255 Oppavia

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255 Oppavia
Discovery
Discovered by Johann Palisa
Discovery date 31 March 1886
Designations
MPC designation (255) Oppavia
Named after
Opava
A904 EC, A924 TA,
1938 VC, 1938 XC,
1945 GD, 1951 SG
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 129.86 yr (47431 d)
Aphelion 2.95866 AU (442.609 Gm)
Perihelion 2.53342 AU (378.994 Gm)
2.74604 AU (410.802 Gm)
Eccentricity 0.077427
4.55 yr (1662.1 d)
17.98 km/s
261.139°
0° 12m 59.735s / day
Inclination 9.47209°
13.6708°
156.011°
Earth MOID 1.5404 AU (230.44 Gm)
Jupiter MOID 2.00916 AU (300.566 Gm)
Jupiter Tisserand parameter 3.324
Physical characteristics
Dimensions 57.40±1.5 km
Mass unknown
Mean density
unknown
Equatorial surface gravity
unknown
Equatorial escape velocity
unknown
19.499 h (0.8125 d)
0.0374±0.002
Temperature unknown
P
10.39

255 Oppavia is a sizeable Main belt asteroid. It classified as a dark P-type asteroid.

It was discovered by Johann Palisa on 31 March 1886 in Vienna and was named after Opava, a town in the Czech Republic, then part of Austria-Hungary, where Palisa was born.

Oppavia was long thought to be a member of the now defunct Ceres asteroid family, but was found to be an unrelated interloper on the basis of its non-matching spectral type.

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