Mars Global Surveyor
Mars Orbiter Camera

Knob in Propontis

MGS MOC Release No. MOC2-652, 1 March 2004

NASA/JPL/Malin Space Science Systems

This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a rounded hill, or knob, in the Propontis region of Mars near 43.7°N, 189.1°W. This knob is a remnant of a former terrain, perhaps the remains of an old crater rim, or eroded upland. Dark specks on its surface may be large boulders. Old impact craters are seen in the lower third (southern third) of the image. The picture covers an area 3 km (1.9 mi) wide; sunlight illuminates the scene from the lower left.

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Malin Space Science Systems and the California Institute of Technology built the MOC using spare hardware from the Mars Observer mission. MSSS operates the camera from its facilities in San Diego, California. The Jet Propulsion Laboratory's Mars Surveyor Operations Project operates the Mars Global Surveyor spacecraft with its industrial partner, Lockheed Martin Astronautics, from facilities in Pasadena, California and Denver, Colorado.

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