Talk:S/2018 J 4

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✠ SunDawn ✠ (contact) 06:03, 21 January 2023 (UTC)[reply]

Some preliminary S/2018 J 4 notes

I've done some quick investigation^{[original research]} into S/2018 J 4's orbit before others publish more details about it:

Kozai resonant orbit, arg. of periapse librates about 270° wrt ecliptic, opposite to Carpo's arg. of periapse libration about 90°.
Fixed 270° arg. of periapse keeps S/2018 J 4's perijove always below Jupiter and apojove above Jupiter, whereas Carpo's fixed 90° arg. of periapse keeps its perijove always above Jupiter and apojove below Jupiter. (see orbit diagram)
S/2018 J 4 approx. mean elements from 1900-2100: a = 16347800 km, i = 49.8°, e = 0.209

Nrco0e (talk) 08:22, 25 January 2023 (UTC)[reply]