Talk:Heliocentric orbit

Comments

This is an absolutely fascinating subject. Why is this wiki entry so sparse? not even a picture or diagram. — Preceding unsigned comment added by 99.235.22.123 (talk) 05:29, 15 December 2012 (UTC)

Merger with Trans-Mars injection

The following discussion is closed. Please do not modify it. Subsequent comments should be made in a new section. A summary of the conclusions reached follows.

The result of this discussion was to merge Trans-Mars injection into Heliocentric orbit Klbrain (talk) 17:12, 22 April 2016 (UTC)

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I've proposed that Trans-Mars injection be merged here. I don't think we really need a separate article on that topic, so it would make sense to cover it either here or in Hohmann transfer orbit. --W. D. Graham 12:54, 1 December 2013 (UTC)

Why this discussion again? A Heliocentric orbit is different to a Hohmann transfer orbit, and Trans-Mars injection is also much more special. The Heliocentric orbit is a general article, the Hohmann transfer is also viable on many other orbits, and Mars is really something special. But this article needs some enhancements: If the "barycenter of the Solar system" is not always inside of the sun we need an example on this. --Dgbrt (talk) 19:26, 3 March 2014 (UTC)

• Support the merge. A TMI orbit is definitely a subclass of Heliocentric orbit, in a way the Hohmann tranfer orbit is not, as Hohmann's can be around any celestial body, not just the Sun. Both articles are bare stubs, and adding the subclass TMI orbit to Heliocentric orbit would begin to give us one better/longer and more comprehensive article. N2e (talk) 16:05, 7 May 2014 (UTC)

• Support the merge, as having key examples on the page will help to develop the Heliocentric orbit page through the addition of an example. Both pages are small and easily support the merge. Klbrain (talk) 17:12, 22 April 2016 (UTC)

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

heliocentric vs barycentric

The article is wrong: heliocentric orbits, calculated relative the center of the sun; and barycentric orbits, calculated relative to the center of mass of the Solar System are not the same. If you look up heliocentric orbits many of the comets have hyperbolic orbits while the actual number is quite small, with `Oumuamua being the first that is definitely on a hyperbolic orbit. Agmartin (talk) 21:41, 11 December 2018 (UTC)

That is not correct. Heliocentric orbits are quite simply defined in spaceflight and planetary physics as orbits about the Sun. And yes, the "center" of those orbits from a Keplerian, Newtonian or general relativity physics point of view is, of course, around the barycenter of all the masses acting gravitationally on all the objects in what might be referred to as a the many-body-problem. However, that does not make the orbit to be something other than heliocentric. Cheers. N2e (talk) 16:59, 13 December 2019 (UTC)