Hyrrokkin (měsíc)

Hyrrokkin (měsíc)
Pozorovací údaje
(Ekvinokcium J2000,0)
Typměsíce Saturnu a Měsíce nepravidelného tvaru
ObjevitelScott S. Sheppard, David C. Jewitt, Jan Kleyna a Brian G. Marsden
Datum objevu12. prosince 2004
Zdánlivá magnituda (V)23,5
Označení v katalozích
(V) – měření provedena ve viditelném světle
Některá data mohou pocházet z datové položky.

Hyrrokkin (vyslovováno /ˌhɪˈrɒkɨn/) je malý měsíc planety Saturn. Jeho objev byl oznámen 26. června 2006 vědeckým týmem, jehož členy jsou Scott S. Sheppard, David C. Jewitt, Jan Kleyna a Brian G. Marsden.[1] Nalezen byl během pozorování provedených mezi 12. prosincem 2004 a 30. dubnem 2006. Po svém objevu dostal dočasné označení S/2004 S 19. V roce 2007 byl nazván Hyrrokkin, po obryni z norské mytologie.[2][3] Dalším jeho názvem je Saturn XLIV.

Hyrrokkin patří do skupiny Saturnových měsíců nazvaných Norové.

Vzhled měsíce

Předpokládá se, že průměr měsíce Hyrrokkin je přibližně 8 kilometrů[4] (odvozeno z jeho albeda).

Oběžná dráha

Hyrrokkin obíhá Saturn po retrográdní dráze v průměrné vzdálenosti 18,2 milionů kilometrů. Oběžná doba je 914,3 dní.[4]

Reference

  1. ↑ IAUC 8727: Satellites of Saturn - 30. červen 2006 (objev)
  2. ↑ IAUC 8826: Satellites of Jupiter and Saturn - 5. duben 2007 (pojmenování měsíce)
  3. ↑ IAUC 8860: Saturn XLIV (Hyrrokkin) 31. červenec 2007 (úparava zápisu jména)
  4. ↑ a b Saturn's Known Satellites

Externí odkazy

  • Logo Wikimedia Commons Obrázky, zvuky či videa k tématu Hyrrokkin na Wikimedia Commons


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Saturnovy měsíce
Pastýřské měsíce
Koorbitální měsíce
Prstenec G
Rodina vnitřních měsíců a Trojané
Rodina vnějších velkých měsíců
Rhea • Titan • Hyperion • Iapetus
Rodina Inuitů
Rodina Norů
Skupina Galů
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