|Discovery and designation|
|Discovered by||Paul Comba|
|Discovery date||July 4, 1997|
|MPC designation||9903 Leonhardt|
|1997 NA1, 1976 UG6|
|Epoch October 27, 2008|
|1972.6865113 d (5.40 a )|
Average orbital speed
9903 Leonhardt is a main belt asteroid. It has an eccentricity of 0.245 and an orbital period of 5.40 years. Leonhardt has an average orbital speed of approximately 16.987 km/s and an inclination of 1.68°.
It was discovered on July 4, 1997 by Paul Comba at the Prescott Observatory. Originally given the provisional designation "1997 NA1", it was renamed "Leonhardt" after Gustav Leonhardt, the eminent Dutch harpsichordist, conductor and pedagogue. Also the asteroid (12637) Gustavleonhardt was named after Gustav Leonhardt.
- Tedesco E.F., Noah P.V., Noah M., Price S.D. "The supplemental IRAS minor planet survey (SIMPS)".
- "9903 Leonhardt (1997 NA1)". JPL Small-Body Database Browser. NASA/JPL. Retrieved 2008-02-07.
- MPC 34356 Minor Planet Center
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