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Discovery and designation
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| Discovered by | H. E. Holt | |||||||||
| Discovery date | July 29, 1990 | |||||||||
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Designations
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| MPC designation | (9946) 1990 ON2 | |||||||||
| Epoch October 27, 1990 | ||||||||||
| Ap | 2.4306641 AU | |||||||||
| Peri | 2.0875525 AU | |||||||||
| Semi-major axis | 2.2591083 AU | |||||||||
| Eccentricity | 0.0759396 | |||||||||
| Orbital period | 1240.2350438 d | |||||||||
| Mean anomaly | 55.12390° | |||||||||
| Inclination | 3.18334° | |||||||||
| Longitude of ascending node | 2.27094° | |||||||||
| Argument of peri | 281.52167° | |||||||||
| Surface temp. Kelvin Celsius |
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| Absolute magnitude (H) | 14.1 | |||||||||
(9946) 1990 ON2 is a main belt asteroid. It orbits the Sun once every 3.40 years.[1]
Discovered on July 29, 1990 by H. E. Holt, it was given the provisional designation "1990 ON2".[2]
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