Phobos Grunt attitude based upon visual observation

Date: Sun Nov 27 2011 - 02:49:50 UTC

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    Since Derek Breit provided a picture of the spacecraft that explained the color, I am wondering if the attitude may be inferred from the visual magnitude during a pass.  In particular, the 87 degree pass I observed a few days ago did show a significant brightness decrease at some point after culmination.
    Assuming that the spacecraft would have been in some inertial attitude for the planned burns over South America, if it remained in the same attitude since the observed magnitude might be different than if some part of the spacecraft always faces to the nadir (Earth).
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