OBSERVATIONS OF MARS AND ITS SATELLITES BY THE MARS IMAGING CAMERA (MIC) ON PLANET-B

We present the specifications of the Mars Imaging Camera (MIC) on the Planet-B spin-stabilized spacecraft, and key scientific objectives of MIC observations. A non-sun-synchronous orbit of Planet-B with a large eccentricity of about 0.87 around Mars provides the opportunities (1) to observe the same region of Mars at various times of day and variou s solar phase angles with spatial resolution of about 60 m from a dist ance of 150 km altitude (at periapsis), and (2) to monitor changes of global atmospheric conditions on Mars near an apoapsis of 15 Mars radi i. In addition, (3) several encounters of Planet-B with each of the tw o Martian satellites are scheduled during the mission lifetime of two years from October 1999 to observe their shapes and surface structures with three color filters, centered on 450, 550, and 650 nm. (4) A sea rch for hypothetical dust rings along the orbits of two satellites wil l be tried from the forward-scattering region of sunlight.