PIA04746: Boulders on Phobos


Boulders on Phobos

Caption:

MGS MOC Release No. MOC2-485, 16 September 2003

In 1998, the Mars Global Surveyor (MGS) spacecraft made four passes by the innermost of the two martian satellites, Phobos. The fourth pass, made just over 5 years ago on 12 September 1998, offered the Mars Orbiter Camera (MOC) the opportunity to acquire the highest resolution images of the moon, ever. This wonderful 5-year-old picture highlights the surface of Phobos. Several large boulders can be seen, including a very large one near the center that is about 85 meters (~280 feet) in diameter. Most of the boulders may have been ejected from the largest impact crater on Phobos, Stickney. Sunlight illuminates the scene from the left/lower left.

Cataloging Keywords:

Name Value Additional Values
Target Mars Phobos
System Mars
Target Type Planet Satellite
Mission Mars Global Surveyor (MGS)
Instrument Host Mars Global Surveyor
Host Type Orbiter
Instrument Mars Orbiter Camera (MOC)
Detector
Extra Keywords Crater, Grayscale, Impact
Acquisition Date
Release Date 2003-09-17
Date in Caption 1998-09-12 2003-09-16
Image Credit NASA/JPL/Malin Space Science Systems
Source photojournal.jpl.nasa.gov/catalog/PIA04746
Identifier PIA04746