393 Lampetia

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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)
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[edit]

  1. ^ Yeomans, Donald K., "393 Lampetia", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-25. 
  2. ^ 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 37: 133–141, Bibcode:1979Icar...37..133S, doi:10.1016/0019-1035(79)90121-0. 
  3. ^ Magri, Christopher et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003", Icarus 186 (1): 126–151, Bibcode:2007Icar..186..126M, doi:10.1016/j.icarus.2006.08.018, retrieved 2015-04-14.