Phobos--close Encounter Imaging from the Viking Orbiters

• Author(s): Thomas C. Duxbury, John D. Callahan, Adriana C. Ocampo,
• Publisher: National Aeronautics and Space Administration, Scientific and Technical Information Branch
• Pages: 51
• Language: en

Description:... The shape and orbital characteristics of Phobos, the larger and innermost of Mars' two irregular moons, are discussed and illustrated. Also presented are the high resolution pictures of Phobos that were obtained during the close flybys of Viking Orbiters 1 and 2. The viewing geometry is also given for each picture.