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थेमीस्टो (उपग्रह)

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थेमीस्टो #ffc0c0 Themistoan, Themistonian 200 yes Charles Kowal (1975) Elizabeth Roemer (1975) Scott S. Sheppard (2000) David C. Jewitt (2000) Yanga R. Fernández (2000) Eugene A. Magnier (2000) September 30, 1975 November 21, 2000 rediscovered 7,391,650 km (0.04941 AU) 0.2006 5,909,000 km (0.039 AU) 8,874,300 km (0.059 AU) 129.82761 d (0.3554 a) 4.098 km/s 45.81° (to the ecliptic)47.48° (to Jupiter's equator) Jupiter yes 4 kmSheppard, S. S.; Jewitt, D. C.; An abundant population of small irregular satellites around Jupiter, Nature, 423 (May 2003), pp. 261-263 ~25 km ~200 km² ~270 km³ 6.8914 kg 2.6 g/cm3 assumedPhysical parameters from JPL ~0.0029 m/s2 (0.0003 g) ~0.0048 km/s 0.04 assumed ~124 K थेमीस्टो (Themisto), (icon θ ɨ ˈ m ɪ s t oʊ; ग्रीक से: Θεμιστώ), बृहस्पति का एक छोटा अनियमित उपग्रह है। 1975 में खोज हुई, खो गया, उसके बाद 2000 में फिर से खोजा गया। यह ज्यूपिटर XVIII के रूप में भी जाना जाता है। thumb|left|410px|Diagram illustrating Themisto's orbit (top left) among those of the other irregular satellites of Jupiter. The satellites above the horizontal axis are prograde, the satellites beneath it are retrograde. The yellow segments extend from the pericentre to the apocentre, showing the orbital eccentricity. सन्दर्भ श्रेणी:खगोलशास्त्र