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104 Klymene

From Wikipedia, the free encyclopedia
Main-belt asteroid

104 Klymene
3D convex shape model of 104 Klymene
Discovery
Discovered byJames Craig Watson
Discovery date13 September 1868
Designations
(104) Klymene
Pronunciation/ˈklɪmɪniː/[1]
A868 RB, 1893 FA
1951 OE, 1968 OS[2]
Main belt
Orbital characteristics[3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc130.58 yr (47693 d)
Aphelion3.6499 AU (546.02 Gm)
Perihelion2.65525 AU (397.220 Gm)
3.15256 AU (471.616 Gm)
Eccentricity0.15775
5.60yr (2044.5d)
16.67 km/s
101.498°
0° 10m 33.888s / day
Inclination2.7905°
41.698°
32.134°
Earth MOID1.66901 AU (249.680 Gm)
Jupiter MOID1.63907 AU (245.201 Gm)
TJupiter3.186
Physical characteristics
Dimensions163 km × 103 km (±3 km × 5 km)[4]
136.553±1.554 km[3]
133 km[4]
Mass(1.835 ± 0.880/0.495)×1018 kg[5]
1.633 ± 0.783/0.441 g/cm3[5][a]
0.0263 m/s2
Equatorialescape velocity
0.0599 km/s
8.984 h (0.3743 d)[3]
0.052±0.006[3]
Temperature~157K
C
8.58[3]

104 Klymene is a large, darkThemistian asteroid that was discovered byJ. C. Watson on September 13, 1868, and named after one of the manyClymenes inGreek mythology.[6] It is orbiting theSun with aperiod of 5.60 years and aneccentricity of 0.16. Theorbital plane isinclined by 2.8° to theplane of the ecliptic. It is classified as aC-type asteroid, indicating it probably has acarbonaceous composition. The spectra indicates the presence of aqueous-altered minerals on the surface[7] based upon a sharp feature at a wavelength of 3 μm, and, as of 2015, is the only member of the Themis family found to show this absorption.[8]

Based upon measurements made usingadaptive optics at theW. M. Keck Observatory, this object may have a bi-lobed shape with a length of 163 ± 3 km and width of 103 ± 5 km, for an average dimension of 133 km.[4] This asteroid is located near the region of theThemis family but itself considered abackground asteroid usingHCM-analysis.[9] It is listed as a member of the Hecuba group of asteroids that orbit near the 2:1mean-motion resonance withJupiter.[10]

104 Klymene has been observed tooccult 6 stars between 2009 and 2023.

Notes

[edit]
  1. ^Assuming a diameter of 128.99 ± 3.8 km.

References

[edit]
  1. ^Noah Webster (1884)A Practical Dictionary of the English Language
  2. ^Bowen, Eliza A. (1893), "Visualizing the Earth's annual motion",Popular Astronomy,1:178–179,Bibcode:1893PA......1..178B.
  3. ^abcdeYeomans, Donald K.,"104 Klymene",JPL Small-Body Database Browser,NASA Jet Propulsion Laboratory, retrieved12 May 2016.
  4. ^abcMarchis, F.; et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey",Icarus, vol. 185, no. 1, pp. 39–63,Bibcode:2006Icar..185...39M,doi:10.1016/j.icarus.2006.06.001,PMC 2600456,PMID 19081813.
  5. ^abFienga, A.; Avdellidou, C.; Hanuš, J. (February 2020)."Asteroid masses obtained with INPOP planetary ephemerides".Monthly Notices of the Royal Astronomical Society.492 (1).doi:10.1093/mnras/stz3407.
  6. ^Dictionary of minor planet names, International Astronomical Union. Springer, 2003, p. 25
  7. ^Fornasier, S.; et al. (February 1999),"Spectroscopic comparison of aqueous altered asteroids with CM2 carbonaceous chondrite meteorites",Astronomy and Astrophysics Supplement Series,135 (1):65–73,Bibcode:1999A&AS..135...65F,doi:10.1051/aas:1999161.
  8. ^Hargrove, Kelsey D.; et al. (July 2015), "Asteroid (90) Antiope: Another icy member of the Themis family?",Icarus,254:150–156,Bibcode:2015Icar..254..150H,doi:10.1016/j.icarus.2015.03.008.
  9. ^Moore, Patrick; Rees, Robin, eds. (2011),"Patrick Moore's Data Book of Astronomy",Patrick Moore's Data Book of Astronomy by Patrick Moore and Robin Rees. Cambridge University Press (2nd ed.),Cambridge University Press: 165,Bibcode:2011pmdb.book.....M,ISBN 9781139495226.
  10. ^McDonald, Sophia Levy (June 1948),"General perturbations and mean elements, with representations of 35 minor planets of the Hecuba group",Astronomical Journal, vol. 53, p. 199,Bibcode:1948AJ.....53..199M,doi:10.1086/106097.

External links

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