Phobos_(bulan)
Dinamakan sempena | Φόβος (Phobos) |
---|---|
Min jejari | 7004112667000000000♠11.2667 km (7000176941000000000♠1.76941 mBumi) |
Halaju putaran khatulistiwa | 11.0 km/h (6.8 mph) (di paksi terpanjang) |
Graviti permukaan khatulistiwa | 6997570000000000000♠0.0057 m/s2[5] (581.4 µ g) |
Kecondongan | 1.093° (mengikut khatulistiwa Marikh) 0.046° (mengikut satah Laplace) 26.04° (mengikut ekliptik) |
Kelajuan purata orbit | 2.138 km/s[5] |
Albedo | 0.071±0.012[6] |
Ditemui oleh | Asaph Hall |
Apoapsis | 7006951758000000000♠9517.58 km[5] |
Jisim | 7016106590000000000♠1.0659×1016 kg[5] (7000178477000000000♠1.78477 nBumi) |
Dimensi | 27 × 22 × 18 km[5] |
Isi padu | 7012578361000000000♠5783.61 km3 (7000533933000000000♠5.33933 nBumi) |
Sebutan | /ˈfoʊbɒs/[1] or /ˈfoʊbəs/[2] |
Min ketumpatan | 7003187600000000000♠1.876 g/cm3[5] |
Paksi semimajor | 7006937600000000000♠9376 km[5] (2.76 jejari Marikh) |
Tempoh orbit | 7004275538438720000♠0.31891023 h (7 jam 39.2 minit) |
Luas permukaan | 7009154830000000000♠1548.3 km2[5] (3.03545 µBumi) |
Magnitud ketara | 11.8[7] |
Tarikh penemuan | 18 Ogos 1877 |
Kecondongan paksi | 0° |
Kesipian | 6998151000000000000♠0.0151[5] |
Halaju lepas | 11.39 m/s (41 km/h)[5] |
Adjektif | 'Phobian[3] /ˈfoʊbiən/[4] |
Periapsis | 7006923442000000000♠9234.42 km[5] |
Satelit bagi | Marikh |
Tempoh putaran | Segerak |