Lihat sumber 90482 Orcus

{{Infobox Planet | discovery=yes | physical_characteristics = yes | bgcolour=#FFFFC0 | <!-- Scroll down to see the text of the article, below this table.-->
 name=90482 Orcus
 | image=[[Berkas:Orcus nasa.jpg|250px]]
 | discovery_ref = <ref name=jpldata>{{cite web |date=2008-02-10 last obs |title=JPL Small-Body Database Browser: 90482 Orcus (2004 DW) |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Orcus |accessdate=2008-07-02}}</ref>
 | discoverer=[[Michael E. Brown|M. Brown]],<br />[[Chad Trujillo|C. Trujillo]],<br />[[David L. Rabinowitz|D. Rabinowitz]]
 | discovered=[[17 Februari]] [[2004]]
 | mp_name = 90482 Orcus
 | pronounce = {{IPA-en|ˈɔrkəs|}} {{respell|OR|kəs}},<br />{{lang-la|Orcus}}
 | alt_names=2004 DW
 | mp_category=[[Plutino]]<ref name=Buie>{{cite web |author=[[Marc W. Buie|Buie, Marc W.]] |date=2007-12-22 |title=Orbit Fit and Astrometric record for 90482 |publisher=SwRI (Space Science Department) |url=http://www.boulder.swri.edu/~buie/kbo/astrom/90482.html
  |accessdate=2008-09-19}}</ref><ref name="MPEC 2009-E53">{{cite web |title=MPEC 2009-E53 : DISTANT MINOR PLANETS (2009 MAR. 30.0 TT) |date=2009-03-11 |publisher=Minor Planet Center |url=http://www.cfa.harvard.edu/mpec/K09/K09E53.html |accessdate=2009-03-25}}</ref><br />[[Daftar kandidat planet kerdil|kandidat Plutoid]]
 | orbit_ref=<ref name=jpldata/>
 | epoch=[[30 November]] [[2008]] ([[hari Julian]] 2&nbsp;454&nbsp;800)
 | semimajor=5&nbsp;862,44 [[Giga|G]]m (39,188 [[Satuan astronomi|SA]])
 | perihelion=4&nbsp;535,80 Gm (30,32 SA)
 | aphelion=7&nbsp;188,17 Gm (48,05 SA)
 | eccentricity=0,226&nbsp;18
 | period=89&nbsp;606 [[hari|h]] (245,33 [[Tahun Julian (astronomi)|thn]])
 | inclination=20,593[[derajat (satuan sudut)|°]]
 | asc_node=268,722°
 | arg_peri=72,474°
 | mean_anomaly=164,68°
 | avg_speed=4,68 km/[[detik|det]]
 | satellites=1 (92-432 km)
 | dimensions=946,3 {{±|74,1|72,3}} km (diameter)<ref name="Stansberry 2007">{{cite journal|last=Stansberry|first=J.| coauthors=Grundy, W.; Brown, M.; et al.|title=Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope|url=http://arxiv.org/abs/astro-ph/0702538v1|year=2007}}</ref>
 | mass=~7×10<sup>20</sup> [[kilogram|kg]]
 | density=~1,6 g/[[sentimeter kubik|cm³]] (sebanding dengan [[Charon (bulan)|Charon]])<ref name=Barucci2008>{{cite journal
  |last=Barucci |first=M. A. |coauthors=Merlin; Guilbert; Bergh; Doressoundiram; et al. |title=Surface composition and temperature of the TNO Orcus |journal=Astronomy and Astrophysics |volume=479 |issue=1 |pages=L13-L16 |year=2008 |doi=10.1051/0004-6361:20079079
  |url=http://adsabs.harvard.edu/abs/2008A%26A...479L..13B |accessdate=2009-03-29 }}</ref>
 | surface_grav=~0,2 m/det²
 | escape_velocity=~0,44 km/det
 | rotation=10,08 ± 0,01 jam<ref name=Barucci2008/>
 | spectral_type=B-V=0,68; V-R=0,37<ref>{{cite web|url=http://www.physics.nau.edu/~tegler/research/survey.htm |title=Kuiper Belt Object Magnitudes and Surface Colors |accessdate=2006-11-05 |last=Tegler |first=Stephen C. |coauthors= |date=2006-01-26}}</ref>(warna netral)<ref name=Barucci2008/>
 | magnitude = 19,1 ([[Oposisi (planet)|oposisi]])<ref name=AstDys>{{cite web |title=AstDys (90482) Orcus Ephemerides    |publisher=Department of Mathematics, University of Pisa, Italy |url=http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=Orcus
   |accessdate=2009-03-19}}</ref><ref name=Horizons>{{cite web |title=HORIZONS Web-Interface |publisher=[http://ssd.jpl.nasa.gov JPL Solar System Dynamics] |url=http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=Orcus |accessdate=2008-07-02}}</ref> 
 | abs_magnitude=2,3<ref name=jpldata/>
 | albedo=19,75 {{±|3,40|2,76}} %<ref name="Stansberry 2007"/>
 | single_temperature=~44 [[kelvin|K]]<ref name=Barucci2008/> }}

'''90482 Orcus''' adalah suatu objek [[Sabuk Kuiper]] dan kemungkinan adalah [[planet kerdil]] yang ditemukan oleh [[Michael E. Brown|Michael Brown]] dari [[Caltech]], [[Chad Trujillo]] dari [[Observatorium Gemini]], dan [[David Rabinowitz]] dari [[Universitas Yale]]. [[Gambar penemuan]] benda ini diperoleh pada tanggal [[17 Februari]] [[2004]]. Gambar [[prapenemuan]] yang telah diperoleh sebelumnya pada [[8 November]] [[1951]], kemudian dapat diidentifikasikan.

== Referensi ==
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[[Kategori:Kandidat planet kerdil]]
[[Kategori:Orcus]]

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