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Orcus (planaid crivassanagh)

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Orcus 🝿
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[1] Edit the value on Wikidata
Date feddyn maghToshiaght Arree 17, 2004
EpennymOrcus (en) Translate
Moir-redy 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 lieh-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
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

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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

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Mooadys as reayrtys

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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

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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

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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).

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

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Imraaghyn

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  1. a b c 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