(4125) Lew Allen Inner Main-belt Asteroid
Discovered on 28 June 1987 by E. F. Helin at Palomar.
Where Lew Allen is today
Seen from above the solar system on 2026-10-14: Lew Allen is 1.97 au from the Sun and 2.93 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4125 |
| Provisional designation | 1987 MO |
| Orbit class | Inner Main-belt Asteroid |
| Diameter | 6.39 km (#8,392 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.172 |
| Rotation period | 4.63 hours |
| Absolute magnitude (H) | 13.62 |
| Orbital period | 2.66 years |
| Semi-major axis | 1.92 au |
| Perihelion – aphelion | 1.69 – 2.15 au |
| Eccentricity | 0.118 |
| Inclination | 20.4° |
| Closest distance between its orbit and Earth's (MOID) | 0.698 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 28 June 1987
More named asteroids discovered by E. F. Helin
- (1982) Cline
- (2048) Dwornik
- (2050) Francis
- (2062) Aten
- (2074) Shoemaker
- (2083) Smither
- (2099) Opik
- (2100) Ra-Shalom
- (2128) Wetherill
- (2143) Jimarnold
- (2220) Hicks
- (2335) James
← (4124) Herriot · (4126) Mashu →