NASA Mars Odyssey THEMIS Image: Crater Ejecta 07-26-2005

Status Report From: Mars Odyssey THEMIS
Posted: Tuesday, July 26, 2005

Medium image for 20050726a
Image Context:
Context image for 20050726a
Context image credit: NASA/Mars Orbiter Laser Altimeter (MOLA) Team
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ParameterValue ParameterValue
Latitude34.6   InstrumentVIS
Longitude326.1E (33.9W)   Resolution (m)18
Image Size (pixels)3230x1508   Image Size (km)61x28.5

Full data on this image has now been released via the THEMIS Data Releases website.

From crater exteriors we move to looking at crater ejecta with today's image. Note the radial "spokes" on the top of the ejecta surrounding the crater. These surface features are formed during the ballistic emplacement of the ejecta and other materials being thrown out of the crater by the force of the impact.

[Source: ASU THEMIS Science Team]

Note: this THEMIS visual image has not been radiometrically nor geometrically calibrated for this preliminary release. An empirical correction has been performed to remove instrumental effects. A linear shift has been applied in the cross-track and down-track direction to approximate spacecraft and planetary motion. Fully calibrated and geometrically projected images will be released through the Planetary Data System in accordance with Project policies at a later time.

NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

Image Credit: NASA/JPL/Arizona State University

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