title: Lunar Gravity via Apollo 14 Doppler Radio Tracking.
abstract: 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.
authors.forename: W L
authors.initials: WL
authors.lastname: Sjogren
authors.forename: P
authors.initials: P
authors.lastname: Gottlieb
authors.forename: P M
authors.initials: PM
authors.lastname: Muller
authors.forename: W
authors.initials: W
authors.lastname: Wollenhaupt