104 Klymene

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
5.60 yr (2044.5 d)
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]
Mean density
1.633 ± 0.783/0.441 g/cm3[5][a]
Equatorial surface gravity
0.0263 m/s2
Equatorial escape velocity
0.0599 km/s
8.984 h (0.3743 d)[3]
0.052±0.006[3]
Temperature~157 K
C
8.58[3]

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.[6] It is orbiting the Sun with a period of 5.60 years and an eccentricity of 0.16. The orbital plane is inclined by 2.8° to the plane of the ecliptic. 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[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 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.[4] This asteroid is located near the region of the Themis family but itself considered a background asteroid using HCM-analysis.[9] It is listed as a member of the Hecuba group of asteroids that orbit near the 2:1 mean-motion resonance with Jupiter.[10]

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

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ Cite error: The named reference Bowen1893 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference JPL was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Marchis2006 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference FiengaEtAl2020 was invoked but never defined (see the help page).
  6. ^ Dictionary of minor planet names, International Astronomical Union. Springer, 2003, p. 25
  7. ^ Cite error: The named reference Fornasier1999 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Hargrove2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Moore2011 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference McDonald1948 was invoked but never defined (see the help page).


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