393 Lampetia

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393 Lampetia
Orbita asteroida 393.png
Orbital diagram
Discovery
Discovered by Max Wolf
Discovery date4 November 1894
Designations
(393) Lampetia
Pronunciation /læmˈpiːʃiə/ [1] [2]
Named after
 Lampetia
1894 BG
Main belt
Symbol Lampetia symbol (fixed width).svg
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

    1. ↑ James Knowles (1851) A Critical Pronouncing Dictionary of the English Language
    2. ↑ Joseph Thomas (1908) Universal Pronouncing Dictionary of Biography and Mythology
    3. 1 2 3 "393 Lampetia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory , retrieved 10 May 2016.
    4. 1 2 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.
    5. ↑ 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.
    6. ↑ JPL Horizons (Opposition)


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