(28602) Westfall Main-belt Asteroid
Discovered on 4 March 2000 by CSS at Catalina.
John Westfall (b. 1938) is Professor Emeritus at San Francisco State University and the former Executive Director of the Association of Lunar & Planetary Observers (1985-1995), as well as a recipient of the ALPO Walter Haas Observing Award in 1988 and the ALPO Peggy Haas Service Award in 1998.Naming citation (MPC batch dated 2016-02-22), IAU / Minor Planet Center, via NASA/JPL
Where Westfall is today
Seen from above the solar system on 2026-10-14: Westfall is 2.53 au from the Sun and 3.06 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 28602 |
| Provisional designation | 2000 EL147 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.65 km (#13,590 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.160 |
| Absolute magnitude (H) | 15.12 |
| Orbital period | 4.28 years |
| Semi-major axis | 2.63 au |
| Perihelion – aphelion | 2.51 – 2.76 au |
| Eccentricity | 0.0478 |
| Inclination | 2.95° |
| Closest distance between its orbit and Earth's (MOID) | 1.49 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called John
- (3882) Johncox
- (3893) DeLaeter
- (4089) Galbraith
- (4147) Lennon
- (4525) Johnbauer
- (4656) Huchra
- (4987) Flamsteed
- (5207) Hearnshaw
- (5216) Cannizzo
- (5362) Johnyoung
- (5517) Johnerogers
- (5558) Johnnapier
All asteroids named after someone called John
Also discovered on 4 March 2000
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- (15150) Salsa
- (15151) Wilmacherup
- (15548) Kalinowski
- (17235) Ellawesson
- (18077) Dianeingrao
- (20762) Wargnier
- (27417) Jessjohnson
- (28601) Benton
- (28603) Jenkins
- (30096) Glindadavidson
- (30097) Traino