95 Arethusa

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95 Arethusa
95Arethusa (Lightcurve Inversion).png
A three-dimensional model of 95 Arethusa based on its light curve.
Discovery
Discovered by Karl Theodor Robert Luther
Discovery date November 23, 1867
Designations
Alternative names  
Minor planet category Main belt
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 527.303 Gm (3.525 AU)
Perihelion 390.547 Gm (2.611 AU)
Semi-major axis 458.925 Gm (3.068 AU)
Eccentricity 0.149
Orbital period 1962.561 d (5.37 a)
Average orbital speed 16.91 km/s
Mean anomaly 326.964°
Inclination 12.998°
Longitude of ascending node 243.148°
Argument of perihelion 155.023°
Physical characteristics
Dimensions 136.04 km
147 ± 32 km[1]
Mass 2.6×1018 kg
Mean density ? g/cm³
Equatorial surface gravity 0.0380 m/s²
Escape velocity 0.0719 km/s
Rotation period ? d
Albedo 0.070 [2]
Temperature ~159 K
Spectral type C
Absolute magnitude (H) 7.84

95 Arethusa (/ˌærɨˈθjzə/ ARR-ə-THEW-zə) is a large main-belt asteroid. Its coloring is dark, its composition carbonaceous and primitive. It was discovered by Robert Luther on November 23, 1867, and named after one of the various Arethusas in Greek mythology. Arethusa has been observed occulting a star three times: first on February 2, 1998, and twice in January 2003.

References[edit]

  1. ^ Ďurech, Josef; Kaasalainen, Mikko; Herald, David; Dunham, David; Timerson, Brad; Hanuš, Josef; Frappa, Eric; Talbot, John; Hayamizu, Tsutomu; Warner, Brian D.; Pilcher, Frederick; Galád, Adrián (2011). "Combining asteroid models derived by lightcurve inversion with asteroidal occultation silhouettes". Icarus 214 (2): 652–670. arXiv:1104.4227. Bibcode:2011Icar..214..652D. doi:10.1016/j.icarus.2011.03.016. 
  2. ^ Asteroid Data Sets

External links[edit]