95 Arethusa Explained

Minorplanet:yes
Background:
  1. D6D6D6
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.

External links

Notes and References

  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
  4. 6 . Ďurech . Josef . Kaasalainen, Mikko . Herald, David . Dunham, David . Timerson, Brad . Hanuš, Josef . Frappa, Eric . Talbot, John . Hayamizu, Tsutomu . Warner, Brian D. . Pilcher, Frederick . Galád, Adrián . Combining asteroid models derived by lightcurve inversion with asteroidal occultation silhouettes . Icarus . 214 . 2 . 652–670 . 2011 . 10.1016/j.icarus.2011.03.016 . 1104.4227 . 2011Icar..214..652D . 26 January 2012 . https://web.archive.org/web/20160303214312/http://astro.troja.mff.cuni.cz/projects/asteroids3D/download/durech_et_al_2011_occ_paper.pdf . 3 March 2016 . dead .
  5. Web site: Asteroid Data Sets . 14 January 2007 . 17 December 2009 . https://web.archive.org/web/20091217104722/http://www.psi.edu/pds/resource/albedo.html . dead .
  6. Web site: 95 Arethusa . . . 12 May 2016.