(4129) Richelen Main-belt Asteroid
Discovered on 22 February 1988 by R. H. McNaught at Siding Spring.
Where Richelen is today
Seen from above the solar system on 2026-10-14: Richelen is 1.92 au from the Sun and 1.80 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4129 |
| Provisional designation | 1988 DM |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.39 km (#9,897 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.228 |
| Absolute magnitude (H) | 13.55 |
| Orbital period | 4.11 years |
| Semi-major axis | 2.56 au |
| Perihelion – aphelion | 1.92 – 3.21 au |
| Eccentricity | 0.251 |
| Inclination | 7.13° |
| Closest distance between its orbit and Earth's (MOID) | 0.920 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 22 February 1988
More named asteroids discovered by R. H. McNaught
- (3904) Honda
- (4093) Bennett
- (4128) UKSTU
- (4220) Flood
- (4456) Mawson
- (4499) Davidallen
- (4504) Jenkinson
- (4638) Estens
- (4667) Robbiesh
- (4678) Ninian
- (4679) Sybil
- (4699) Sootan
← (4128) UKSTU · (4130) Ramanujan →