Muin Deimos
Deimos (seestematic designation: Maurs II) is the smawer an ootermair o the twa naitural satellites o the planet Mars wi a mean radius o 6.2 km, the ither bein Phobos.
 An enhanced-colour image o Deimos (MRO, 21 Februar 2009). Image: NASA/JPL-Caltech/Varsity o Arizona | |
| Discovery | |
|---|---|
| Discovered bi | Asaph Hall |
| Discovery date | 12 August 1877 |
| Designations | |
| Adjectives | Deimosian |
| Orbital chairactereestics | |
| Epoch 2012-Sep-21 (JD 2456191.5) | |
| Periapsis | 23455.5 km |
| Apoapsis | 23470.9 km |
| 23463.2 km | |
| Eccentricity | 0.00033 |
Orbital period | 1.263 d (30.312 h) |
Average orbital speed | 1.3513 km/s |
| Inclination | 0.93° (tae Maurs's equator) 1.791° (tae the local Laplace plane) 27.58° (to the ecliptic) |
| Satellite o | Maurs |
| Pheesical chairacteristics | |
| Dimensions | 15 × 12.2 × 11 km |
Mean radius | 6.2 ± 0.18 km (0.97316 mEarths) |
Surface area | 495.1548 km2 (97.0755 µEarths) |
| Vollum | 999.78 km3 (92.2979 nEarths) |
| Mass | 1.4762×1015 kg (24.7179 nEarths) |
Mean density | 1.471±0.166 g/cm3 |
Surface gravity | 0.003 m/s2 (306 µg) |
Escape velocity | 5.556 m/s (20 km/h) |
| Synchronous | |
| Albedo | 0.068 ± 0.007 |
| Temperatur | ≈ 233 K |
Apparent magnitude | 12.45 ± 0.05 |
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References
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