90482 Orcus

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90482 Orcus 🝿
Orcus-vanth hst2.jpg
Enmys shallidagh2004 DW Edit the value on Wikidata
Sorçhplanaid crivassanagh
Possan myn-phlanaidynpluteeno
Feddynit magh ecMichael E. Brown[1]
Chad Trujillo[1]
David L. Rabinowitz (en) Translate[1] Edit the value on Wikidata
Date feddyn maghToshiaght Arree 17, 2004
EpennymOrcus (en) Translate
Moir-redYn Ghrian
Red lhiennoo
Vanth (en) Translate Edit the value on Wikidata
Fysserree fishigagh
 Jeeagh er y stayd roie
Periapsis30.17351 AU
(arg (ω): 72.474)[2] Edit the value on Wikidata
Essyl vooar a39.1742376 AU[3]
Corrid e0.22618
Mean-amreiltagh M164.68 ° Edit the value on Wikidata
Cleayn i20.573 °
Foddid y noad ardjeeagh Ω268.722 °
Troyn fishigagh as rollageagh meadragh
Craue raadeeoil458.5 km Edit the value on Wikidata
Jarroo-vooadys2.2 Edit the value on Wikidata
Glout634.8 Eg Edit the value on Wikidata
Albedo0.1975 (albedo towse-oaylleeagh) Edit the value on Wikidata
Catalogyn rollageydagh
Enneyder JPL2090482 Edit the value on Wikidata
Straih
« 90481 Wollstonecraft (en) Translate Edit the value on Wikidata • (90483) 2004 DM4 (en) Translate Edit the value on Wikidata »

Ta 90482 Orcus ny Orcus (ASE: /ˈɔrkəs/ or'-kəs, Ladjyn: Orcus, shenn ennym: 2004 DW) ny chorpane Chryss Kuiper (KBO) feddynit magh ec Michael Brown, Chad Trujillo as David L. Rabinowitz. Va jallooyn y feddyn magh goit er 17 Toshiaght Arree, 2004.

Cruinlagh[reagh | edit source]

Ta'n jalloo soilsheragh shoh taishbyney cruinlee Orcus (gorrym), Pluto (jiarg) as Neptune (lheeah). Ta Orcus as Pluto taishbynit ayns nyn ynnydyn ayns Averil 2006. Ta daten nyn muill s'odjey (Q) as nyn muill s'faggys (q) soilshit myrgeddin.

Ta Orcus ny phluteeno sampleyragh (red t'ayns aavuilley cruinlagh 2:3 lesh Neptune). Ta'n cruinlagh 247 bleeantyn echey jeh cummey cruinlagh Pluto (ta'n perihelion oc çheu heose jeh'n ecliptagh) agh lesh ard anchaslagh. Ga dy dy vel y cruinlagh echey goaill toshiaght dy heet faggys da cruinlagh Neptune, ta foddeeaght mooar eddyr oc rere yn aavuilley (ta ny smoo na 60 keimyn scarrey uillinagh eddyr oc).

Troyn fishigagh[reagh | edit source]

Mooadys as reayrtys[reagh | edit source]

Yn ChruinneyDysnomia(136199) ErisCharon(134340) Pluto(136472) Makemake(136108) 2003 EL61(90377) Sedna(90482) Orcus(50000) Quaoar(20000) Varuna
Orcus cosoylit rish Eris, Pluto, Makemake, (136108) 2003 EL61, Sedna, Varuna, Quaoar, as y Chruinney.

She 2.3 jarroo-vooadys Orcus (ta cosoylagh rish jarroo-vooadys y KBO elley 50000 Quaoar). Ayns ny kied meeghyn 2007 va pabyr soilshit magh va taishbyney dy vel Orcus cronnaghit ec fodreayrtan spoar Spitzer ayns fo-yiarg foddey, car y chied tree bleeantyn gobbraghey, as v'eh feddynit magh nagh vel Orcus agh 946.3+74.1−72.3 km er crantessen[4] T'eh jeeaghyn dy vel ard-albedo ~ 20 % ec Orcus.

Daaghyn as scaanyn[reagh | edit source]

Rere baghtalyn ayns fo-yiarg lesh Thie Rollageydys Yiass ny h-Oarpey ta Orcus co-yeant ass ushtey rio as co-elmintyn carboanagh.[5] Er goll ny s'diuney, va ny scaanyn fo-yiarg goit ec yn 'odreayrtan Gemini feeraghey dy vel 15—30% ushtey rio (ny nagh row ny smoo na 50%) er y thalloo. T'eh shen, ta ny sloo ushtey rio er Orcus na t'er Charon, agh dy vel y mooad keddin er myr t'er Triton. Myrgeddin, va joaraghyn currit er y vooad rio meetane (ny sloo na 30%) er, as eh çheet er jargaght dy vel co-elmintyn elley er y phlanaid.[6]

Ta KBOyn taishbyney caghlaays daaghyn as scaanyn, agh ta Orcus taishbyney daah neuchommeeagh ta neuchosoylagh rish jiargid y chorpane cosoylagh rish Ixion.

Fo-phlannad[reagh | edit source]

Va feddyn magh fo-phlannad Orcus soilshit magh ayns IAUC 8812 er 22 Toshiaght Arree 2007[7] Cha nel y cruinlagh echey er fys ain foast, ansherbee.

