An illustration of the orbit of Procyon B about its primary. This is not what the orbit looks like from Earth, but is instead a "priveleged" perspective showing what it would look like from directly above--with of course, the primary treated as stationary instead of as in a mutual orbit about a barycenter. Periastron and apastron are labeled; the values in between are interpolated.

From English Wikipedia [1]

The creator gives permission.

15:10, 3 February 2007. Erimus 512×384 (9,364 bytes)

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