Satellite-to-Satellite Tracking in the Two-body Problem

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When using only Satellite-to-Satellite Tracking (SST), none of the observations have any direct link to the ground, so all the information about where the spacecraft are in space must come from their orbital dynamics. In the case of the two-body problem, the acceleration vectors (shown above) are all symmetric about the center of mass. There aren't any distinguishing characteristics to the dynamics that could reveal the absolute orientation with respect to the center of mass.

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