Projected CRS Details
|
Name: | Accra / Ghana National Grid |
Code: | 2136 |
CRS Type: | projected |
Area Of Use: |
Ghana - onshore
Area Details
|
Area Name: | Ghana - onshore |
Area Code: | 3252 |
Description: | Ghana - onshore. |
Extents: |
|
11.16 ° |
|
-3.25 ° |
|
1.23 ° |
|
4.67 ° |
|
|
Meta Data |
Information Source: | OGP |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2012.049] [2014.016] |
|
Coordinate System: | Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: ftGC.
Coordinate System Details
|
Name: | Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: ftGC. |
Code: | 4404 |
Axes: |
Order |
Name |
Abreviation |
Direction |
Unit |
1 |
E |
Easting |
east |
Gold Coast foot
Unit Details
|
Unit Name: | Gold Coast foot |
Unit Code: | 9094 |
Type: | length |
Target Unit: | metre
Unit Details
|
Unit Name: | metre |
Unit Code: | 9001 |
Type: | length |
Target Unit: | metre |
Meta Data |
Remarks: | Also known as International metre. SI standard unit. |
Information Source: | ISO 1000. |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | Used in Ghana and some adjacent parts of British west Africa prior to metrication, except for the metrication of projection defining parameters when British foot (Sears 1922) used. |
Information Source: | Ordnance Survey International |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2000.861] [2015.062] |
|
2 |
N |
Northing |
north |
Gold Coast foot
Unit Details
|
Unit Name: | Gold Coast foot |
Unit Code: | 9094 |
Type: | length |
Target Unit: | metre
Unit Details
|
Unit Name: | metre |
Unit Code: | 9001 |
Type: | length |
Target Unit: | metre |
Meta Data |
Remarks: | Also known as International metre. SI standard unit. |
Information Source: | ISO 1000. |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | Used in Ghana and some adjacent parts of British west Africa prior to metrication, except for the metrication of projection defining parameters when British foot (Sears 1922) used. |
Information Source: | Ordnance Survey International |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2000.861] [2015.062] |
|
|
Meta Data |
Remarks: | Used in projected and engineering coordinate reference systems. |
Information Source: | OGP |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
|
Base Geographic CRS: | Accra
Details
|
Name: | Accra |
Code: | 4168 |
CRS Type: | geographic 2D |
Area Of Use: |
Ghana
Area Details
|
Area Name: | Ghana |
Area Code: | 1104 |
Description: | Ghana - onshore and offshore. |
Extents: |
|
11.16 ° |
|
-3.79 ° |
|
2.1 ° |
|
1.4 ° |
|
|
Meta Data |
Information Source: | ISO 3166 Maintenance Agency. ftp://ftp.fu-berlin.de/pub/doc/iso |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2002.341] [2005.890] [2012.049] |
|
Datum: |
Accra
Datum Details
|
Datum Name: | Accra |
Code: | 6168 |
Area Of Use: |
Ghana
Area Details
|
Area Name: | Ghana |
Area Code: | 1104 |
Description: | Ghana - onshore and offshore. |
Extents: |
|
11.16 ° |
|
-3.79 ° |
|
2.1 ° |
|
1.4 ° |
|
|
Meta Data |
Information Source: | ISO 3166 Maintenance Agency. ftp://ftp.fu-berlin.de/pub/doc/iso |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2002.341] [2005.890] [2012.049] |
|
Scope: | Topographic mapping. |
Type: | geodetic |
Realization Epoch: | |
Origin: | Fundamental point: GCS Station 547. Latitude: 5°23'43.3"N, longitude: 0°11'52.3"W (of Greenwich). |
Ellipsoid: | War Office
Ellipsoid Details |
Name: | War Office |
Code: | 7029 |
Shape: | Ellipsoid |
Semi-Major Axis: |
6378300 metre
Unit Details
|
Unit Name: | metre |
Unit Code: | 9001 |
Type: | length |
Target Unit: | metre |
Meta Data |
Remarks: | Also known as International metre. SI standard unit. |
Information Source: | ISO 1000. |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Inverse Flattening: | 296. |
Meta Data |
Remarks: | In non-metric form, a=20926201 Gold Coast feet. DMA Technical Manual 8358.1 and data derived from this quotes value for semi-major axis as 6378300.58m: OGP recommends use of defined value 6378300m exactly. |
Information Source: | Tables for the use of the Gold Coast Survey Department, 1935. |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2009.075] |
|
Prime Meridian: | Greenwich
Prime Meridian Details
|
Name: | Greenwich |
Code: | 8901 |
Greenwich Longitude: |
0
degree
Unit Details
|
Unit Name: | degree |
Unit Code: | 9102 |
Type: | angle |
Target Unit: | radian
Unit Details
|
Unit Name: | radian |
