239 Adrastea

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For the moon of Jupiter, see Adrastea (moon).
239 Adrastea
Discovery
Discovered by Johann Palisa
Discovery date 18 August 1884
Designations
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°
Earth MOID 1.27588 AU (190.869 Gm)
Jupiter MOID 1.78806 AU (267.490 Gm)
Jupiter Tisserand parameter 3.214
Physical characteristics
Dimensions 41.52±1.4 km[1]
Mass unknown
Mean density
unknown
Equatorial surface gravity
unknown
Equatorial escape velocity
unknown
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 August 18, 1884 in Vienna. It is named after the Greek nymph Adrasteia. The asteroid is roughly 42 km in diameter.[1]

References[edit]

  1. ^ a b c d e f "JPL Small-Body Database Browser: 239 Adrastea". Jet Propulsion Laboratory. Retrieved 12 May 2016. 

External links[edit]