144 Vibilia

144 Vibilia
Discovery [1]
Discovered byC. H. F. Peters
Discovery siteLitchfield Obs.
Discovery date3 June 1875
Designations
MPC designation(144) Vibilia
Pronunciationə/
Named after
Vibilia
(Roman goddess of traveling)[2]
main-belt · Vibilia [3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Aphelion3.2796 AU
Perihelion2.0350 AU
2.6573 AU
Eccentricity0.2342
4.33 yr (1,582 days)
230.96°
0° 13m 39s / day
Inclination4.8123°
76.204°
294.36°
Physical characteristics
Dimensions131.36±33.30 km[4]
134.59±50.58 km[5]
141.34±2.76 km[6]
142.20±1.76 km[7]
142.38±2.6 km (IRAS:15)[8]
Mass(5.30±1.20)×1018 kg[6]
Mean density
2.4+0.7
−0.5
g/cm3[9]
3.58±0.84 g/cm3[6]
13.810 h[10]
13.819±0.002 h[11]
13.824±0.001 h[12]
13.82516±0.00005 h[13]
13.88±0.02 h[12]
0.05±0.01[4]
0.05±0.06[5]
0.0597±0.002 (IRAS:15)[8]
0.060±0.002[7]
C (Tholen), Ch (SMASS)
C[14]
B–V = 0.727[1]
U–B = 0.402[1]
7.91[1][4][7][8] · 7.92±0.02[11][14][15] · 8.03±0.21[16] · 8.03[5]

Vibilia (minor planet designation: 144 Vibilia) is carbonaceous asteroid from the central region of the asteroid belt, approximately 140 kilometers in diameter. It was discovered on 3 June 1875, by German–American astronomer Christian Peters at Litchfield Observatory of the Hamilton College in Clinton, New York, United States.[17] It is named after the Roman goddess of traveling Vibilia.[2]

Orbit and classification

Vibilia is the largest member and namesake of the Vibilia family, a small asteroid family with 180 known members.[3][18]:23 It orbits the Sun in the central main-belt at a distance of 2.0–3.3 AU once every 4 years and 4 months (1,582 days). Its orbit has an eccentricity of 0.23 and an inclination of 5° with respect to the ecliptic.[1] The asteroid's observation arc begins in May 1905, at Heidelberg Observatory, 30 years after its official discovery observation. It never received a provisional designation.[17]

144 Vibilia has been observed to occult a "Occult v4.5.5". Retrieved 2018-09-15.

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粵語: 旅神星
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