317 Roxane

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317 Roxane
Orbit of 371 Roxane.gif
Orbit of 371 Roxane
Discovered by Auguste Charlois
Discovery date September 11, 1891
Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion 2.481 AU (371.161 Gm)
Perihelion 2.092 AU (312.895 Gm)
2.286 AU (342.028 Gm)
Eccentricity 0.085
3.46 yr (1262.685 d)
19.7 km/s
Inclination 1.763°
Physical characteristics
Dimensions 19.0 km
Albedo 0.493
Spectral type

317 Roxane is an asteroid from the asteroid belt approximately 19 km in diameter. It was discovered by Auguste Charlois from Nice on September 11, 1891. The name was chosen by F. Bidschof, an assistant at the Vienna Observatory, at Charlois's request; Bidschof chose to name it after Roxana, the wife of Alexander the Great, and at first used the spelling Roxana.[1][2]

In 2008, a team identified Roxane as the closest known spectroscopic match for the Peña Blanca Spring meteorite that landed in a swimming pool in Texas in 1946. There is a possibility, therefore, that 317 Roxane is from the same parent object as this meteorite.[3]

In 2009, a team using the Gemini-North adaptive optics telescope discovered a moon orbiting Roxane. The moon is provisionally named S/2009 (317) 1. It measures 5 km in diameter and orbits 245 km from Roxane, completing one orbit every 13 days.[4]

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  1. ^ Lutz D. Schmadel, Dictionary of Minor Planet Names, p. 42
  2. ^ Charlois, A.; Benennung von kleinen Planeten, Astronomische Nachrichten, Vol. 132, No. 3155, p. 175
  3. ^ Fornasier, S. et al.; Visible and near infrared spectroscopic investigation of E-type asteroids, including 2867 Šteins, a target of the Rosetta mission, Icarus, Vol. 196, No. 1, p. 119-134
  4. ^ Wm. Robert Johnson, "(317) Roxane and S/2009 (317) 1, Johnston's Archive. 11 Dec 2009. Accessed 1 Jan 2012.