ESA - Space Science - Rosetta correctly lined up for critical Mars swingby

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Rosetta correctly lined up for critical Mars swingby

15 February 2007

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In this animation, Rosetta can be seen approaching Mars (red planet) and then swinging behind Mars with respect to Earth (blue planet) and the Sun (at centre), for a net reduction in velocity. Closest approach (250 km) is expected at 01:57:59.0 UTC, 25 February, +/- 1.3 seconds.

The animation clearly shows Rosetta swinging behind Mars to be eclipsed with respect to the Sun and occultated with respect to the Earth.

Credits: ESA - C. Carreau

Communications blackout, eclipse as Rosetta passes behind Mars

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During the course of its journey to Comet 67P/Churyumov-Gerasimenko, Rosetta is making use of several gravitational ‘kicks’: one at Mars on 25 February 2007 (250 km distance) and three at Earth: 4 March 2005 (1995 km distance), 13 November 2007 (5301 km distance) and 13 November 2009 (2500 km distance). Manoeuvres to correct Rosetta's orbit take place before and after each swing-by.

Credits: ESA, image by C.Carreau

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