Haumea_(planet_kerdil)
Dinamakan sempena | Haumea |
---|---|
Tempoh putaran ikut bintang | 7004140958144000000♠0.163146±0.000004 h (7004140958000000000♠3.9155±0.0001 h)[15] |
Designasi planet minor | (7005136108000000000♠136108) Haumea |
Dimensi | 2,322 × 1,704 × 1,138 km[7] 1,920 × 1,540 × 990 km[8] |
Min jejari | 7005816000000000000♠816 km[7] 7005620000000000000♠620+34 −29 km (Herschel)[9] 690 km[10] |
Perihelion | 7012522874477670639♠34.952 AU (5.229 Tm) |
Isi padu | 7018240000000000000♠2.4×109 km3[12] |
Satelit | 2 |
Paksi semimajor | 7012646532077591260♠43.218 AU (6.465 Tm) |
Sebutan | /haʊˈmeɪ.ə, ˌhɑːuː-/[nb 1] |
Min ketumpatan | 2.6 g/cm3[8][14] 1.885–1.757 g/cm3[7] |
Luas permukaan | ≈7012920000000000000♠9.2×106 km2[11] |
Kategori planet minor | Planet kerdil, plutoid[4][5][6] |
Suhu | < 50 K[16] |
Tarikh penemuan | 28 Disember 2004 (Brown et al.); Julai 2005 (Ortiz et al.) |
Magnitud mutlak (H) | 6999200000000000000♠0.2 [17] |
Graviti permukaan khatulistiwa | ≈0.402 m/s2 |
Argumen perihelion | 240.20° |
Albedo | 6999804000000000000♠0.804+0.062 −0.095 [9] 0.70–0.75 [14] 0.51 ± 0.02[7] |
Ditemui oleh | Brown et al.; Ortiz et al. |
Halaju lepas | ≈0.809 km/s |
Afelion | 7012770174717724810♠51.483 AU (7.702 Tm) |
Jisim | 7021400600000000000♠(4.006±0.040)×1021 kg[13] 6996660000000000000♠0.00066 Bumi |