concentration of dense mass beneath the moon's surface
a region of excess gravitational attraction on the surface of the Moon. The word is a contraction of mass concentration.[1 related articles]
Topography (top) and surface gravity (bottom) for Mare Serenitatis. The gravity shows a plateau and thus a substantial near-surface contribution to the mascon. Also apparent is the smaller mascon Mare Vaporum in the lower left and center part of the figure. Data from Lunar Prospector A region on ...
A concentration of mass in a local area beneath a lunar mare. The term is derived from mass concentration.
A region in the crust of a celestial body which is denser than average and as such acts to create a local gravitational anomaly. On the moon, there are several basins which demonstrate these properties.