Talk:Osculating orbit

Expansion request
Orbital elements says that a perturbed orbit can be modeled as a series of osculating orbits. It would be nice if this article explained how this is done, and provided some diagrams to illustrate. -- Beland (talk) 17:38, 1 December 2008 (UTC)

Central body fixed?
Is the central body assumed to be fixed or is the motion defined relative to the barycenter? —Preceding unsigned comment added by 90.229.231.115 (talk) 18:23, 3 February 2009 (UTC)