GEOS - Geostationary Satellite View

Name Geostationary Satellite View
Alias GEOS
Alias Normalized Geostationary Projection
EPSG Code (none)
GeoTIFF Code
Supported By PROJ.4, OGC WKT

Projection Parameters

Name EPSG # GeoTIFF ID OGC WKT Units Notes
Longitude of natural origin 2 NatOriginLong central_meridian Angular
Satellite Height ? ? satellite_height Linear
False Easting 6 FalseEasting false_easting Linear
False Northing 7 FalseNorthing false_northing Linear


Documented in document CGMS 03 (Coordinate Group for Meteorological Satellites - LRIT/HRIT Global Specification). Possibly availble at url The GEOS projection is detailed in section

The document suggests a spheroid with a major axis of 6378169.0m and a semi minor axis of 6356583.8m.

The document describes the satellite height as distance from the satellite to the center of earth, but for various reasons I have chosen to specify it as height above the ellipsoid in the WKT (and in PROJ.4). The document suggests a height of 42164000m which on the suggested ellipsoid translates to 35785831m above the ellipsoid.

PROJ.4 Organization

  +proj=geos  +lon_0=Central Meridian
              +h=Satellite Height
              +x_0=False Easting
              +y_0=False Northing