(21562) Chrismessick Main-belt Asteroid
Discovered on 19 August 1998 by LINEAR at Socorro.
Christopher D. Messick (b. 1989) was awarded second place in the 2006 Intel International Science and Engineering Fair for his engineering project. He attends the Sargent High School, Monte Vista, Colorado, U.S.A.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Chrismessick is today
Seen from above the solar system on 2026-10-14: Chrismessick is 2.27 au from the Sun and 3.23 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21562 |
| Provisional designation | 1998 QZ94 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.59 km (#13,737 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.314 |
| Absolute magnitude (H) | 14.47 |
| Orbital period | 4.17 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.22 – 2.96 au |
| Eccentricity | 0.142 |
| Inclination | 12.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.25 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Christopher
- (5382) McKay
- (7024) Impey
- (7923) Chyba
- (9541) Magri
- (11713) Stubbs
- (12665) Chriscarson
- (12868) Onken
- (13609) Lewicki
- (14179) Skinner
- (15851) Chrisfleming
- (17815) Kulawik
- (17908) Chriskuyu
All asteroids named after someone called Christopher
Also discovered on 19 August 1998
- (11736) Viktorfischl
- (12874) Poisson
- (13705) Llapasset
- (14129) DiBucci
- (21563) Chetgervais
- (25015) Lairdclose
- (25074) Honami