An astrogeodetic world datum from geoidal heights based on the flatteningf= 1/298.3

The value 1/298.3 for the flattening of the earth is accepted in the determination of a world ellipsoid. The astrogeodetic geoid is extended into the Caribbean, India, and Burma, and modified in the Soviet Union and the Far East. The resulting world ellipsoid is very small, with an equatorial radius of about 6,378,160 meters. The agreement between astrogeodetic and gravimetric geoid profiles is greatly improved by the small ellipsoid.