International 1924 | EPSG preferred name | Brussels | Fundamental Point: Lommel (tower). Latitude: 51 deg 13 min 47.334 sec N; Longitude: 0 deg 56 min 44.773 sec E (of Brussels). | EPSG | POSC | epicentre 3.0 | current | |
Tananarive 1925 (Paris) | International 1924 | EPSG preferred name | Paris | Fundamental Point: Tananarive observatory. Latitude: 18 deg 55 min 2.100 sec S; Longitude: 0 | EPSG | POSC | epicentre 3.0 | current | |
Voirol 1875 (Paris) | Clarke 1880 (IGN) | EPSG preferred name | Paris | Fundamental Point: Voirol. Latitude: 40.835864 grads N; Longitude: 0.788735 grads E of Paris. | IGN Paris | EPSG | POSC | epicentre 3.0 | current |
Batavia (Jakarta) | Bessel 1841 | EPSG preferred name | Jakarta | Fundamental Point: Batavia Astro. Station. Latitude: 6 deg 7 min 39.520 sec S; Longitude: 106 deg 48 min 27.790 sec E (of Greenwich). | EPSG | POSC | epicentre 3.0 | current | |
Stockholm 1938 (Stockholm) | Bessel 1841 | EPSG preferred name | Stockholm | Fundamental Point: Stockholm observatory Remarks: Superseded by RT90 adjustment (datum code 6124) | EPSG | POSC | epicentre 3.0 | current | |
Greek (Athens) | Bessel 1841 | EPSG preferred name | Athens | Fundamental point: Athens Observatory; latitude 37 deg 58 min 20.132 sec N; longitude 0 deg E of Athens. Remarks: See geodetic datum alias 6404. Used as basis of topographic mapping based on Hatt projection. | Topography Department; National Technical University of Athens | EPSG | POSC | epicentre 3.0 | current |
Carthage (Paris) | Clarke 1880 (IGN) | EPSG preferred name | Paris | EPSG | POSC | epicentre 3.0 | current | ||
NGO 1948 (Oslo) | Bessel Modified | EPSG preferred name | Oslo | EPSG | POSC | epicentre 3.0 | current | ||
S-JTSK (Ferro) | Bessel 1841 | EPSG preferred name | Ferro | Modification of Austrian MGI (Ferro) datum. | Research Institute for Geodesy Topography and Cartography (VUGTK); Prague. | EPSG | POSC | epicentre 3.0 | current |
Nord Sahara 1959 (Paris) | Clarke 1880 (RGS) | EPSG preferred name | Paris | Remarks: Conformal transformation from adjustment in ED50 terms. | Le System Geodesique Nord-Sahara; IGN Paris | EPSG | POSC | epicentre 3.0 | current |
ATF (Paris) | Plessis 1817 | EPSG preferred name | Paris | EPSG | POSC | epicentre 3.0 | current | ||
NDG (Paris) | Plessis 1817 | EPSG preferred name | Paris | EPSG | POSC | epicentre 3.0 | current | ||
Madrid 1870 (Madrid) | Struve 1860 | EPSG preferred name | Madrid | Fundamental point: Madrid observatory. | Institut de Geomatica; Barcelona | EPSG | POSC | epicentre 3.0 | current |