Geographic 3D CRS Details
|
Name: | St. Helena Tritan |
Code: | 7880 |
CRS Type: | geographic 3D |
Area Of Use: |
St Helena - St Helena Island
Area Details
|
Area Name: | St Helena - St Helena Island |
Area Code: | 3183 |
Description: | St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore. |
Extents: |
|
-15.85 ° |
|
-5.85 ° |
|
-5.58 ° |
|
-16.08 ° |
|
|
Meta Data |
Information Source: | OGP |
Data Source: | OGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2008.070] [2011.015] [2012.023] [2014.017] |
|
Datum: |
St. Helena Tritan
Datum Details
|
Datum Name: | St. Helena Tritan |
Code: | 1173 |
Area Of Use: |
St Helena - St Helena Island
Area Details
|
Area Name: | St Helena - St Helena Island |
Area Code: | 3183 |
Description: | St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore. |
Extents: |
|
-15.85 ° |
|
-5.85 ° |
|
-5.58 ° |
|
-16.08 ° |
|
|
Meta Data |
Information Source: | OGP |
Data Source: | OGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2008.070] [2011.015] [2012.023] [2014.017] |
|
Scope: | Engineering surveys including Airport and Ruperts Wharf construction. |
Type: | geodetic |
Realization Epoch: | 2011-10-09 |
Origin: | WGS 84 at epoch 2011.773. WGS 84 coordinates (15°56'33.1217"S, 5°40'02.4436"W, 453.288m ellipsoid height) of Longwood IGS CORS station STHL on 9th October 2011 |
Ellipsoid: | WGS 84
Ellipsoid Details |
Name: | WGS 84 |
Code: | 7030 |
Shape: | Ellipsoid |
Semi-Major Axis: |
6378137 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 25, 2021 |
Change Id: |
[2015.062] |
|
Inverse Flattening: | 298.257223563 |
Meta Data |
Remarks: | 1/f derived from four defining parameters semi-major axis; C20 = -484.16685*10e-6; earth's angular velocity ? = 7292115e-11 rad/sec; gravitational constant GM = 3986005e8 m*m*m/s/s. In 1994 new GM = 3986004.418e8 m*m*m/s/s but a and 1/f retained. |
Information Source: | DMA Technical Manual 8350.2-B |
Data Source: | IOGP |
Revision Date: | January 25, 2021 |
Change Id: |
[1998.320] [2015.047] |
|
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 25, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | = pi/180 radians |
Information Source: | |
Data Source: | IOGP |
Revision Date: | January 25, 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 25, 2021 |
Change Id: |
[1996.290] [2016.045] |
|
Applicable CRS-s: |
The following CRS are based on this datum:
[St. Helena Tritan] [St. Helena Tritan] [St. Helena Tritan] |
Meta Data |
Information Source: | St. Helena Government, Environment and Natural Resources Directorate (ENRD). |
Data Source: | IOGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2016.038] |
|
Coordinate System: | Ellipsoidal 3D CS. Axes: latitude, longitude, ellipsoidal height. Orientations: north, east, up. UoM: degree, degree, metre.
Coordinate System Details
|
Name: | Ellipsoidal 3D CS. Axes: latitude, longitude, ellipsoidal height. Orientations: north, east, up. UoM: degree, degree, metre. |
Code: | 6423 |
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 25, 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 25, 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 25, 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 25, 2021 |
Change Id: |
[2015.062] |
|
3 |
h |
Ellipsoidal height |
up |
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 25, 2021 |
Change Id: |
[2015.062] |
|
|
Meta Data |
Remarks: | Horizontal 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. Used in geographic 3D coordinate reference systems. |
Information Source: | OGP |
Data Source: | IOGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2008.045] [2015.018] |
|
Base Geographic CRS: | St. Helena Tritan
Details
|
Name: | St. Helena Tritan |
Code: | 7879 |
CRS Type: | geocentric |
Area Of Use: |
St Helena - St Helena Island
Area Details
|
Area Name: | St Helena - St Helena Island |
Area Code: | 3183 |
Description: | St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore. |
Extents: |
|
-15.85 ° |
|
-5.85 ° |
|
-5.58 ° |
|
-16.08 ° |
|
|
Meta Data |
Information Source: | OGP |
Data Source: | OGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2008.070] [2011.015] [2012.023] [2014.017] |