Unit Code: | 9101 |
Type: | angle |
Target Unit: | radian |
Meta Data |
Remarks: | SI standard unit. |
Information Source: | ISO 1000:1992 |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | = pi/180 radians |
Information Source: | |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[1996.220] [2002.860] [2015.062] |
|
Meta Data |
Remarks: | The international reference meridian as defined first by the 1884 International Meridian Conference and later by the Bureau International de l'Heure (BIH) and then the International Earth Rotation Service (IERS). |
Information Source: | OGP |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[1996.290] [2016.045] |
|
Applicable CRS-s: |
The following CRS are based on this datum:
[Accra] |
Meta Data |
Remarks: | Replaced in 1978 by Leigon datum (code 6250). |
Information Source: | Ordnance Survey International |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2008.045] |
|
Coordinate System: | Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree
Coordinate System Details
|
Name: | Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree |
Code: | 6422 |
Axes: |
Order |
Name |
Abreviation |
Direction |
Unit |
1 |
Lat |
Geodetic latitude |
north |
degree (supplier to define representation)
Unit Details
|
Unit Name: | degree (supplier to define representation) |
Unit Code: | 9122 |
Type: | angle |
Target Unit: | radian
Unit Details
|
Unit Name: | radian |
Unit Code: | 9101 |
Type: | angle |
Target Unit: | radian |
Meta Data |
Remarks: | SI standard unit. |
Information Source: | ISO 1000:1992 |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | = pi/180 radians. The degree representation (e.g. decimal, DMSH, etc.) must be clarified by suppliers of data associated with this code. |
Information Source: | OGP |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
2 |
Lon |
Geodetic longitude |
east |
degree (supplier to define representation)
Unit Details
|
Unit Name: | degree (supplier to define representation) |
Unit Code: | 9122 |
Type: | angle |
Target Unit: | radian
Unit Details
|
Unit Name: | radian |
Unit Code: | 9101 |
Type: | angle |
Target Unit: | radian |
Meta Data |
Remarks: | SI standard unit. |
Information Source: | ISO 1000:1992 |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | = pi/180 radians. The degree representation (e.g. decimal, DMSH, etc.) must be clarified by suppliers of data associated with this code. |
Information Source: | OGP |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
|
Meta Data |
Remarks: | Coordinates referenced to this CS are in degrees. Any degree representation (e.g. DMSH, decimal, etc.) may be used but that used must be declared for the user by the supplier of data. Used in geographic 2D coordinate reference systems. |
Information Source: | OGP |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2008.045] [2015.018] |
|
Meta Data |
Remarks: | Ellipsoid semi-major axis (a)=20926201 exactly Gold Coast feet. Replaced by Leigon (code 4250) in 1978. |
Information Source: | Ordnance Survey International |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2003.370] |
|
Projection: | Ghana National Grid
Projection Details
|
Name: | Ghana National Grid |
Code: | 19959 |
Area Of Use: |
Ghana
Area Details
|
Area Name: | Ghana |
Area Code: | 1104 |
Description: | Ghana - onshore and offshore. |
Extents: |
|
11.16 ° |
|
-3.79 ° |
|
2.1 ° |
|
1.4 ° |
|
|
Meta Data |
Information Source: | ISO 3166 Maintenance Agency. ftp://ftp.fu-berlin.de/pub/doc/iso |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2002.341] [2005.890] [2012.049] |
|
Conversion method: |
Transverse Mercator
Operation Method Details
|
Name: | Transverse Mercator |
Code: | 9807 |
Reversable: | YES |
Method Parameters: |
Parameter |
Sign Reversable |
Latitude of natural origin |
YES |
Longitude of natural origin |
YES |
Scale factor at natural origin |
YES |
False easting |
YES |
False northing |
YES |
|
Example: |
|
Formula: |
|
Meta Data |
Information Source: | EPSG guidance note #7-2, http://www.epsg.org |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2004.680] [2007.029] [2011.098] |
|
Conversion Parameters: |
Parameter |
Value |
Reversable |
Unit |
Latitude of natural origin |
04° 40' 00.000" N |
YES |
sexagesimal DMS
Unit Details
|
Unit Name: | sexagesimal DMS |
Unit Code: | 9110 |
Type: | angle |
Target Unit: | degree
Unit Details
|
Unit Name: | degree |
Unit Code: | 9102 |
