Venus - Density of upper atmosphere from measurements of drag on Pioneer orbiter

Details Venus - Density of upper atmosphere from measurements of drag on Pioneer orbiter Venus - Density of upper atmosphere from measurements of drag on Pioneer orbiter

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979sci...203..775s&link_type=abstract

Science, vol. 203, Feb. 23, 1979, p. 775-777.

Physics

2

Atmospheric Density, Satellite Drag, Upper Atmosphere, Venus Atmosphere, Daytime, Density Distribution, Night Sky, Periodic Variations, Pioneer Venus 1 Spacecraft, Vertical Distribution, Pioneer Venus, Venus, Density, Atmosphere, Altitudes, Terminators

Scientific paper

Measurements of the changes in orbital period of the Pioneer Venus orbiter are used to estimate the density of the upper atmosphere of Venus at altitudes in the range from 150 to 200 km. At 150 km, the dayside mean density is 1.4 times 10 to the -13th g/cc and the nightside mean density is 4 times 10 to the -14th g/cc. The oscillatory patterns of density variation are described. The data for densities between 150 and 200 km on the dayside are sketchy but the data imply a scale height between 15 and 20 km.

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