Harpalyke (satelit)

Harpalyke (bahasa Yunani: Αρπαλύκη), juga dikenal sebagai Jupiter XXII, adalah satelit ireguler retrograde Jupiter. Harpalyke ditemukan oleh tim astronom dari Universitas Hawaii yang dipimpin oleh Scott S. Sheppard pada tahun 2000, dan diberi nama sementara S/2000 J 5.[1][2] Pada bulan Agustus 2003, satelit ini dinamai[3] berdasarkan Harpaliki, putri Klimenos dari hasil pernikahan sedarah yang, berdasarkan beberapa sumber, juga merupakan selir dari Zeus (Jupiter).

Harpalyke termasuk dalam kelompok Ananke, yang diyakini merupakan sisa-sisa asteroid heliosentris yang pecah dan kemudian tertangkap oleh gravitasi Jupiter.[4][5] Harpalyke berdiameter sekitar 4 km[6] dan tampak berwarna abu-abu (indeks warna R-V=0.43), mirip dengan asteroid tipe C.[7] Satelit ini mengorbit Jupiter dengan jarak rata-rata sebesar 21.064.000 km dalam 624,542 hari, pada inklinasi sebesar 147° terhadap bidang ekliptika (147° terhadap khatulistiwa Jupiter) dengan eksentrisitas 0,2441.

Bersama Harpalyke, Jupiter untuk saat ini diketahui memiliki 79 satelit.

Referensi

  1. ^ IAUC 7555: Satellites of Jupiter Diarsipkan 2002-09-16 di Wayback Machine. January 5, 2001 (discovery)
  2. ^ MPEC 2001-A28: S/2000 J 2, S/2000 J 3, S/2000 J 4, S/2000 J 5, S/2000 J 6 Diarsipkan 2017-08-12 di Wayback Machine. January 5, 2001 (discovery and ephemeris)
  3. ^ IAUC 7998: Satellites of Jupiter Diarsipkan 2017-08-12 di Wayback Machine. 2002 October 22 (naming the moon)
  4. ^ Sheppard, S. S.; and Jewitt, D. C.; An Abundant Population of Small Irregular Satellites Around Jupiter Diarsipkan 2003-08-05 di Wayback Machine., Nature, Vol. 423 (May 2003), pp. 261-263
  5. ^ Nesvorný, D.; Alvarellos, J. L. A.; Dones, L.; and Levison, H. F.; Orbital and Collisional Evolution of the Irregular Satellites Diarsipkan 2020-04-15 di Wayback Machine., The Astronomical Journal, Vol. 126 (2003), pp. 398–429
  6. ^ Sheppard, S. S.; Jewitt, D. C.; and Porco, C. C.; Jupiter's Outer Satellites and Trojans Diarsipkan 2007-06-14 di Wayback Machine., in Jupiter: The Planet, Satellites and Magnetosphere, edited by Fran Bagenal, Timothy E. Dowling, and William B. McKinnon, Cambridge Planetary Science, Vol. 1, Cambridge, UK: Cambridge University Press, ISBN 0-521-81808-7, 2004, pp. 263-280
  7. ^ Grav, T.; Holman, M. J.; Gladman, B. J.; and Aksnes, K.; Photometric Survey of the Irregular Satellites Diarsipkan 2018-07-07 di Wayback Machine., Icarus, Vol. 166 (2003), pp. 33-45
  1. Ephemeris IAU-MPC NSES Diarsipkan 2011-05-20 di Archive.is
  2. Mean orbital parameters NASA JPL Diarsipkan 2013-11-03 di Wayback Machine.

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