1727 Mette
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1727 Mette, provisional designation 1965 BA, is a stony, binary asteroid[lower-alpha 1] and Mars-crosser from the inner regions of the asteroid belt, about 9 kilometers in diameter. It was discovered by English astronomer David Andrews at Boyden Observatory near Bloemfontein in Free State, South Africa on 25 January 1965.[13]
The S-type asteroid is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun at a distance of 1.7–2.0 AU once every two and a half years (922 days). Its orbit shows an eccentricity of 0.10 and is significantly tilted by 23 degrees to the plane of the ecliptic. It has been observed numerous times with light-curve analysis indicating a moderately elongated body and rendering a rotation period of close to 3 hours.[9][12] The body has an assumed geometric albedo of 0.20, typical for stony asteroids.[3] Being a Mars-crosser, it will make a relatively close approach to Mars on April 15, 2023, when it will pass near the Red Planet at a distance of less than 0.08 AU, or 12 million kilometers.[1]
In 2013, a satellite orbiting the asteroid was discovered. The moon measures about 2 kilometers in diameter and orbits Mette once every 20 hours and 59 minutes.[4][5][14] There are several hundreds of asteroids known to have satellites (also see Category:Binary asteroids).[15]
The minor planet was named by the discoverer after his wife, Mette Andrews for her comprehension of his nocturnal working hours and absence from home.[2]
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References
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<references />, or <references group="..." />External links
- (IAUC) CBET 3402: 20130205 : (1727) METTE
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1727 Mette at the JPL Small-Body Database
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