Minorplanet: | yes |
Background: |
|
95 Arethusa | |
Discovered: | 23 November 1867 |
Mpc Name: | (95) Arethusa |
Pronounced: | [1] |
Adjectives: | Arethusian,[2] Arethusean[3] |
Epoch: | 31 July 2016 (JD 2457600.5) |
Semimajor: | 3.06457AU |
Perihelion: | 2.59737AU |
Aphelion: | 3.53176abbr=onNaNabbr=on |
Eccentricity: | 0.15245 |
Period: | 5.36 yr (1959.5 d) |
Inclination: | 12.9955° |
Asc Node: | 243.038° |
Arg Peri: | 154.196° |
Avg Speed: | 16.91 km/s |
Dimensions: |   136.04 km 147 ± 32 km [4] |
Mass: | 2.6 kg |
Surface Grav: | 0.0380 m/s² |
Escape Velocity: | 0.0719 km/s |
Rotation: | 8.705abbr=onNaNabbr=on |
Abs Magnitude: | 8.0 |
Albedo: |   0.070 [5] |
Mean Motion: | / day |
Orbit Ref: |  [6] |
Observation Arc: | 143.53 yr (52424 d) |
Uncertainty: | 0 |
95 Arethusa is a large main-belt asteroid. It was discovered by German astronomer Robert Luther on 23 November 1867, and named after one of the various Arethusas in Greek mythology. Arethusa has been observed occulting a star three times: first on 2 February 1998, and twice in January 2003.
This object is orbiting the Sun with a period of 5.36 years and an eccentricity of 0.15. The cross-section diameter is around 136 km and it is spinning with a rotation period of 8.7 hours. The spectrum matches a C-type asteroid, indicating a dark surface with a primitive carbonaceous composition.