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90377 Sedna

Saka Wikipédia Jawa, bauwarna mardika basa Jawa
(Kaelih sakaSedna)
90377 Sedna⯲
Panemon[1]
PanemuM. Brown,
C. Trujillo,
D. Rabinowitz
Tanggal ditemokaké14 November 2003
Penamaan
Penamaan MPC90377 Sedna
Nama alternatif2003 VB12
Kategori
planet minor		objèk trans-Neptunus
objèk kauwal[2]
Epos 26 September 1990 (dina Julian 2 448 160,5)
Aphelion1,459×1014 m (975.56 SA)
Perihelion1,139 3×1013 m (76,156 SA)
Sumbu semi-mayor7,866 8×1013 m (525,86SA)
Eksentrisitas0,855
Periode orbitsakiwa-tengené 4.404.480dina (12.059,06taun)
Kecepatan orbit rata-rata1,04 km/det
Anomalirata-rata357,457°
Inklinasi11,934°
Bujur node menaik144,514°
Argumen perihelion311,123°
Ciri-ciri fisik
Dimensi1.200–1.600 km[3]
<1.600 km[4]
Massa8,3×1020–7,0×1021 kg[5]
(0,05–0,42 Eris)
Kepadatan rata-rata2,0? g/cm³
Gravitasi permukaan di khatulistiwa0,33–0,50 m/s²
Kecepatan lepas0,62–0,95 km/s
Hari sideris0,42 h (10 j)1
Albedo0,16–0,30[3]
Suhusangisoré 33K
Kelas spektrum(merah) B-V=1,24; V-R=0,78[6]
Magnitudo tampak21,1[7]
20,4 (Perihelik)[8]
Magnitudo mutlak(H)1,56[9]

90377 Sedna (simbol:⯲)[10] iku sawijiningobjèk trans-Neptunus sing tinemu déningMichael E. Brown (Caltech),Chad Trujillo (observatorium Gemini) lanDavid Rabinowitz (Universitas Yale) nalika tanggal14 November2003. Nalika tinemu, Sedna wujud bendha langit sajeroningTata Surya paling adoh sing tau diamati ing wektu iku. Dhiamèter Sedna watara 1.180 nganti 1.800 km kanthi massa 1,7-6,1 x 1021 kg.Perihelion Sedna 76,156AU éwadénéaphelion-é 975,056 AU. Sedna mbutuhaké12.000 taun kanggo saubengan ngorbitSrengéngé.

Jeneng

[besut |besut sumber]

JenengSedna dijupuk saka jenengdéwi laut bangsaInuit, sing kanthi mitologis manggon ing dhasarsamodraArtik.[11]

Rujukan

[besut |besut sumber]
  1. ↑"Discovery Circumstances: Numbered Minor Planets (90001)-(95000)". IAU: Minor Planet Center. Dibukak ing2008-07-23.
  2. ↑abBuie, Marc W. (2007-08-13)."Orbit Fit and Astrometric record for 90377".Deep Ecliptic Survey. Dibukak ing2006-01-17.
  3. ↑abBrown, Michael E."The largest Kuiper belt objects"(PDF).CalTech. Dibukak ing2008-09-19.
  4. ↑Stansberry, John; Will Grundy; Mike Brown; Dale Cruikshank; John Spencer; David Trilling; Jean-Luc Margot (2007)."Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope".University of Arizona, Lowell Observatory, California Institute of Technology, NASA Ames Research Center, Southwest Research Institute, Cornell University. Dibukak ing2008-07-27.
  5. ↑Radius of 590 km and density of0.97 = 8.3×1020 kg mass. Radius of 900 km and density of2,3 = 7,0×1021 kg massa
  6. ↑Tegler, Stephen C. (2006-01-26)."Kuiper Belt Object Magnitudes and Surface Colors". Diarsip sakasing asli ing 2012-09-08. Dibukak ing2006-11-05.
  7. ↑"AstDys (90377) Sedna Ephemerides". Department of Mathematics, University of Pisa, Italy. Dibukak ing2009-03-16.
  8. ↑"Horizons Output for Sedna 2076/2114". Diarsip sakasing asli ing 2011-06-29. Dibukak ing2007-11-19.Horizons
  9. ↑"JPL Small-Body Database Browser: 90377 Sedna (2003 VB12)". 2007-11-08. Dibukak ing2008-06-11.
  10. ↑U+2BF2 ⯲. David Faulks (2016) 'Eris and Sedna Symbols,'L2/16-173R, Unicode Technical Committee Document Register.
  11. ↑Mike Brown."Sedna". CalTech. Dibukak ing2010-07-20.


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