1815 Beethoven
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1815 Beethoven, provisional designation Template:Mp, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately Script error: No such module "convert". in diameter. It was discovered on 27 January 1932, by German astronomer Karl Reinmuth at the Heidelberg Observatory.[1] The uncommon F-type asteroid seems to have a long rotation period of 54 hours (tentative).[2] It was named after Ludwig van Beethoven.[1]
Orbit and classification
Beethoven is a non-family asteroid from the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[3][4] Based on osculating Keplerian orbital elements and in previous analysis by Zappalà, the asteroid has also been classified as a member of the Themis family (602Script error: No such module "Check for unknown parameters".), a very large family of carbonaceous asteroids, named after 24 Themis.[3][2]
It orbits the Sun in the outer main-belt at a distance of 2.5–3.8 AU once every 5 years and 7 months (2,043 days; semi-major axis of 3.15 AU). Its orbit has an eccentricity of 0.19 and an inclination of 3° with respect to the ecliptic.[5] The body's observation arc begins with its official discovery observation at Heidelberg in January 1992.[1]
Naming
This minor planet was named after German composer Ludwig van Beethoven (1770-1827).[1] The official Template:MoMP was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3935Script error: No such module "Check for unknown parameters".).[6]
Physical characteristics
In the Tholen classification, Beethoven is an uncommon, carbonaceous F-type asteroid,[5] while in the Barucci taxonomy, it is a C0 type.[3]
Rotation period
In January 2005, a fragmentary rotational lightcurve of Beethoven was obtained from photometric observations by Robert Stephens at his Santana Observatory Template:Obscode in California. Lightcurve analysis gave a rotation period of Script error: No such module "val". hours with a brightness amplitude of 0.2 magnitude (U=1Script error: No such module "Check for unknown parameters".).[7]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and several publications by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Beethoven measures between 23.7 and 33.9 kilometers in diameter and its surface has an albedo between 0.04 and 0.10.[8][9][10][11][12][13][14]
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0548 and a diameter of 30.36 kilometers based on an absolute magnitude of 11.36.[2]
References
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External links
- Asteroid Lightcurve Database (LCDB), query form (info Template:Webarchive)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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