393 Lampetia
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery date | November 4, 1894 |
| Designations | |
Named after | Lampetia |
| 1894 BG | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 3.699 AU |
| Perihelion | 1.859 AU |
| 2.779 AU | |
| Eccentricity | 0.331 |
| 1691.908 d (4.63 yr) | |
Average orbital speed | 17.87 km/s |
| 358.793° | |
| Inclination | 14.871° |
| 212.521° | |
| 91.055° | |
| Physical characteristics | |
| Dimensions | 97.0 km |
| 38.7[2] h | |
| 8.39 | |
393 Lampetia is a fairly large main belt asteroid that was discovered by German astronomer Max Wolf on November 4, 1894 in Heidelberg. It has an unusually low rotation rate, with a period estimated at 38.7 hours and a brightness variation of 0.14 in magnitude.[2]
In 2000, the asteroid was detected by radar from the Arecibo Observatory at a distance of 0.98 AU. The resulting data yielded an effective diameter of 125 ± 20 km.[3]
References
- ^ Yeomans, Donald K., "393 Lampetia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 2013-03-25.
- ^ a b Scaltriti, F.; Zappala, V.; Schober, H. J. (January 1979), "The rotations of 128 Nemesis and 393 Lampetia - The longest known periods to date", Icarus, vol. 37, pp. 133–141, Bibcode:1979Icar...37..133S, doi:10.1016/0019-1035(79)90121-0.
- ^ Magri, Christopher; et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003" (PDF), Icarus, 186 (1): 126–151, Bibcode:2007Icar..186..126M, doi:10.1016/j.icarus.2006.08.018, retrieved 2015-04-14.
External links
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