Phobos (muin)

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Phobos
Phobos
Enhanced-colour image o Phobos—Stickney crater is on the richt (MRO, 23 Mairch 2008).
Image: NASA/JPL/Varsity o Arizona
Discovery
Discovered bi Asaph Hall
Discovery date 18 August 1877
Designations
Mars I
Adjectives Phobian
Orbital chairactereestics
Epoch J2000
Periapsis 9234.42 km[1]
Apoapsis 9517.58 km[1]
9376 km[1]
Eccentricity 0.0151[1]
0.31891023 d
(7 h 39.2 min)
2.138 km/s[1]
Inclination 1.093° (tae Mars's equator)
0.046° (tae local Laplace plane)
26.04° (tae the ecliptic)
Satellite o Maurs
Pheesical chairacteristics
Dimensions 27 × 22 × 18 km[1]
Mean radius
11.2667 km
(1.76941 mYirds)
1548.3 km2[1]
(3.03545 µYirds)
Vollum 5783.61 km3
(5.33933 nYirds)
Mass 1.0659×1016 kg[1]
(1.78477 nEarths)
Mean density
1.876 g/cm3[1]
0.0057 m/s2[1]
(581.4 µg)
11.39 m/s
(41 km/h)[1]
Synchronous
Equatorial rotation velocity
11.0 km/h (6.8 mph) (at langest axis)
Albedo 0.071[2]
Temperatur ≈ 233 K
11.3[3]

Phobos (seestematic designation: Mars I) is the lairger an closer o the twa naitural satellites o Maurs. Baith muins wur discovered in 1877.

References[eedit | eedit soorce]

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Mars: Moons: Phobos". NASA Solar System Exploration. 30 September 2003. Retrieved 2 December 2013. 
  2. "Planetary Satellite Physical Parameters". JPL (Solar System Dynamics). 13 Julie 2006. Retrieved 29 Januar 2008. 
  3. "Classic Satellites of the Solar System". Observatorio ARVAL. Retrieved 28 September 2007.