(20293) Sirichelson Main-belt Asteroid
Discovered on 20 March 1998 by LINEAR at Socorro.
Silas Isaac Richelson (b. 1986) is a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors, for his mathematics project. He attends the Byram Hills High School, Armonk, New York.Naming citation (20040415/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sirichelson is today
Seen from above the solar system on 2026-10-14: Sirichelson is 2.08 au from the Sun and 1.15 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20293 |
| Provisional designation | 1998 FQ72 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.94 km (#12,878 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.285 |
| Rotation period | 4.36 hours |
| Absolute magnitude (H) | 14.45 |
| Orbital period | 3.82 years |
| Semi-major axis | 2.44 au |
| Perihelion – aphelion | 1.97 – 2.92 au |
| Eccentricity | 0.194 |
| Inclination | 3.26° |
| Closest distance between its orbit and Earth's (MOID) | 0.963 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 20 March 1998
- (8744) Cilla
- (8745) Delaney
- (8954) Baral
- (9126) Samcoulson
- (9243) Alag
- (9454) Ardeishar
- (11169) Alkon
- (11170) Bradenmilford
- (11173) Jayanderson
- (11174) Carandrews
- (11176) Batth
- (11685) Adamcurry