95 Arethusa
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Discovery | |
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Discovered by: | Karl Theodor Robert Luther |
Discovery date: | November 23, 1867 |
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) |
Avg. 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: | 136.0 km |
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 [1] |
Temperature: | ~159 K |
Spectral type: | C |
Absolute magnitude: | 7.84 |
95 Arethusa is a big main belt asteroid. Its coloring is dark, and it is made of carbonate. It was found by Robert Luther on November 23, 1867 and named after one of the various Arethusas in Greek mythology. Arethusa has been seen occulting a star three times: first on February 2, 1998 and twice in January, 2003.
[change] References
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Near-Earth asteroids · Main belt · Jupiter Trojans · Neptune Trojans · Comets · Kuiper belt · Oort cloud |