174 Fedra
| Odkritje | |
|---|---|
| Odkritelj | J. C. Watson |
| Datum odkritja | 2. september 1877 [1] |
| Oznake | |
| asteroidni pas | |
| Značilnosti tira[2] | |
| Epoha: 30. november 2008 (JD 2454800,5) | |
| Odsončje | 3,274 a.e. |
| Prisončje | 2,442 a.e. |
| 2,858 a.e. | |
| Izsrednost | 0,145 |
| 1764,878 dni (4,83 let) | |
| 119,818° | |
| Naklon tira | 12,132 ° |
| 237,744° | |
| 289,468° | |
| Fizikalne značilnosti | |
| Razsežnosti | 69,24 km |
| 5,744 h | |
| Albedo | 0,1495 geometrični [2] |
Spektralni tip | S (po Tholenu in SMASS) [2] |
| 8,48 | |
174 Fedra (mednarodno ime 174 Phaedra) je velik asteroid tipa S v glavnem asteroidnem pasu.
Odkritje
Asteroid je odkril kanadsko-ameriški astronom James Craig Watson (1845 – 1904) 2. septembra 1877 [1]. Ime je dobil po kraljici Fedri iz grške mitologije.
Lastnosti
Asteroid Fedra obkroži Sonce v 4,83 letih. Njegova tirnica ima izsrednost 0,145, nagnjena pa je za 12,132° proti ekliptiki. Njegov premer je 69,24 km, okoli svoje osi pa se zavrti v 5,744 h [2]. Svetlobne krivulje asteroida kažejo, da ima precej nepravilno ali podolgovato obliko.
Reference in opombe
Zunanje povezave
- Simulacija tirnice (angleško)
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