(21853) Kelseykay Main-belt Asteroid
Discovered on 7 October 1999 by LINEAR at Socorro.
Kelsey Kay Burnham (b. 1993) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her botany & zoology project. She attends the Yearling Middle School, Okeechobee, Florida.Naming citation (20051019/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Kelseykay is today
Seen from above the solar system on 2026-10-14: Kelseykay is 2.86 au from the Sun and 2.99 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21853 |
| Provisional designation | 1999 TU146 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.42 |
| Orbital period | 5.16 years |
| Semi-major axis | 2.99 au |
| Perihelion – aphelion | 2.78 – 3.20 au |
| Eccentricity | 0.0710 |
| Inclination | 4.39° |
| Closest distance between its orbit and Earth's (MOID) | 1.79 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Kelsey
All asteroids named after someone called Kelsey
Also discovered on 7 October 1999
- (12931) Mario
- (16089) Lamb
- (16090) Lukaszewski
- (16091) Malchiodi
- (19704) Medlock
- (20643) Angelicaliu
- (20644) Amritdas
- (20645) Ryderstrauss
- (20646) Nikhilgupta
- (20647) Ryujiokazaki
- (21850) Abshir
- (21852) Bolander