PHOBOS and Deimos encounter experiment during the Viking extended mission

Details PHOBOS and Deimos encounter experiment during the Viking extended mission PHOBOS and Deimos encounter experiment during the Viking extended mission

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975aiaa.meetq....t&link_type=abstract

American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting, 13th, Pasadena, Calif., Jan. 20-22, 1975, 9 p.

Astronomy and Astrophysics

Astronomy

Deimos, Phobos, Space Exploration, Viking Orbiter 1975, Encounters, Error Analysis, Feasibility Analysis, Geometry, Natural Satellites, Orbital Elements, Spaceborne Astronomy, Spaceborne Photography, Spacecraft Maneuvers, Viking Mars Program

Scientific paper

The Viking '75 Mission to Mars permits a truly unique opportunity to explore the natural satellites, Phobos and Deimos, from distances measured in the tens of kilometers. Because of the particular orbital geometry currently planned for the Viking Mission, the Viking spacecraft can be maneuvered to make repeated passes very close to Phobos and Deimos during the proposed extended mission phase. Multipass images of both satellites will cover approximately 75% of Phobos and 50% of Deimos. Resolution on the order of 50 meters is possible. Close encounters will permit mass determination to an accuracy of tens of percent. A preliminary feasibility study has been made which shows that the propulsive requirements are nominal, the orbit determination accuracy is adequate, and the satellites are within the scan platform pointing capability during portions of each encounter.

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