The 1980 radar observations of Venus at 39-cm wavelength

Details The 1980 radar observations of Venus at 39-cm wavelength The 1980 radar observations of Venus at 39-cm wavelength

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982azh....59..625k&link_type=abstract

(Astronomicheskii Zhurnal, vol. 59, July-Aug. 1982, p. 625-630) Soviet Astronomy (ISSN 0038-5301), vol. 26, July-Aug. 1982, p. 3

Astronomy and Astrophysics

Astronomy

Radar Astronomy, Venus Radar Echoes, Distance, Topography, Velocity Measurement, Venus Surface

Scientific paper

During the period 1980 February 15-April 15 a new, fully steerable, 70-m paraboloid was used for Venus radar observations (range, 161-94 million km). The distance and velocity of the planet was measured, as well as surface height profiles in the 70-230 longitude interval, corresponding to a range of 1.0-3.7 deg S in the latitude of the subradar point. The measured distance deviates by no more than 6 km from that predicted by a new numerical theory of planetary motion; the rms errors of measurement amount to 0.3-1.5 km. On the part of the Venus surface investigated there are two mountainous regions separated by extensive hilly plains. The first region rises to 4.5 km elevation near 90 deg longitude; the second, to 2.5 km at 195 deg longitude. The two regions measure about 4000 and 2500 km across, respectively.

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