Mars - Mariner 9

Mars' north polar cap

Mariner 9 image of the north polar cap of Mars. The image was taken on 12 October 1972, about one-half Martian month after summer solstice, at which time the cap had reached its minimal extent. The cap is about 1000 km across. The interior dark markings are frost-free sun-facing slopes. A smooth layered sedimentary deposit underlies the cap. The image is centered at 89 N, 200 W. (Mariner 9, MTVS 4297-47)
Larger image: 385K

High resolution tiff file (1.0M)

Location & Time Information
Date/Time (UT): 1972-10-12 T 20:52:51
Distance/Range (km): 9074
Central Latitude/Longitude (deg): +89.,200.
Orbit(s): 668

Imaging Information
Area or Feature Type: pole, polar, cap
Instrument: 2-inch Vidicon Television Narrow Angle A-camera
Instrument Resolution (pixels): 700 x 832, 9 bit
Instrument Field of View (deg): 10.50 x 13.56
Filter: polarizing
Illumination Incidence Angle (deg): N/A
Phase Angle (deg): 30.66
Instrument Look Direction: 35.47
Surface Emission Angle (deg): N/A

Ordering Information
CD-ROM Volume: N/A
NASA Image ID number: MTVS 4297-47
Other Image ID number: N/A
NSSDC Data Set ID (Photo): 71-051A-04A
NSSDC Data Set ID (CD): N/A
Other ID: N/A


[NASA Logo] Authors/Curators:

Dave Williams,, (301) 286-1258
Code 690.1, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

Jay Friedlander,, (301) 286-7172
Code 612.4, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

NASA Official: Dr. David R. Williams,

Last updated: 24 September 2015