POSC Specifications
Version 3.0
Epicentre Standard Values
geodetic_datum

geodetic_datum

Standard Instance Values

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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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