(21612) Chelsagloria Main-belt Asteroid
Discovered on 10 May 1999 by LINEAR at Socorro.
Chelsea Gloria Gordon (b. 1987) was awarded first place in the 2005 Intel International Science and Engineering Fair for her engineering team project. She also received the Intel Foundation Achievement Award. She attends the Half Hollow Hills High School East, Dix Hills, New York, U.S.A.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Chelsagloria is today
Seen from above the solar system on 2026-10-14: Chelsagloria is 2.41 au from the Sun and 2.93 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21612 |
| Provisional designation | 1999 JS57 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.16 km (#12,365 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.136 |
| Rotation period | 42.9 hours |
| Absolute magnitude (H) | 14.29 |
| Orbital period | 3.39 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 2.10 – 2.41 au |
| Eccentricity | 0.0706 |
| Inclination | 6.11° |
| Closest distance between its orbit and Earth's (MOID) | 1.11 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Chelsea
- (11707) Grigery
- (12529) Reighard
- (18027) Gokcay
- (19452) Keeney
- (25425) Chelsealynn
- (27258) Chelseavoss
- (35427) Chelseawang
- (156751) Chelseaferrell
All asteroids named after someone called Chelsea
Also discovered on 10 May 1999
- (11219) Benbohn
- (11225) Borden
- (11227) Ksenborisova
- (11228) Botnick
- (11229) Brookebowers
- (11230) Deschaffer
- (11231) Schiavo
- (11413) Catanach
- (11414) Allanchu
- (12117) Meagmessina
- (16048) Eddiedai
- (16049) D'Amore