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)[reply]
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)[reply]