Phobos - Viking 2 Orbiter

Martian moon Phobos over Ascraeus Mons

Phobos
Viking 2 Orbiter image of Phobos orbiting over Ascraeus Mons on Mars. Phobos is about 8000 km below the spacecraft and 22 km across. Ascraeus Mons is 13,000 km away and about 300 km at its base, centered at 11 N, 104 W. North is at 11:30, and Phobos is moving from left to right relative to the surface. (Viking Orbiter 304B88)
Larger image:

High resolution tiff file (1.0 Mb)

Location & Time Information
Date/Time (UT): 1977-06-23 T 11:17:04
Distance/Range (km): 8000 km
Central Latitude/Longitude (deg): N/A
Orbit(s): 304

Imaging Information
Area or Feature Type: global; view, volcano
Instrument: Visual Imaging Subsystem - Camera B
Instrument Resolution (pixels): 1056 x 1182, 7 bit
Instrument Field of View (deg): 1.54 x 1.69
Filter: clear (4)
Illumination Incidence Angle (deg): N/A
Phase Angle (deg): N/A
Instrument Look Direction: N/A
Surface Emission Angle (deg): N/A

Ordering Information
CD-ROM Volume: VO_1056
NASA Image ID number: 304B88
Other Image ID number: 52653629
NSSDC Data Set ID (Photo): 75-083A-01F
NSSDC Data Set ID (CD): 75-083A-01a
Other ID: N/A

Updated 23 May 2003, DRW.