Va'n fo-phlannad fakinit mygeayrt 0.25 arcsec veih Orcus lesh anchasley vooadys 2.7 echey.[8]

Credjal dy vel albedo yn 'o-phlannad unnane as albedo Orcus, ta'n mooadys coyrlaghey da vel eh feer mooar er crantessen my vel eh cosoylit rish y phlanaid hene (~220 km).

Ennym[reagh | edit source]

Rere stiurey cliaghtey enmys yn IAU, t'ad enmyn jeeghyn fo-halloo ta currit er corpaneyn lesh mooadys as cruinlagh cosoylagh rish Pluto. Lesh shen, hugg Brown, Trujillo as Rabinowitz yn ennym Orcus, jee ny marroo ayns feayn-skeealleydaght Romanagh, er oaie. Va'n ennym coontit as soilshit magh er 22 Sauin, 2004.

Kianglaghyn magh[reagh | edit source]

Imraaghyn[reagh | edit source]

  1. 1.0 1.1 1.2 Stated in: Minor Planet Center Database.
  2. Stated in: JPL Small-Body Database. JPL Small-Body Database SPK-ID: 2090482.
  3. Reference URL: https://www.minorplanetcenter.net/db_search/show_object?object_id=90482.
  4. Stansberry, J.; Grundy, W.; Brown, M.; et.al. (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". 
  5. C. de Bergh, A. Delsanti, G. P. Tozzi, E. Dotto, A. Doressoundiram and M. A. Barucci (2005). "The Surface of the Transneptunian Object 9048 Orcus". Astronomy & Astrophysics. Ym-lioar 437: 1115–1120. doi:10.1051/0004-6361:20042533. 
  6. Chadwick A. Trujillo, Michael E. Brown, David L. Rabinowitz, Thomas R. Geballe (2005). "Near Infrared Surface Properties of the Two Intrinsically Brightest Minor Planets (90377) Sedna and (90482) Orcus". The Astrophysical Journal. Ym-lioar 627: 1057–1065. doi:10.1086/430337.  Preprint on arXiv.
  7. http://www.johnstonsarchive.net/astro/astmoons/am-90482.html
  8. Distant EKO The Kuiper Belt Electronic newsletter, Mart 2007


Reddyn tessen-Neptioonagh
Pluteeno Pluto · 1993 SB · 1993 SC · 1994 JR1 · 1994 TB · 1995 QZ9 · 1996 SZ4 · 1996 TP66 · 1996 TQ66 · 1997 QJ4 · 1998 HK151 · 1998 US43 · 1998 VG44 · 1998 WW24 · 1998 WU31 · Rhadamanthus · 1999 TC36 · Huya · Ixion · 2002 KX14 · 2002 VR128 · 2003 VS2 · Orcus · 1993 RO · 1993 RP · 2003 AZ84 · 2001 QF298
Cubewano 1992 QB1 · 1994 GV9 · 1994 JQ1 · 1994 VK8 · 1995 GJ · 1995 SM55 · 1996 TO66 · Logos · 1997 CS29 · 1997 CU29 · 1998 HJ151 · 1998 HP151 · 1998 HM151 · 1998 KR65 · Chaos · 1998 WA25 · 1999 DF9 · 1999 HT11 · Deucalion · Varuna · 2002 AW197 · Quaoar · 2002 TX300 · 2002 UX25 · 2003 EL61 · 2003 OP32 · 2004 GV9 · Makemake1 · 2005 RN43 · Teharonhiawako · 1998 WW31 · 2002 MS4 · 2003 MW12 · 2003 QW90
Twotino 1996 TR66 · 1998 SM165 · 1999 RB216 · 2000 JG81 · 2002 WC19 · 1997 SZ10
Reddyn aavingyssagh elley 1994 JS · 1995 DA2 · 1998 WA31 · 1999 CP133 · 1999 DE9 · 1999 HB12 · 2001 KC77 · 2001 KP77 · 2002 TC302 · 2003 LG
Reddyn y jysk skeaylt Eris1, 2 · 1995 TL8 · 1996 GQ21 · 1996 TL66 · 1999 CC158 · 2000 EE173 · 2000 OO67 · 2000 OM67 · 2001 UR163 · 2002 CY224 · 2002 GX32 · 2002 RP120 · Sedna2 · 2005 RM43 · 2000 CR105 · 2004 XR190 · 2005 TN74 · 2006 QH181
Neu-horçhit 1997 CR29 · 1998 SN165 · 1999 CL158 · 1999 HC12 · 1999 KR16 · 1999 OY3 · 2003 FY128 · 2004 SB60 · 2004 TY364 · 2005 RR43
Eaystyn Charon (Pluto) · Hydra (Pluto) · Nix (Pluto · Dysnomia (Eris) · S/2000 (1998 WW31) 1 · S/2005 (136108) 1 · S/2005 (136108) 2 · Zoe (Logos) · S/2005 (79360) 1 · Sawiskera (Teharonhiawako)
1 Rang-oardit myr planaid crivassanagh myrgeddin.
2 Ta Eris as Sedna rang-oardit myr SDO, agh foddee dy vel ad nyn gooid jeh'n Bodjal Oort çheusthie, ansherbee.