|
Datum: |
St. Helena Tritan
Datum Details
|
Datum Name: | St. Helena Tritan |
Code: | 1173 |
Area Of Use: |
St Helena - St Helena Island
Area Details
|
Area Name: | St Helena - St Helena Island |
Area Code: | 3183 |
Description: | St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore. |
Extents: |
|
-15.85 ° |
|
-5.85 ° |
|
-5.58 ° |
|
-16.08 ° |
|
|
Meta Data |
Information Source: | OGP |
Data Source: | OGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2008.070] [2011.015] [2012.023] [2014.017] |
|
Scope: | Engineering surveys including Airport and Ruperts Wharf construction. |
Type: | geodetic |
Realization Epoch: | 2011-10-09 |
Origin: | WGS 84 at epoch 2011.773. WGS 84 coordinates (15°56'33.1217"S, 5°40'02.4436"W, 453.288m ellipsoid height) of Longwood IGS CORS station STHL on 9th October 2011 |
Ellipsoid: | WGS 84
Ellipsoid Details |
Name: | WGS 84 |
Code: | 7030 |
Shape: | Ellipsoid |
Semi-Major Axis: |
6378137 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 25, 2021 |
Change Id: |
[2015.062] |
|
Inverse Flattening: | 298.257223563 |
Meta Data |
Remarks: | 1/f derived from four defining parameters semi-major axis; C20 = -484.16685*10e-6; earth's angular velocity ? = 7292115e-11 rad/sec; gravitational constant GM = 3986005e8 m*m*m/s/s. In 1994 new GM = 3986004.418e8 m*m*m/s/s but a and 1/f retained. |
Information Source: | DMA Technical Manual 8350.2-B |
Data Source: | IOGP |
Revision Date: | January 25, 2021 |
Change Id: |
[1998.320] [2015.047] |
|
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 25, 2021 |
Change Id: |
[2015.062] |
|
Meta Data |
Remarks: | = pi/180 radians |
Information Source: | |
Data Source: | IOGP |
Revision Date: | January 25, 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 25, 2021 |
Change Id: |
[1996.290] [2016.045] |
|
Applicable CRS-s: |
The following CRS are based on this datum:
[St. Helena Tritan] [St. Helena Tritan] [St. Helena Tritan] |
Meta Data |
Information Source: | St. Helena Government, Environment and Natural Resources Directorate (ENRD). |
Data Source: | IOGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2016.038] |
|
Coordinate System: | Earth centred, earth fixed, righthanded 3D coordinate system, consisting of 3 orthogonal axes with X and Y axes in the equatorial plane, positive Z-axis parallel to mean earth rotation axis and pointing towards North Pole. UoM: m.
Coordinate System Details
|
Name: | Earth centred, earth fixed, righthanded 3D coordinate system, consisting of 3 orthogonal axes with X and Y axes in the equatorial plane, positive Z-axis parallel to mean earth rotation axis and pointing towards North Pole. UoM: m. |
Code: | 6500 |
Axes: |
Order |
Name |
Abreviation |
Direction |
Unit |
1 |
X |
Geocentric X |
Geocentre > equator/0°E |
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 25, 2021 |
Change Id: |
[2015.062] |
|
2 |
Y |
Geocentric Y |
Geocentre > equator/90°E |
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 25, 2021 |
Change Id: |
[2015.062] |
|
3 |
Z |
Geocentric Z |
Geocentre > north pole |
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 25, 2021 |
Change Id: |
[2015.062] |
|
|
Meta Data |
Remarks: | Cartesian 3D CS, used in geocentric coordinate reference systems. |
Information Source: | OGP |
Data Source: | OGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2008.045] |
|
Meta Data |
Remarks: | Replaced by SHGD2015 (CRS code 7884) from 2015. |
Information Source: | St. Helena Government, Environment and Natural Resources Directorate (ENRD). |
Data Source: | IOGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2016.038] |
|
Projection: | geocentric to geographic3D
|
Meta Data |
Remarks: | Closely aligned to SHGD2015 (CRS code 7885) with difference attributable to different reference epoch and 10 cm difference in ellipsoid height. Replaced by SHGD2015 from 2015. |
Information Source: | St. Helena Government, Environment and Natural Resources Directorate (ENRD). |
Data Source: | IOGP |
Revision Date: | January 25, 2021 |
Change Id: |
[2016.038] |
Alias: |
Alias |
Naming System |
Remarks |
WGS 84 Tritan St. Helena |
EPSG alias |
|
|