Talk:Proper orbital elements

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Is really "Proper elements" a concept used by astronomers? Does it mean "any Kepler orbit that gives a better long term fit then the osculating one"?

Strange concept! Should possibly the article be removed?

Stamcose (talk) 16:29, 18 July 2008 (UTC)

The existence of the concept does seem to be supported by a scholarly reference. -- Beland (talk) 17:44, 1 December 2008 (UTC)

Diagram request[edit]

It would be nice to see a diagram illustrating the various quantities, and perhaps how they differ from standard orbital elements. -- Beland (talk) 17:44, 1 December 2008 (UTC)