144 Vibilia
| Discovery[1] | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | 3 June 1875 |
| Designations | |
| Main belt | |
| Orbital characteristics[2][3] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.90 yr (40506 d) |
| Aphelion | 3.28006 AU (490.690 Gm) |
| Perihelion | 2.03462 AU (304.375 Gm) |
| 2.65734 AU (397.532 Gm) | |
| Eccentricity | 0.23434 |
| 4.33 yr (1582.2 d) | |
Average orbital speed | 18.03 km/s |
| 140.636° | |
| 0° 13m 39.097s / day | |
| Inclination | 4.80546° |
| 76.3737° | |
| 293.751° | |
| Earth MOID | 1.03906 AU (155.441 Gm) |
| Jupiter MOID | 2.18776 AU (327.284 Gm) |
| Jupiter Tisserand parameter | 3.343 |
| Physical characteristics | |
| Dimensions |
142.38±2.6 km[2] 141.34±2.76 km[4] |
| Mass | (5.30±1.20)×1018 kg[4] |
Mean density | 3.58±0.84 g/cm3[4] |
Equatorial surface gravity | 0.0396 m/s² |
Equatorial escape velocity | 0.0750 km/s |
| 13.819 h (0.5758 d) | |
| 0.0597±0.002 | |
| 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.[5]
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.
Vibilia has been observed to occult a star twice so far (in 1993 and again in 2001).
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.[6] Based upon radar data, the near surface solid density of the asteroid is 2.4+0.7
−0.5 g cm−3.[7]
References
- ↑
- 1 2 Yeomans, Donald K., "144 Vibilia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- ↑ "The Asteroid Orbital Elements Database". astorb. Lowell Observatory.
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336
, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1. - ↑ Schmadel, Lutz D. (2003), Dictionary of Minor Planet Names (5th ed.), Springer, p. 63, ISBN 3540002383.
- ↑ Ostro, S. J.; et al. (August 1985), "Mainbelt asteroids - Dual-polarization radar observations", Science, 229 (4712), pp. 442–446, Bibcode:1985Sci...229..442O, doi:10.1126/science.229.4712.442, PMID 17738665.
- ↑ Magri, C.; et al. (December 2001), "Radar constraints on asteroid regolith compositions using 433 Eros as ground truth", Meteoritics & Planetary Science, 36 (12), pp. 1697–1709, Bibcode:2001M&PS...36.1697M, doi:10.1111/j.1945-5100.2001.tb01857.x.
External links
- Orbital simulation from JPL (Java)
- Ephemeris
- 144 Vibilia at the JPL Small-Body Database
