PIA22056: Martian Moon Phobos Observed by NASA's Odyssey

Martian Moon Phobos Observed by NASA’s Odyssey


This image of Phobos is one product of the first pointing at that Martian moon by the Thermal Emission Imaging System (THEMIS) camera on NASA's Mars Odyssey orbiter. The Sept. 29, 2017, observation also provided information about temperatures on different areas of Phobos.

Researchers have been using THEMIS to examine Mars since early 2002, but the maneuver turning the orbiter around to point the camera at Phobos was developed only recently.

Phobos has an oblong shape with average diameter of about 14 miles (22 kilometers). Odyssey orbits Mars at an altitude of about 250 miles (400 kilometers), much closer to the planet than to Phobos, which orbits about 3,700 miles (6,000 kilometers) above the surface of Mars. The distance to Phobos from Odyssey during this observation was about 3,424 miles (5,511 kilometers).

Background Info:

THEMIS was developed by and is operated by a team based at Arizona State University, Tempe. NASA's Jet Propulsion Laboratory, Pasadena, California, manages the Mars Odyssey mission for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, built the orbiter and partners in its operation. JPL is a division of Caltech in Pasadena.

Cataloging Keywords:

Name Value Additional Values
Target Phobos Mars
System Mars
Target Type Satellite Planet
Mission 2001 Mars Odyssey
Instrument Host 2001 Mars Odyssey
Host Type Orbiter
Instrument Thermal Emission Imaging System (THEMIS)
Extra Keywords Grayscale
Acquisition Date
Release Date 2017-10-04
Date in Caption
Image Credit NASA/JPL-Caltech/ASU/SSI
Source photojournal.jpl.nasa.gov/catalog/PIA22056
Identifier PIA22056