239 Adrastea

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239 Adrastea
Discovery
Discovered by Johann Palisa
Discovery date 18 August 1884
Designations
MPC designation (239) Adrastea
Named after
Adrasteia
A915 TD, 1955 MK1,
1956 UJ
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 131.66 yr (48087 d)
Aphelion 3.66279 AU (547.946 Gm)
Perihelion 2.2695 AU (339.51 Gm)
2.96616 AU (443.731 Gm)
Eccentricity 0.23486
5.11 yr (1865.9 d)
17.25 km/s
233.617°
0° 11m 34.584s / day
Inclination 6.1746°
180.634°
210.15°
Physical characteristics
Dimensions 41.52±1.4 km[1]
18.4707 h (0.76961 d)[1]
0.0777±0.006[1]
Temperature unknown
unknown
10.4[1]

239 Adrastea is a main belt asteroid. It was discovered by Johann Palisa on 18 August 1884 in Vienna, it is named after the Greek nymph Adrasteia. The asteroid is roughly 42 km in diameter.[1]

References[edit]

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