An analysis is carried out on the Venusian topography by expanding the topography into spherical harmonics, following the Bills and Kobrick (1985, 1987) harmonic analysis of Venus topography. It is shown that the geometrical shape of Venus is close to a sphere, with the slope of the least axis to the revolution axis being approximately equal to 30 deg. The axis goes through the two main lowlands: Atalanta Planitia in the north and the Laviniya Planitia in the south. The largest axis is located nearly on the equator and joins the highland, Beta Regio in the west and Ovda Regio in the east. The geometrical ellipsoid of Venus does not correlate with the gravimetric figure of the planet, and the flattening of the ellipsoid is eleven times less than that of the earth.
Venus Geology, Geochemistry, and Geophysics - Research results from the USSR
- Pub Date:
- Spherical Harmonics;
- Venus Surface;
- Gravitational Fields;
- Planetary Gravitation;
- Lunar and Planetary Exploration