Phobos
natural satellite of Mars
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Summary
Phobos is a moon of Mars[1]. Phobos draws 17,513 Wikipedia views per month (moon of mars category, ranking #1 of 2).[2]
Key Facts
- Discoverer or inventor: Asaph Hall[3]
- Site of astronomical discovery: United States Naval Observatory[4]
- Named after: Phobos[5]
- Commons category: Phobos (moon)[6]
- Parent astronomical body: Mars[7]
- Time of discovery or invention: August 18, 1877[8], August 17, 1877[9]
- IPA transcription: ˈfoːbɔs[10]
- Topic's main category: Category:Phobos (moon)[11]
- Commons gallery: Phobos[12]
- Orbital eccentricity: 0.0151[13]
- Apparent magnitude: 11.8[14]
- Described by source: Otto's encyclopedia[15]
- Topic has template: Template:GeoTemplate/phobos[16]
- Orbital inclination: 26.04 degree[17]
- Density: 1.876 gram per cubic centimetre[18]
- Mass: 10.66 exagram[19]
- Orbital period: 0.3189 day[20]
- Semi-major axis of an orbit: 9377.1 km[21]
- Volume as quantity: 5695 cubic kilometre[22]
- Apoapsis: 9517.58 km[23]
- Periapsis: 9234.42 km[24]
- Diameter: 22.5 km[25]
- Albedo: 0.071[26]
- On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[27]
- Surface gravity: 0.0057 metres per second squared[28]
Body
Influence
Things named for Phobos include Phobos Ridge[29], a ridge[30].
Why It Matters
Phobos has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[31] Phobos is known by 29 alternative names across languages and contexts.[32]
Entities named for Phobos include Phobos Ridge[29], a ridge[30].