Image:13-ml-04-deimos-A067R1.jpg

A transit of Deimos from Mars: Deimos is in transit across the Sun, as seen from Mars by Mars Rover Opportunity on March 4, 2004 at 03:03:43 UTC Earth time.

In the photo, the Sun has angular diameter 20.6' while Deimos only has 2.5'. Phobos by contrast usually has an angular diameter of around 12' as seen from Mars. Deimos took a little more than a minute to transit the Sun, passing well off center and moving downward and to the right; more central transits can take up to two minutes from start to end.

Credit: NASA/JPL/Cornell [1]

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[edit] Source

• http://marsrovers.jpl.nasa.gov/gallery/press/opportunity/20040311a.html