Type: | angle |
Target Unit: | radian
Unit Details
|
Unit Name: | radian |
Unit Code: | 9101 |
Type: | angle |
Target Unit: | radian |
Meta Data |
Remarks: | SI standard unit. |
Information Source: | ISO 1000:1992 |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | = pi/180 radians |
Information Source: | |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[1996.220] [2002.860] [2015.062] |
|
Meta Data |
Remarks: | Pseudo unit. Format: signed degrees - period - minutes (2 digits) - integer seconds (2 digits) - fraction of seconds (any precision). Must include leading zero in minutes and seconds and exclude decimal point for seconds. Convert to deg using algorithm. |
Information Source: | OGP |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2002.270] [2002.780] [2008.020] [2015.062] [2016.047] |
|
Longitude of natural origin |
01° 00' 00.000" W |
YES |
sexagesimal DMS
Unit Details
|
Unit Name: | sexagesimal DMS |
Unit Code: | 9110 |
Type: | angle |
Target Unit: | degree
Unit Details
|
Unit Name: | degree |
Unit Code: | 9102 |
Type: | angle |
Target Unit: | radian
Unit Details
|
Unit Name: | radian |
Unit Code: | 9101 |
Type: | angle |
Target Unit: | radian |
Meta Data |
Remarks: | SI standard unit. |
Information Source: | ISO 1000:1992 |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | = pi/180 radians |
Information Source: | |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[1996.220] [2002.860] [2015.062] |
|
Meta Data |
Remarks: | Pseudo unit. Format: signed degrees - period - minutes (2 digits) - integer seconds (2 digits) - fraction of seconds (any precision). Must include leading zero in minutes and seconds and exclude decimal point for seconds. Convert to deg using algorithm. |
Information Source: | OGP |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2002.270] [2002.780] [2008.020] [2015.062] [2016.047] |
|
Scale factor at natural origin |
0.99975 |
YES |
unity
Unit Details
|
Unit Name: | unity |
Unit Code: | 9201 |
Type: | scale |
Target Unit: | unity |
Meta Data |
Information Source: | |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
False easting |
900000 |
YES |
Gold Coast foot
Unit Details
|
Unit Name: | Gold Coast foot |
Unit Code: | 9094 |
Type: | length |
Target Unit: | metre
Unit Details
|
Unit Name: | metre |
Unit Code: | 9001 |
Type: | length |
Target Unit: | metre |
Meta Data |
Remarks: | Also known as International metre. SI standard unit. |
Information Source: | ISO 1000. |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | Used in Ghana and some adjacent parts of British west Africa prior to metrication, except for the metrication of projection defining parameters when British foot (Sears 1922) used. |
Information Source: | Ordnance Survey International |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2000.861] [2015.062] |
|
False northing |
0 |
YES |
Gold Coast foot
Unit Details
|
Unit Name: | Gold Coast foot |
Unit Code: | 9094 |
Type: | length |
Target Unit: | metre
Unit Details
|
Unit Name: | metre |
Unit Code: | 9001 |
Type: | length |
Target Unit: | metre |
Meta Data |
Remarks: | Also known as International metre. SI standard unit. |
Information Source: | ISO 1000. |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | Used in Ghana and some adjacent parts of British west Africa prior to metrication, except for the metrication of projection defining parameters when British foot (Sears 1922) used. |
Information Source: | Ordnance Survey International |
Data Source: | IOGP |
Revision Date: | January 21, 2021 |
Change Id: |
[2000.861] [2015.062] |
|
|
Scope: |
Large and medium scale topographic mapping and engineering survey. |
Applicable CRS-s: |
The following CRS are based on this projection:
[Accra / Ghana National Grid] |
Meta Data |
Remarks: | Replaced by Ghana metric grid (code 19904). |
Information Source: | Ordnance Survey International |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
|
Meta Data |
Remarks: | Ellipsoid semi-major axis (a)=20926201 Gold Coast feet. ProjCRS sometimes found in metric form: 1 Gold Coast foot = 0.3047997101815 m.Replaced by Leigon / Ghana Metric Grid from 1978. |
Information Source: | Ordnance Survey International |
Data Source: | OGP |
Revision Date: | January 21, 2021 |
Alias: |
Alias |
Naming System |
Remarks |
Accra / Gold Coast Grid |
EPSG alias |
|
Accra / Ghana Nat. Grid |
EPSG abbreviation |
|
Accra_Ghana_Grid |
ESRI |
|
|