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Stephano (uydu)

Stephano
Stephano'nun keşif görüntüsü (daire içinde)
Keşif
Keşfeden
Keşif tarihi18 Temmuz 1999
Adlandırmalar
MPC belirtmesiUranus XX
SıfatlarStephanonian[1]
Yörünge özellikleri
Ortalama yörünge yarıçapı
8.004.000 km[2][3]
Dış merkezlik0,2292[3]
677,37 g
Eğiklik141,81° (tutuluma), 144°[2]
Doğal uydusuUranüs
Fiziksel özellikler
Ortalama yarıçap
16 km (tahmini)[4]
~3.000 km2 (tahmini)
Hacim~20.000 km3 (tahmini)
Kütle~2,2×1016 kg (tahmini)
Ortalama yoğunluk
~1,3 g/cm3 (varsayılan)
~0,0041 m/sn2 (tahmini)
~0,013 km/sn (tahmini)
?
?
Albedo0,04 (varsayılan)[4]
Sıcaklık~65 K (tahmini)
  Wikimedia Commons'ta ilgili ortam

Stephano, Uranüs'ün ters yön yörüngeye sahip düzensiz uydusudur. 18 Temmuz 1999'da Brett J. Gladman, Matthew J. Holman, John J. Kavelaars, Jean-Marc Petit ve Hans Scholl tarafından Hawaii adasındaki Mauna Kea Gözlemevi'nde Kanada-Fransa-Hawaii Teleskobu kullanılarak keşfedildi ve geçici olarak S/1999 U 2 adı verildi. Prospero ve Setebos da aynı anda keşfedilmiştir.[5][6][7][8][9]

Uranus XX belirtmesiyle onaylandıktan sonra Ağustos 2000'de, William Shakespeare'in Fırtına adlı oyunundaki Napoli Kralı Alonso'nun sarhoş kahyası Stephano'nun adı verildi.[10]

Yörünge parametreleri, Caliban ile aynı dinamik kümeye ait olabileceğini ve ortak bir kökene sahip olduklarını göstermektedir.[11]

Ayrıca bakınız

Kaynakça

  1. ^ Lessing (1914) How the Ancients Represented Death
  2. ^ a b Sheppard, Jewitt & Kleyna 2005, s. 523, Table 3.
  3. ^ a b Yeomans, Donald K. (28 Haziran 2007). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. 21 Haziran 2006 tarihinde kaynağından arşivlendi. Erişim tarihi: 19 Ocak 2008. 
  4. ^ a b Sheppard, Jewitt & Kleyna 2005, s. 523, Table 3 ... ri (km) ... 16 ... i 0,04 geometrik albedo varsayılarak uydunun yarıçapı.
  5. ^ Gladman, B. J.; Kavelaars, J. J.; Holman, M. J., Petit, J.-M.; Scholl, H.; Nicholson, P. D.; Burns, J. A.; The Discovery of Uranus XIX, XX, and XXI, Icarus, 147 (2000), ss. 320–324
  6. ^ Marsden, Brian G.; Probable New Satellites of Uranus, IAUC 7230 18 Temmuz 2013 tarihinde Wayback Machine sitesinde arşivlendi., 27 Temmuz 1999
  7. ^ Marsden, Brian G.; Probable New Satellites of Uranus, IAUC 7248 5 Ekim 2013 tarihinde Wayback Machine sitesinde arşivlendi., 4 Eylül 1999
  8. ^ Marsden, Brian G.; S/1999 U 1, S/1999 U 2 and S/1999 U 3, IAUC 7385 27 Mart 2012 tarihinde Wayback Machine sitesinde arşivlendi., 24 Mart 2000
  9. ^ Marsden, Brian G.; S/1999 U 2, IAUC 7473 27 Mart 2012 tarihinde Wayback Machine sitesinde arşivlendi., 5 Ağusts 2000
  10. ^ Marsden, Brian G.; Satellites of Uranus, IAUC 7479 21 Şubat 2020 tarihinde Wayback Machine sitesinde arşivlendi., 21 Ağustos 2000
  11. ^ Grav, Tommy; Holman, Matthew J.; Gladman, Brett J.; Aksnes, Kaare; Photometric survey of the irregular satellites,Icarus, 166 (2003), ss 33-45. arXiv:astro-ph/0301016

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