91 Aegina

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91 Aegina
Discovery
Discovered by Édouard Stephan
Discovery date November 4, 1866
Designations
Named after
Aegina
 
Minor planet category Main belt
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 428.453 Gm (2.864 AU)
Perihelion 346.826 Gm (2.318 AU)
387.640 Gm (2.591 AU)
Eccentricity 0.105
1523.536 d (4.17 a)
18.45 km/s
183.458°
Inclination 2.109°
10.806°
73.371°
Physical characteristics
Dimensions 109.8 km
Mass 1.4×1018 kg
Mean density
? g/cm³
0.0307 m/s²
0.0580 km/s
? d
Albedo 0.043 [1]
Temperature ~173 K
Spectral type
C
8.84

91 Aegina (/ɨˈnə/ i-JY-nə) is a large main-belt asteroid. Its surface coloring is very dark and the asteroid has probably a primitive carbonaceous composition. It was discovered by a French astronomer Édouard Jean-Marie Stephan on November 4, 1866. It was his second and final asteroid discovery. The first was 89 Julia. The asteroid's name comes from Aegina, a Greek mythological figure associated with the island of the same name.

References[edit]

  1. ^ Asteroid Data Sets