18 Melpomene

18 Melpomene 18 Melpomene symbol.svg
A601.M993.shape.png
Three-dimensional model of 18 Melpomene created using light-curve inversions
Discovery
Discovered by John Russell Hind
Discovery date June 24, 1852
Designations
MPC designation (18) Melpomene
Pronunciation / mel-POM-i-nee
Named after
Melpomenē
Main belt
Orbital characteristics [1]
Epoch October 22, 2004 ( JD 2453300.5)
Aphelion 418.414 Gm (2.797 AU)
Perihelion 268.472 Gm (1.795 AU)
343.443 Gm (2.296  AU)
Eccentricity 0.218
1270.552 d (3.48 a)
205.245°
Inclination 10.126°
150.547°
227.975°
Physical characteristics
Dimensions 170 × 155 × 129 km [2]
(150×125 km) [3]
(150×170 km) [4]
140.6 ± 2.8 km ( IRAS) [1]
Mass 3.0×1018 kg [2]
Mean density
1.69±0.66 g/cm3 [2]
0.482 21 d (11.57 h) [1] [5]
0.223 [1] [6]
S [1]
7.5 [7] to 12.0
6.51 [1]
0.23" to 0.059"

18 Melpomene is a large, bright main-belt asteroid that was discovered by J. R. Hind on June 24, 1852, [8] and named after Melpomenē, the Muse of tragedy in Greek mythology. It is classified as an S-type asteroid and is composed of silicates and metals.

Melpomene occulted the star SAO 114159 on December 11, 1978. A possible Melpomenean satellite with a diameter at least 37 km was detected. The satellite candidate received a provisional designation S/1978 (18) 1. [9] In 1988 a search for satellites or dust orbiting this asteroid was performed using the UH88 telescope at the Mauna Kea Observatories, but the effort came up empty. [10] Melpomene was observed with the Hubble Space Telescope in 1993. It was able to resolve the asteroid's slightly elongated shape, but no satellites were detected. [3]

Melpomene has been studied by radar. [11]

References

  1. ^ a b c d e f Yeomans, Donald K., "18 Melpomene", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 2013-04-07. 
  2. ^ a b c Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Retrieved 2008-11-27. 
  3. ^ a b Storrs, Alex; Weiss; Zellner; Burlsen; et al. (1999). "Imaging Observations of Asteroids with Hubble Space Telescope" (PDF). Icarus. 137 (2): 260–268. 1999Icar..137..260S. the original (PDF) on 30 October 2008. Retrieved 2008-11-03. 
  4. ^ Storrs, Alex; Dunne; Conan; Mugnier; et al. (2005). "A closer look at main belt asteroids 1: WF/PC images" (PDF). Icarus. 173 (2): 409–416. 2005Icar..173..409S. 10.1016/j.icarus.2004.08.007. Retrieved 2008-11-26. 
  5. ^ "Lightcurves and Map Data on Numbered Asteroids N° 1 TO 52225". AstroSurf. Archived from the original on 2005-11-27. Retrieved 2008-11-03. 
  6. ^ "Asteroid Data Archive". Planetary Science Institute. Archived from the original on 2006-06-23. Retrieved 2008-11-03. 
  7. ^ Menzel, Donald H.; Pasachoff, Jay M. (1983). A Field Guide to the Stars and Planets (2nd ed.). Boston, MA: Houghton Mifflin. p. 391. ISBN  0-395-34835-8. 
  8. ^ "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, retrieved 2013-04-07. 
  9. ^ IAUC 3315: 1978 (18) 1; WZ Sge, Central Bureau for Astronomical Telegrams, retrieved 2011-07-05. 
  10. ^ Gradie, J.; Flynn, L. (March 1988), "A Search for Satellites and Dust Belts Around Asteroids: Negative Results", Abstracts of the Lunar and Planetary Science Conference, 19, pp. 405–406, 1988LPI....19..405G. 
  11. ^ Radar-Detected Asteroids and Comets, NASA/JPL Asteroid Radar Research, retrieved 2011-10-30. 
Other Languages
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Ελληνικά: 18 Μελπομένη
español: (18) Melpomene
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فارسی: ملپومن ۱۸
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مازِرونی: سیارک ۱۸
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português: 18 Melpómene
română: 18 Melpomene
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српски / srpski: 18 Мелпомена
srpskohrvatski / српскохрватски: 18 Melpomene
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粵語: 司曲星
中文: 司曲星