90482 Orcus

90482 Orcus   

Ontdekking [1][2]
Ontdek deur	Michael Brown Chad Trujillo David Rabinowitz
Kleinplaneet-benaming	(90482) Orcus
Alternatiewe name	2004 DW
Kleinplaneet-kategorie	TNV [1] Plutino [3][4]
Etimologie	’n Etruskiese god van die onderwêreld[5]
Wentelbaaneienskappe [1]
Epog 4 September 2017
Afelium	48,069 AE
Perihelium	30,727 AE
Halwe lengteas	39 398 AE
Wentelperiode	247,29 jaar (90,324 dae)
Gem. anomalie	177,73°
Baanhelling	20,582°
Lengteligging van stygende nodus	268,72°
Periheliumhoek	72,393°
Natuurlike satelliete	Vanth
Fisiese eienskappe
Afmetings	917±25 km[6] 910+50−40 km[7]
Massa	6,41±0,19×1020 kg[8]
Gem. digtheid	1,53+0,15−0,13 g/cm3[6]
Rotasieperiode	13,188 uur[9]
Deklinasie	-5°[10]
Skynmagnitude	19,1[11][12]
Absolute magnitude	2,31±0,03[6] 2,41±0,05[13]

90482 Orcus (voorlopige naam 2004 DW) is ’n trans-Neptunus-voorwerp (TNV) in die Kuipergordel met ’n groot maan, Vanth. Dit is op 17 Februarie 2004 ontdek deur die Amerikaanse sterrekundiges Michael Brown, Chad Trujillo en David Rabinowitz. Beelde van Orcus voor sy ontdekking strek terug tot 8 November 1951.^[2]

1. ↑ ^{1,0 1,1 1,2} Verwysingfout: Invalid <ref> tag; no text was provided for refs named jpldata
2. ↑ ^{2,0 2,1} Verwysingfout: Invalid <ref> tag; no text was provided for refs named MPC-Orcus
3. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named Buie
4. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named MPEC 2009-E53
5. ↑ Schmadel, Lutz D. (2006). "(90482) Orcus [39.5, 0.22, 20.5]". Dictionary of Minor Planet Names – (90482) Orcus, Addendum to Fifth Edition: 2003–2005. Springer Berlin Heidelberg. p. 236. doi:10.1007/978-3-540-34361-5_2818. ISBN 978-3-540-34361-5. Besoek op 3 April 2017.
6. ↑ ^{6,0 6,1 6,2} Verwysingfout: Invalid <ref> tag; no text was provided for refs named TNOsCool8
7. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named brown2018
8. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named Carry2011
9. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named Barucci2008
10. ↑ Carry 2011, Table 4.
11. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named AstDys
12. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named Horizons
13. ↑ Verwysingfout: Invalid <ref> tag; no text was provided for refs named Brown2010