Rosetta obtains 'light curve' of asteroid Steins

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Brightness variation of the asteroid measured continuously over one day. The maximum in the light curve is about 23 percent brighter than the minimum. Credits: Stefano Mottola (DLR) OSIRIS team
Brightness variation of the asteroid measured continuously over one day. The maximum in the light curve is about 23 percent brighter than the minimum. Credits: Stefano Mottola (DLR), OSIRIS team

During the very first observations of Rosetta’s flyby target 2867-Steins in March 2006 the onboard camera OSIRIS obtained the most accurate ‘light curve’ of this asteroid so far.


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