97 Klotho

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97 Klotho
Discovery
Discovered by: Ernst Wilhelm Tempel
Discovery date: February 17, 1868
Alternative names:  
Minor planet category: Main belt
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion distance: 501.752 Gm (3.354 AU)
Perihelion distance: 296.593 Gm (1.983 AU)
Semi-major axis: 399.173 Gm (2.668 AU)
Eccentricity: 0.257
Orbital period: 1592.030 d (4.36 a)
Avg. orbital speed: 17.93 km/s
Mean anomaly: 14.314°
Inclination: 11.783°
Longitude of ascending node: 159.776°
Argument of perihelion: 268.671°
Physical characteristics
Dimensions: 82.8 km
Mass: 5.9×1017 kg
Mean density: ? g/cm³
Equatorial surface gravity: 0.0231 m/s²
Escape velocity: 0.0438 km/s
Rotation period: ? d
Albedo: 0.229 [1]
Temperature: ~170 K
Spectral type: M
Absolute magnitude: 7.63

97 Klotho (kloh'-thoh) is a fairly large main belt asteroid. While it is an M-type, its radar albedo is too low to allow a nickel-iron composition. Klotho is similar to 21 Lutetia and 22 Kalliope in that all three are M-types of unknown composition. Klotho was found by Ernst Tempel on February 17, 1868. It was his fifth and final asteroid discovery. It is named after one of the three Moirae, or Fates, in Greek mythology.

[edit] References

  1. ^ http://www.psi.edu/pds/resource/albedo.html
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