Lunar Gravity via Apollo 14 Doppler Radio Tracking

Details Lunar Gravity via Apollo 14 Doppler Radio Tracking Lunar Gravity via Apollo 14 Doppler Radio Tracking

Jan 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972sci...175..165s&link_type=abstract

Science, Volume 175, Issue 4018, pp. 165-168

Physics

20

Scientific paper

Gravity measurements at high resolution were obtained over a 100-kilometer band from + 70 degrees to - 70 degrees of longitude during the orbits of low periapsis altitude (approximately 16 kilometers). The line-of-sight accelerations are plotted on Aeronautical Chart and Information Center mercator charts (scale 1: 1,000,000) as contours at 10-milligal intervals. Direct correlations between gravity variations and surface features are easily determined. Theophilus, Hipparchus, and Ptolemaeus are negative features, whereas Mare Nectaris is a large positive region. The acceleration profiles over Mare Nectaris are suggestive of a broad disk near the surface rather than a deeply buried spherical body. These data are in good agreement with the short arc of Apollo 12 lunar module descent data.

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