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Sedna

Chest artícol a l'è scricc in Lumbàrt, ortograféa orientàl unificàda.


Sedna ⯲
(90377 Sedna)
Sedna töt zó del Telescopi spasiàl Hubble
Sedna töt zó del Telescopi spasiàl Hubble
Descuprii 14 de november del 2003
Descovridor Michael Brown
Chad Trujillo
David Rabinowitz
Classificazion Ogèt transnetünià, sednoide
Class spettrala ?
Parameter orbital
(a l'epoca JD 2448160,5)
Semiass maggior 78 629 540 000 km
525,606 UA
Perieli 11 392 832 000 km
76,156 UA
Afeli 145 866 248 000 km
975,056 UA
Period orbital 12 050,32 agn
Velocità orbitala

1 040 m/s (media)

Inclinazion
su l'eclittega
11,934°
Ecentricità 0,855
Longituden del
noeud ascendent
144,514°
Argom. del perieli 311,122°
Anomalia media 357,455°
Prossim perieli 2075-2076
Dati fisegh
Dimension 1 180 − 1 800 km
Volum
Massa
1,7 − 6,1 × 1021 kg
Densità media 2,0 × 103 kg/m³?
Acceleraz. de gravità in superfiss 0,33 − 0,50 m/s²
Velocità de fuga 620 − 950 m/s
Period de rotazion 0,42 giorni (10 ore)
Temperatura
superficiala
~12 K (−261 °C) (media)
Albedo 0.32 ± 0.06
Dati d'osservazion
Magnituden app. 21,12
Magnituden ass. 1,6
Sedna (endel sércol vért).

Sedna (denuminasiù uficiàla: 90377 Sedna; simbul: ⯲)[1] l'è 'n ogèt transnetünià de dimensiù piö o méno pari a 2/3 de Plutone e che 'l gira entùren al Sul sönden òrbita 'n grant des•centràda che la 'l pórta a rià de le bànde del Sistéma Solar estèrno (76 UA) quan che l'è al pereéle e de slontanàs enfìna a rià a piö de 5 dé/luce (975 UA) quan che 'l rìa a l'aféle. Segónt i sò scupridùr el pödarès apartègner al nìgol de Oort perchè l'è tròp delóns per véser cunsideràt part de la fàsa de Kuiper, però sö chèsta enterpretasiù gh'è mìa tata concordànsa.



  1. U+2BF2 ⯲. David Faulks (2016) 'Eris and Sedna Symbols,' L2/16-173R, Unicode Technical Committee Document Register.
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Sedna
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