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Discovery and designation
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| Discovered by | C. J. van Houten, I. van Houten-Groeneveld & T. Gehrels | |||||||||
| Discovery date | October 16, 1977 | |||||||||
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Designations
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| MPC designation | 9912 Donizetti | |||||||||
| Named after | Gaetano Donizetti | |||||||||
| Alternate name(s) | 2078 T-3, 1979 BH1, 1989 SJ10 | |||||||||
| Epoch October 27, 2007 | ||||||||||
| Ap | 2.9408392 AU | |||||||||
| Peri | 2.189721 AU | |||||||||
| Semi-major axis | 2.5652801 AU | |||||||||
| Eccentricity | 0.1464008 | |||||||||
| Orbital period | 1500.7232861 d | |||||||||
| Mean anomaly | 277.13215° | |||||||||
| Inclination | 7.26574° | |||||||||
| Longitude of ascending node | 344.26015° | |||||||||
| Argument of peri | 227.33207° | |||||||||
| Dimensions | ~37.1 km[1] | |||||||||
| Geometric albedo | ~0.01 | |||||||||
| Surface temp. Kelvin Celsius |
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| Spectral type | S-type asteroid[2] | |||||||||
| Absolute magnitude (H) | 12.8 | |||||||||
9912 Donizetti is an S-type main belt asteroid. It orbits the Sun once every 4.11 years.[3] It is associated with the Rafita family of asteroids.[4]
Discovered on October 16, 1977 by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld on photographic plates taken by Tom Gehrels with the Samuel Oschin telescope at the Palomar Observatory, it was given the provisional designation "2078 T-3". It was later renamed "Donizetti" after Italian composer Gaetano Donizetti.[5]
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