Yn Dowan: Y trass planaid veih'n Ghrian ayns Corys my Greiney
She yn Dowan, ny yn Chruinney ny keayrtyn, yn trass planaid magh ass y ghrian ayns Corys ny Greiney, as yn queiggoo smoo.
Ta un eayst echey. Ta daa chowrey echey, 
as 
.
Yn Dowan .svg){kind=small} | |||
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| Sorçh | planaid ooirragh, planaid sthie as narrative location (en)  | ||
| Epennym | Y Dowan: voish *dubnos ("y diunid, dowin, y dowan") y Phroto-Cheltish Y Chruinney: voish *krundis ("cruinn") y Phroto-Cheltish Y Seihll: Voish saegul ("seihll, bioys, y dowan") y Çhenn-Yernish, voish saeculum ("bea, eash, traa, y dowan") y Ladjyn | ||
| Moir-red | y Ghrian | ||
| Red lhiennoo | |||
| Eash | J2000.0  | ||
| Croo | 4,540 million years BCE | ||
| Fysserree fishigagh | |||
| Sorçh fishigagh | cruinlagh grian-laarnagh | ||
| Apoapsis | 151,930,000 km ↔ y Ghrian 1 AU 1.01671 AU | ||
| Periapsis | 147,095,000 km ↔ y Ghrian (arg (ω): 114.20783) | ||
| Essyl lieh-vooar a | 1 AU as 149,598,023 km | ||
| Corrid e | 0.016710219 | ||
| Amm cruinlagh P | 365.256363004 d | ||
| Mean-amreiltagh M | 358.617 ° | ||
| Cleayn i | 7.155 ° ↔ mean-chiarkyl ny Greiney 1.57869 ° ↔ mean-chiarkyl neuchaghlaaee | ||
| Foddid y noad ardjeeagh Ω | 348.73936 ° | ||
| Troyn fishigagh as rollageagh meadragh | |||
| Craue raadeeoil | mean-chiarkyl: 6,378.137 km mean: 6,371 km poull çheer-oaylleeagh: 6,356.8 km | ||
| Crantessen | 12,742 km | ||
| Lheanaghey | 0.0033528 | ||
| Eaghtyr y vaare | 510,064,472 km² | ||
| Glout | 5,972.37 Yg | ||
| Thummid | 1,083,210,000,000 km³ | ||
| Mean-ghlooaght | 5,514 kg/m³ | ||
| Amm çhyndaaee | 24 h | ||
| Ym-hayrn eaghtyragh | 9.798 m/s² | ||
| Albedo | 0.434 (albedo towse-oaylleeagh) 0.306 (albedo Bond) | ||
| Çhiassid eaghtyragh |
| ||
| Aeraght | Co-heiy | ||
| Ayrn jeh | corys y Dowan as yn Eayst as Corys ny Greiney | ||
| Catalogyn rollageydagh | |||
806.4616.0110 (Encyclopedia Galactica) | |||
Imraaghyn
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