(2343) Siding Spring Main-belt Asteroid
Discovered on 25 June 1979 by Helin, E. F., Bus, S. J. at Siding Spring.
Named for the New South Wales community in which the Australian National Observatory, Anglo-Australian Observatory and U.K. Schmidt telescope are located. This is the first minor planet discovered with the U.K. Schmidt telescope to be numbered.Naming citation (MPC 5851), IAU / Minor Planet Center, via NASA/JPL
Where Siding Spring is today
Seen from above the solar system on 2026-10-14: Siding Spring is 1.95 au from the Sun and 1.59 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2343 |
| Provisional designation | 1979 MD4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.20 km (#10,254 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.376 |
| Rotation period | 2.11 hours |
| Absolute magnitude (H) | 13.44 |
| Orbital period | 3.57 years |
| Semi-major axis | 2.33 au |
| Perihelion – aphelion | 1.74 – 2.93 au |
| Eccentricity | 0.254 |
| Inclination | 1.77° |
| Closest distance between its orbit and Earth's (MOID) | 0.740 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 25 June 1979
- (2392) Jonathan Murray
- (2441) Hibbs
- (2618) Coonabarabran
- (2619) Skalnate Pleso
- (2628) Kopal
- (2682) Soromundi
- (2704) Julian Loewe
- (3129) Bonestell
- (3205) Boksenberg
- (3756) Ruscannon
- (3817) Lencarter
- (4314) Dervan
More named asteroids discovered by Helin, E. F., Bus, S. J.
- (2324) Janice
- (2392) Jonathan Murray
- (2440) Educatio
- (2441) Hibbs
- (2499) Brunk
- (2611) Boyce
- (2618) Coonabarabran
- (2619) Skalnate Pleso
- (2628) Kopal
- (2682) Soromundi
- (2704) Julian Loewe
- (2725) David Bender
← (2342) Lebedev · (2344) Xizang →