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1 References  





2 External links  














381 Myrrha






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381 Myrrha
381 Myrrha photographed in the constellation of Leo, with Messier 65, Messier 66 and NGC 3628 nearby
Discovery
Discovered byAuguste Charlois
Discovery date10 January 1894
Designations

MPC designation

(381) Myrrha
Pronunciation/ˈmɪrə, ˈmɜːrə/

Named after

Myrrha

Alternative designations

1894 AS

Minor planet category

Main belt
SymbolSymbol for Myrrha: a woman turned into a tree, with tears / drops of myrrh
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc122.27 yr (44658 d)
Aphelion3.5124 AU (525.45 Gm)
Perihelion2.93357 AU (438.856 Gm)

Semi-major axis

3.22298 AU (482.151 Gm)
Eccentricity0.089797

Orbital period (sidereal)

5.79 yr (2113.4 d)

Mean anomaly

350.739°

Mean motion

0° 10m 13.224s / day
Inclination12.558°

Longitude of ascending node

125.102°

Argument of perihelion

142.930°
Physical characteristics
Dimensions120.58±2.7 km[1]
147.2×126.6 km
123.41 ± 6.30 km[2]
Mass(9.18 ± 0.80) × 1018kg[2]

Mean density

9.32 ± 1.64 g/cm3[2]

Synodic rotation period

6.572 h (0.2738 d)

Geometric albedo

0.0609±0.003

Spectral type

C

Absolute magnitude (H)

8.25

Myrrha (minor planet designation: 381 Myrrha) is a main-belt asteroid that was discovered by the French astronomer Auguste Charlois on January 10, 1894, in Nice.[3] It has been classified as a C-type asteroid and is most likely composed of carbonaceous material.

Photometric observations of this asteroid at the Oakley Observatory in Terre Haute, Indiana during 2006 gave a light curve with a period of 6.572 ± 0.002 hours and a brightness variation of 0.34 ± 0.05 in magnitude.[4]

10μ radiometric data collected from Kitt Peak in 1975 gave a diameter estimate of 126 km.[5] The occultationofAlhenaGeminorum) by Myrrha was observed in Japan and China on January 13, 1991, allowing the size and shape of Myrrha to be properly clarified.

References

[edit]
  1. ^ a b Yeomans, Donald K., "381 Myrrha", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 10 May 2016.
  • ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
  • ^ "Numbered Minor Planets 1–5000", Discovery Circumstances, IAU Minor Planet center, retrieved 7 April 2013.
  • ^ Ditteon, Richard; Hawkins, Scot (September 2007), "Asteroid Lightcurve Analysis at the Oakley Observatory - October-November 2006", The Minor Planet Bulletin, vol. 34, no. 3, pp. 59–64, Bibcode:2007MPBu...34...59D.
  • ^ Morrison, D.; Chapman, C. R. (March 1976), "Radiometric diameters for an additional 22 asteroids", Astrophysical Journal, vol. 204, pp. 934–939, Bibcode:2008mgm..conf.2594S, doi:10.1142/9789812834300_0469, ISBN 978-981-283-426-3.
  • [edit]


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  • Retrieved from "https://en.wikipedia.org/w/index.php?title=381_Myrrha&oldid=1210381596"

    Categories: 
    Minor planet object articles (numbered)
    Background asteroids
    Discoveries by Auguste Charlois
    Named minor planets
    C-type asteroids (Tholen)
    Cb-type asteroids (SMASS)
    Astronomical objects discovered in 1894
    C-type main-belt-asteroid stubs
    Hidden categories: 
    Articles with short description
    Short description is different from Wikidata
    Use dmy dates from October 2019
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    All stub articles
     



    This page was last edited on 26 February 2024, at 09:47 (UTC).

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