90482 Orcus
asteroid
(Kaelih saka Orcus)
90482 Orcus iku sawijining objèk Sabuk Kuiper lan kamungkinan iku planit cilik sing tinemu déning Michael Brown saka Caltech, Chad Trujillo saka Observatorium Gemini, lan David Rabinowitz saka Universitas Yale. Gambar panemon bendha iki diéntuki tanggal 17 Fèbruari 2004. Gambar prapanemon sing wis diéntuki sadurungé nalika tanggal 8 November 1951, banjur bisa diidhèntifikasikaké.
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Panemon[1]
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|---|---|
| Panemu | M. Brown, C. Trujillo, D. Rabinowitz |
| Tanggal ditemokaké | 17 Fèbruari 2004 |
Penamaan
| |
| Penamaan MPC | 90482 Orcus |
| Nama alternatif | 2004 DW |
| Kategori planet minor |
Plutino[2][3] kandidat Plutoid |
| Epos 30 November 2008 (dina Julian 2 454 800) | |
| Aphelion | 7 188,17 Gm (48,05 SA) |
| Perihelion | 4 535,80 Gm (30,32 SA) |
| Sumbu semi-mayor | 5 862,44 Gm (39,188 SA) |
| Eksentrisitas | 0,226 18 |
| Periode orbit | 89 606 h (245,33 thn) |
| Kecepatan orbit rata-rata | 4,68 km/det |
| Anomali rata-rata | 164,68° |
| Inklinasi | 20,593° |
| Bujur node menaik | 268,722° |
| Argumen perihelion | 72,474° |
| Satelit | 1 (92-432 km) |
Ciri-ciri fisik
| |
| Dimensi | 946,3 Cithakan:± km (dhiamèter)[4] |
| Massa | ~7×1020 kg |
| Kepadatan rata-rata | ~1,6 g/cm³ (sebandhing karo Charon)[5] |
| Gravitasi permukaan di khatulistiwa | ~0,2 m/det² |
| Kecepatan lepas | ~0,44 km/det |
| Periode rotasi | 10,08 ± 0,01 jam[5] |
| Albedo | 19,75 Cithakan:± %[4] |
| Suhu | ~44 K[5] |
| Kelas spektrum | B-V=0,68; V-R=0,37[6](warna nétral)[5] |
| Magnitudo tampak | 19,1 (oposisi)[7][8] |
| Magnitudo mutlak (H) | 2,3[1] |
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Réferènsi
besut| Wikimedia Commons duwé médhia ngenani 90482 Orcus. |
- ↑ a b c "JPL Small-Body Database Browser: 90482 Orcus (2004 DW)". 2008-02-10. Dibukak ing 2008-07-02.
- ↑ Buie, Marc W. (2007-12-22). "Orbit Fit and Astrometric record for 90482". SwRI (Space Science Department). Dibukak ing 2008-09-19.
- ↑ "MPEC 2009-E53 : DISTANT MINOR PLANETS (2009 MAR. 30.0 TT)". Minor Planet Center. 2009-03-11. Dibukak ing 2009-03-25.
- ↑ a b Stansberry, J.; Grundy, W.; Brown, M.; et al. (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope".
{{cite journal}}: Cite journal requires|journal=(pitulung) - ↑ a b c d Barucci, M. A.; Merlin; Guilbert; Bergh; Doressoundiram; et al. (2008). "Surface composition and temperature of the TNO Orcus". Astronomy and Astrophysics. 479 (1): L13–L16. doi:10.1051/0004-6361:20079079. Dibukak ing 2009-03-29.
- ↑ Tegler, Stephen C. (2006-01-26). "Kuiper Belt Object Magnitudes and Surface Colors". Dibukak ing 2006-11-05.
- ↑ "AstDys (90482) Orcus Ephemerides". Department of Mathematics, University of Pisa, Italy. Dibukak ing 2009-03-19.
- ↑ "HORIZONS Web-Interface". JPL Solar System Dynamics. Dibukak ing 2008-07-02.
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