Back 95 Arethusa (كويكب) ARZ 95 Arethusa AST (95) Арэтуса BE (95) Aretusa Catalan (95) Аретуса CE Arethusa (planetka) Czech (95) Arethusa German 95 Αρέθουσα Greek 95 Aretuzo EO (95) Aretusa Spanish
.png) A three-dimensional model of 95 Arethusa based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | Karl Theodor Robert Luther |
| Discovery date | 23 November 1867 |
| Designations | |
| (95) Arethusa | |
| Pronunciation | /ærəˈθjuːsə/[1] |
| Main belt | |
| Adjectives | Arethusian,[2] Arethusean[3] /ˌærəˈθjuːziən/ |
| Orbital characteristics [4] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 143.53 yr (52424 d) |
| Aphelion | 3.53176 AU (528.344 Gm) |
| Perihelion | 2.59737 AU (388.561 Gm) |
| 3.06457 AU (458.453 Gm) | |
| Eccentricity | 0.15245 |
| 5.36 yr (1959.5 d) | |
Average orbital speed | 16.91 km/s |
| 250.185° | |
| 0° 11m 1.385s / day | |
| Inclination | 12.9955° |
| 243.038° | |
| 154.196° | |
| Physical characteristics | |
| Dimensions | 136.04±10.1 km [4] 136.04 km† 147 ± 32 km [5] |
| Mass | 2.6×1018 kg |
Equatorial surface gravity | 0.0380 m/s² |
Equatorial escape velocity | 0.0719 km/s |
| 8.705 h (0.3627 d) | |
| 0.0698±0.012 [4] 0.070 [6] | |
| C | |
| 8.0 | |
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:[7] first on 2 February 1998, and twice in January 2003.[citation needed]
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.
- ^ Benjamin Smith (1903) The Century Dictionary and Cyclopedia
- ^ White & Riddle (1904) A Latin-English Dictionary for the Use of Junior Students
- ^ Lucas Carpenter (1989) Selected Essays of Fletcher, p. 186
- ^ a b c "95 Arethusa". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- ^ Ďurech, Josef; Kaasalainen, Mikko; Herald, David; Dunham, David; Timerson, Brad; Hanuš, Josef; et al. (2011). "Combining asteroid models derived by lightcurve inversion with asteroidal occultation silhouettes" (PDF). Icarus. 214 (2): 652–670. arXiv:1104.4227. Bibcode:2011Icar..214..652D. doi:10.1016/j.icarus.2011.03.016. Archived from the original (PDF) on 3 March 2016. Retrieved 26 January 2012.
- ^ "Asteroid Data Sets". Archived from the original on 17 December 2009. Retrieved 14 January 2007.
- ^ Cite error: The named reference
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