Phobos and Deimos control networks

Phobos and Deimos control networks

Global control networks of 98 surface features on Phobos and 53 on Deimos were established and measured in Viking Orbiter images of the Martian satellites. Photogrammetric triangulation techniques were used to determine the body-fixed coordinates of the control points and to determine mean tri-axial...

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Veröffentlicht in:Icarus (New York, N.Y. 1962) N.Y. 1962), 1989-02, Vol.77 (2), p.275-286
Hauptverfasser: Duxbury, Thomas C., Callahan, John D.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
Earth, ocean, space
Exact sciences and technology
Lunar And Planetary Exploration
Mars
Planets, their satellites and rings. Asteroids
Solar system
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Beschreibung
Zusammenfassung:Global control networks of 98 surface features on Phobos and 53 on Deimos were established and measured in Viking Orbiter images of the Martian satellites. Photogrammetric triangulation techniques were used to determine the body-fixed coordinates of the control points and to determine mean tri-axial radii of 13.3 × 11.1 × 9.3 km for Phobos and 7.5 × 6.2 × 5.4 km for Deimos. A forced libration amplitude of 0.8 deg was observed. Expressions for the inertial orientations of the spin axes and prime meridians were also determined.
ISSN:0019-1035
1090-2643
DOI:10.1016/0019-1035(89)90090-0