9903 Leonhardt
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9903 Leonhardt, provisional designation Template:Mp, is a dark asteroid from the outer region of the asteroid belt, approximately 10 kilometers in diameter.
The asteroid was discovered on 4 July 1997, by American amateur astronomer Paul Comba at Prescott Observatory in Arizona, United States.[1] It was named after Dutch keyboard player Gustav Leonhardt.[2]
Orbit and classification
Leonhardt orbits the Sun in the outer main-belt at a distance of 2.4–3.8 AU once every 5 years and 5 months (1,982 days). Its orbit has an eccentricity of 0.24 and an inclination of 2° with respect to the ecliptic.[3]
It was first identified as Template:Mp at Kiso Observatory in 1976, extending the body's observation arc by 21 years prior to its official discovery observation at Prescott.[1]
Physical characteristics
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Leonhardt measures 17.8 and 8.499 kilometers in diameter, respectively.[4][5] WISE/NEOWISE also gives an albedo of 0.042 for the body's surface.[4] It has an absolute magnitude of 14.5.[3]
Lightcurves
As of 2017, the asteroid's rotation period and shape remain unknown.[3][6]
Naming
This minor planet was named for Gustav Leonhardt (1928–2012), a Dutch conductor and harpsichordist, who founded the Leonhardt Baroque Ensemble. He was known for his many international concert tours and for his large number of recorded baroque works.[2] The official naming citation was published by the Minor Planet Center on 2 April 1999 (M.P.C. 34356Script error: No such module "Check for unknown parameters".).[7]
The main-belt asteroid 12637 Gustavleonhardt, discovered during the second Palomar–Leiden Trojan survey campaign in 1973, is also named in his honor.[8]
References
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External links
- Asteroid Lightcurve Database (LCDB), query form (info Script error: No such module "webarchive".)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
- Template:AstDys
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
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