Photometric Studies of Phobos, Deimos, and the Satellites of Saturn.
Abstract
The Mariner 9 camera system is used to make large phase angle polarimetric and photometric measurements of Phobos and Deimos at effective wavelength of 0.56 microns. The photometric analysis includes effects caused by the irregular shapes of the satellites. The average reflectance of Deimos/Phobos is 1.15 + or - 0.010 mag/deg. Six-color photometric observations made during Saturn's 1972/73 opposition are used to separate the solar phase and orbital phase contributions to the observed light variations of Lapetus, Titan, Rhea, Dione, and Tethys. Titan shows no orbital variations, but has phase coefficients which range from negligible values in the infrared to 0.014 mag/deg in the ultraviolet.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- February 1975
- Bibcode:
- 1975PhDT.........3N
- Keywords:
-
- Physics: Astronomy and Astrophysics;
- Deimos;
- Phobos;
- Photometry;
- Saturn (Planet);
- Iapetus;
- Mariner 9 Space Probe;
- Reflectance;
- Titan;
- Astronomy