261 Prymno

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261 Prymno
Discovery
Discovered by C. H. F. Peters
Discovery date 31 October 1886
Designations
n/a
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 98.79 yr (36082 d)
Aphelion 2.54054 AU (380.059 Gm)
Perihelion 2.12336 AU (317.650 Gm)
2.33195 AU (348.855 Gm)
Eccentricity 0.089449
3.56 yr (1300.7 d)
19.51 km/s
35.7611°
0° 16m 36.386s / day
Inclination 3.63567°
96.6415°
65.9065°
Earth MOID 1.13358 AU (169.581 Gm)
Jupiter MOID 2.43829 AU (364.763 Gm)
Jupiter Tisserand parameter 3.562
Physical characteristics
Dimensions 50.93±1.3 km
Mass unknown
Mean density
unknown
Equatorial surface gravity
unknown
Equatorial escape velocity
unknown
8.002 h (0.3334 d)
0.1141±0.006
Temperature unknown
B
9.44

261 Prymno is a somewhat large Main belt asteroid. It is classified as a B-type asteroid and probably has a primitive composition not unlike common C-type carbonaceous asteroids.

It was discovered by C. H. F. Peters on October 31, 1886 in Clinton, New York and was named after the Greek Oceanid Prymno.

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