Mars - Viking 2 Orbiter

Viking image of the Inca City feature on Mars

Viking 2 Orbiter image of an area near the south pole of Mars given the name Inca City. This semi-rectangular grid (at center-right) is probably the result of wind deflation of deposits revealing the underlying gridded terrain. The individual square cells are about 4 to 5 km across. An ice deposit can be seen at the upper left of the frame, which is to the south. North is at 4:00. (Viking Orbiter 421B64)
Larger image: 455K

High resolution tiff file (1.0M)

Location & Time Information
Date/Time (UT): 1977-10-13 T 05:58:45
Distance/Range (km): 5850
Central Latitude/Longitude (deg): -81.82,059.59
Orbit(s): 421

Imaging Information
Area or Feature Type: ice, pattern
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: 6 (Red)
Illumination Incidence Angle (deg): 82.57
Phase Angle (deg): 58.38
Instrument Look Direction: N/A
Surface Emission Angle (deg): 39.89

Ordering Information
CD-ROM Volume: VO_1059
NASA Image ID number: 421B64
Other Image ID number: 54809365
NSSDC Data Set ID (Photo): 75-083A-01D
NSSDC Data Set ID (CD): 75-083A-01a
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