95 Arethusa

95 Arethusa
	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
MPC designation	(95) Arethusa
Pronunciation	/ærəˈθjuːsə/[1]
Minor planet category	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)
Semi-major axis	3.06457 AU (458.453 Gm)
Eccentricity	0.15245
Orbital period	5.36 yr (1959.5 d)
Average orbital speed	16.91 km/s
Mean anomaly	250.185°
Mean motion	0° 11m 1.385s / day
Inclination	12.9955°
Longitude of ascending node	243.038°
Argument of perihelion	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
Rotation period	8.705 h (0.3627 d)
Geometric albedo	0.0698±0.012 [4]; 0.070 [6]
Spectral type	C
Absolute magnitude (H)	8.0

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.

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
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
95 Arethusa at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[1] Benjamin Smith (1903) The Century Dictionary and Cyclopedia

[2] White & Riddle (1904) A Latin-English Dictionary for the Use of Junior Students

[3] Lucas Carpenter (1989) Selected Essays of Fletcher, p. 186

[jpldata-4] "95 Arethusa". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.

[Ďurech2011-5] 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.

[6] Asteroid Data Sets Archived 2010-01-17 at WebCite