95 Arethusa
Arethusa (minor planet designation: 95 Arethusa) 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.
.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 | |
References
- 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
- "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 2010-01-17 at WebCite
External links
- Asteroid Occultation Results for North America on 2008/04/16 with 2 chords
- 95 Arethusa at AstDyS-2, Asteroids—Dynamic Site
- 95 Arethusa at the JPL Small-Body Database
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