|Discovered by||James Craig Watson|
|Discovery date||13 September 1868|
|Epoch 31 July 2016 (JD 2457600.5)|
|Uncertainty parameter 0|
|Observation arc||130.58 yr (47693 d)|
|Aphelion||3.6499 AU (546.02 Gm)|
|Perihelion||2.65525 AU (397.220 Gm)|
|3.15256 AU (471.616 Gm)|
|5.60 yr (2044.5 d)|
Average orbital speed
|0° 10m 33.888s / day|
|Earth MOID||1.66901 AU (249.680 Gm)|
|Jupiter MOID||1.63907 AU (245.201 Gm)|
|Jupiter Tisserand parameter||3.186|
Equatorial surface gravity
Equatorial escape velocity
|8.984 h (0.3743 d)|
104 Klymene is a large, dark Themistian asteroid that was discovered by J. C. Watson on September 13, 1868, and named after one of the many Clymenes in Greek mythology. It is classified as a C-type asteroid, indicating it probably has a carbonaceous composition. The spectra indicates the presence of aqueous-altered minerals on the surface.
Based upon measurements made using adaptive optics at the W. 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. This asteroid is a member of the Themis family of asteroids that share similar orbital elements. It is listed as a member of the Hecuba group of asteroids that orbit near the 2:1 mean-motion resonance with Jupiter.
- Yeomans, Donald K., "104 Klymene", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- Dictionary of minor planet names. p. 25. International Astronomical Union. 2003. Springer
- 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.
- Marchis, F.; et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey", Icarus, 185 (1), pp. 39–63, Bibcode:2006Icar..185...39M, doi:10.1016/j.icarus.2006.06.001, PMC , PMID 19081813.
- 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.
- McDonald, Sophia Levy (June 1948), "General perturbations and mean elements, with representations of 35 minor planets of the Hecuba group", Astronomical Journal, 53, p. 199, Bibcode:1948AJ.....53..199M, doi:10.1086/106097.
- 104 Klymene at the JPL Small-Body Database
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