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(9928) 1981 WE9
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Discovery and designation
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| Discovered by | Perth Observatory | |||||||||
| Discovery date | November 16, 1981 | |||||||||
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Designations
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| MPC designation | (9928) 1981 WE9 | |||||||||
| Alternative names[1] | 1971 TJ1, 1993 FC43 | |||||||||
| Epoch October 27, 2007 | ||||||||||
| Ap | 2.6091584 AU | |||||||||
| Peri | 1.8256226 AU | |||||||||
| Semi-major axis | 2.2173905 AU | |||||||||
| Eccentricity | 0.1766797 | |||||||||
| Orbital period | 1206.0400092 d | |||||||||
| Mean anomaly | 346.22065° | |||||||||
| Inclination | 2.84296° | |||||||||
| Longitude of ascending node | 179.49922° | |||||||||
| Argument of peri | 175.65482° | |||||||||
| Dimensions | ~12.9 km[2] | |||||||||
| Sidereal rotation period |
5.547 h[3] | |||||||||
| Geometric albedo | ~0.01 | |||||||||
| Surface temp. Kelvin Celsius |
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| Absolute magnitude | 14.4 | |||||||||
(9928) 1981 WE9 is a main belt asteroid. It orbits the Sun once every 3.30 years.[4] It is associated with the Flora family of asteroids.[5]
Discovered on November 16, 1981 by the Perth Observatory in Bickley, it was given the provisional designation "1981 WE9".[6]
References
- ^ [1]
- ^ Tedesco E.F., Noah P.V., Noah M., Price S.D.. The supplemental IRAS minor planet survey (SIMPS).
- ^ Maurice Clark. Asteroid 9928 1981 WE9. Montgomery College.
- ^ 9928 (1981 WE9). JPL Small-Body Database Browser. NASA/JPL. Retrieved on 2008-02-18.
- ^ Zappala, V., Ph. Bendjoya, A. Cellino, P. Farinella, and C. Froeschle (1997). Asteroid Dynamical Families.. EAR-A-5-DDR-FAMILY-V4.1. NASA Planetary Data System.
- ^ MPO 65995 Minor Planet Center
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