(21504) Caseyfreeman Main-belt Asteroid
Discovered on 22 May 1998 by LINEAR at Socorro.
Casey Jo Freeman (b. 1987) was awarded first place in the 2006 Intel International Science and Engineering Fair for her biochemistry project. She attends the Mid-Buchanan High School, Faucett, Missouri, U.S.A.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Caseyfreeman is today
Seen from above the solar system on 2026-10-14: Caseyfreeman is 2.49 au from the Sun and 2.21 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21504 |
| Provisional designation | 1998 KS19 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.29 km (#10,066 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.437 |
| Rotation period | 44.6 hours |
| Absolute magnitude (H) | 13.57 |
| Orbital period | 4.31 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.47 – 2.83 au |
| Eccentricity | 0.0679 |
| Inclination | 9.10° |
| Closest distance between its orbit and Earth's (MOID) | 1.48 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Casey
All asteroids named after someone called Casey
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