393 Lampetia
Appearance
Orbital diagram | |
Discovery | |
---|---|
Discovered by | Max Wolf |
Discovery date | 4 November 1894 |
Designations | |
(393) Lampetia | |
Pronunciation | /læmˈpiːʃiə/[1][2] |
Named after | Lampetia |
1894 BG | |
Main belt | |
Symbol | |
Orbital characteristics[3] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.56 yr (41112 d) |
Aphelion | 3.6980 AU (553.21 Gm) |
Perihelion | 1.8568 AU (277.77 Gm) |
2.7774 AU (415.49 Gm) | |
Eccentricity | 0.33146 |
4.63 yr (1690.6 d) (4.63 yr) | |
173.245° | |
0° 12m 46.584s / day | |
Inclination | 14.879° |
212.460° | |
2023-Aug-15 | |
90.824° | |
Physical characteristics | |
Dimensions | 96.89±31.4 km |
38.7 h (1.61 d)[3][4] | |
0.0829±0.099 | |
8.39 | |
393 Lampetia is a fairly large main belt asteroid that was discovered by German astronomer Max Wolf on 4 November 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.[4]
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.[5]
It comes to opposition at apparent magnitude 10.5 on 6 July 2023[6] and then perihelion on 15 August 2023.[3]
References
[edit]- ^ James Knowles (1851) A Critical Pronouncing Dictionary of the English Language
- ^ Joseph Thomas (1908) Universal Pronouncing Dictionary of Biography and Mythology
- ^ a b c "393 Lampetia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 10 May 2016.
- ^ 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 14 April 2015.
- ^ JPL Horizons (Opposition)
External links
[edit]- 393 Lampetia at AstDyS-2, Asteroids—Dynamic Site
- 393 Lampetia at the JPL Small-Body Database