144 Vibilia
| Discovery[1] | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | June 3, 1875 |
| Designations | |
| Main belt | |
| Orbital characteristics[1][2] | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 490.632 Gm (3.280 AU) |
| Perihelion | 303.539 Gm (2.029 AU) |
| 397.086 Gm (2.654 AU) | |
| Eccentricity | 0.236 |
| 1579.562 d (4.32 a) | |
|
Average orbital speed
|
18.03 km/s |
| 62.957° | |
| Inclination | 4.808° |
| 76.487° | |
| 293.646° | |
| Physical characteristics | |
| Dimensions | 141.34±2.76 km[2] |
| Mass | (5.30±1.20)×1018 kg[2] |
|
Mean density
|
3.58±0.84 g/cm3[2] |
|
Equatorial surface gravity
|
0.0396 m/s² |
|
Equatorial escape velocity
|
0.0750 km/s |
| 0.10 | |
| Temperature | ~171 K |
| C | |
| 9.97 (brightest) | |
| 7.91 | |
144 Vibilia is a large, dark main belt asteroid that was discovered by C. H. F. Peters on June 3, 1875, from the observatory at Hamilton College, Clinton, New York. Peters named it after Vibilia, the Roman goddess of traveling, because he had recently returned from a journey across the world to observe the transit of Venus. Peters also discovered 145 Adeona on the same night.[3]
Based upon its spectrum, this object is classified as a C-type asteroid. This means it probably has a primitive carbonaceous composition. It is the only large member of the Vibilia asteroid family.[citation needed]
Vibilia has been observed to occult a star twice so far (in 1993 and again in 2001).[citation needed]
13-cm radar observations of this asteroid from the Arecibo Observatory between 1980 and 1985 were used to produce a diameter estimate of 131 km.[4] Based upon radar data, the near surface solid density of the asteroid is 2.4+0.7
−0.5 g cm−3.[5]
References
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- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found. See Table 1.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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External links
- Orbital simulation from JPL (Java)
- Ephemeris
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