18 Melpomene

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18 Melpomene 18 Melpomene symbol.svg
Discovery
Discovered biJohn Russell Hind
Discovery dateJune 24, 1852
Designations
Pronunciation/mɛlˈpɒmn/ mel-POM-i-nee
Named after
Melpomenē
Main belt
Orbital chairactereestics[1]
Epoch October 22, 2004 (JD 2453300.5)
Aphelion418.414 Gm (2.797 AU)
Perihelion268.472 Gm (1.795 AU)
343.443 Gm (2.296 AU)
Eccentricity0.218
1270.552 d (3.48 a)
19.42 km/s
205.245°
Inclination10.126°
150.547°
227.975°
Pheesical chairacteristics
Dimensions170 x 155 x 129 km[2]
(150×125 km)[3]
(150×170 km)[4]
140.6 ± 2.8 km (IRAS)[1]
Mass3.0×1018 kg[2]
Mean density
1.69±0.66 g/cm3[2]
~0.0393 m/s2
~0.0743 km/s
0.482 21 d (11.57 h)[1][5]
Albedo0.223 (geometric[1][6]
Temperatur~177 K
Spectral teep
S[1]
7.5[7] tae 12.0
6.51[1]
0.23" tae 0.059"

18 Melpomene is a lairge, bricht main-belt asteroid that wis discovered bi J. R. Hind on Juin 24, 1852,[8] an named efter Melpomenē, the Muse o tragedy in Greek meethology.

References[eedit | eedit soorce]

  1. a b c d e f Yeomans, Donald K., "18 Melpomene", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 Apryle 2013.
  2. a b c Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Archived frae the original on 21 October 2013. Retrieved 27 November 2008.
  3. Storrs, Alex; Weiss; Zellner; Burlsen; et al. (1999). "Imaging Observations of Asteroids with Hubble Space Telescope" (PDF). Icarus. 137 (2): 260–268. Bibcode:1999Icar..137..260S. doi:10.1006/icar.1999.6047. Archived (PDF) frae the original on 30 October 2008. Retrieved 3 November 2008. Unknown parameter |deadurl= ignored (help)
  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. Bibcode:2005Icar..173..409S. doi:10.1016/j.icarus.2004.08.007. Archived frae the original (PDF) on 10 Mairch 2012. Retrieved 26 November 2008.
  5. "Lightcurves and Map Data on Numbered Asteroids N° 1 TO 52225". AstroSurf. Archived frae the original on 27 November 2005. Retrieved 3 November 2008.Archived 2005-11-27 at the Wayback Machine
  6. "Asteroid Data Archive". Planetary Science Institute. Archived frae the original on 23 Juin 2006. Retrieved 3 November 2008.
  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 7 Apryle 2013.