(5105) Westerhout Main-belt Asteroid
Discovered on 4 October 1986 by E. Bowell at Anderson Mesa.
Where Westerhout is today
Seen from above the solar system on 2026-10-14: Westerhout is 3.01 au from the Sun and 3.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5105 |
| Provisional designation | 1986 TM1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.1 km (#5,052 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.158 |
| Rotation period | 13.1 hours |
| Absolute magnitude (H) | 12.29 |
| Orbital period | 4.18 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.18 – 3.01 au |
| Eccentricity | 0.160 |
| Inclination | 11.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 4 October 1986
- (3874) Stuart
- (4209) Briggs
- (4788) Simpson
- (4822) Karge
- (4823) Libenice
- (4969) Lawrence
- (5768) Pittich
- (6266) Letzel
- (7169) Linda
- (8001) Ramsden
- (8267) Kiss
- (8343) Tugendhat