(21506) Betsill Main-belt Asteroid
Discovered on 22 May 1998 by LINEAR at Socorro.
Alayna Rachelle Betsill (b. 1988) was awarded second place in the 2005 Intel International Science and Engineering Fair for her microbiology team project. She attends the Henry Perrine Baldwin High School, Wailuku, Hawaii, U.S.A.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Betsill is today
Seen from above the solar system on 2026-10-14: Betsill is 2.31 au from the Sun and 2.72 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21506 |
| Provisional designation | 1998 KH30 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 5.27 hours |
| Absolute magnitude (H) | 14.46 |
| Orbital period | 3.51 years |
| Semi-major axis | 2.31 au |
| Perihelion – aphelion | 2.12 – 2.50 au |
| Eccentricity | 0.0826 |
| Inclination | 7.19° |
| Closest distance between its orbit and Earth's (MOID) | 1.13 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 22 May 1998
- (9466) Shishir
- (11187) Richoliver
- (11730) Yanhua
- (11735) Isabellecohen
- (12104) Chesley
- (12106) Menghuan
- (12107) Reneebarcia
- (12108) Jamesaustin
- (12529) Reighard
- (12530) Richardson
- (12860) Turney
- (12861) Wacker