Mars - Viking 1 Lander

Rocks and Silt in Chryse Planitia on Mars

This image of Chryse Planitia was taken by camera 2 on the Viking 1 Lander on 20 July 1978, exactly two Earth years after Viking 1 landed and took the first picture of this region. It shows a field of rocks and silt, some of the dust is concentrated into drifts, which may be stable erosional remnants of sedimentary cover. The darker drift at upper right appears to be enriched in ferrous material. The larger boulders near the horizon are about 90 meters away and 1 to 2 meters in diameter. Images were taken of the same scenes over a long period of time to look for surface changes. The camera is looking roughly south-southeast. (Viking 1 Lander, P-20453)
Larger image (140K)

High resolution tiff file (631K)

Location & Time Information
Date/Time (UT): 1978-07-20
Distance/Range (km): 0.01
Central Latitude/Longitude (deg): 022.27 N, 49.97 W
Orbit(s): lander

Imaging Information
Area or Feature Type: lander image, surface
Instrument: Viking Lander Scanning Camera 2
Instrument Resolution (pixels): 512 vertical, 6 bit
Instrument Field of View (deg): 100 x 0.12 (single scan), 100 x 342.5 (max.)
Filter: N/A
Illumination Incidence Angle (deg): N/A
Phase Angle (deg): N/A
Instrument Look Direction: N/A
Surface Emission Angle (deg): 90.

Ordering Information
CD-ROM Volume: N/A
NASA Image ID number: p20453
Other Image ID number: 12I069/690
NSSDC Data Set ID (Photo): 75-075C-06F
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: Ed Grayzeck,

Last updated: 24 September 2015