(12989) Chriseanderson Main-belt Asteroid
Discovered on 1 March 1981 by S. J. Bus at Siding Spring.
Chris Elaine Anderson (b. 1957) contributed to NASA's Lucy Trojan asteroid mission as typesetter and administrative assistant. She helped produce the Step-1 proposal and the Phase-A Concept Study Report and supported the entire team for the Site Visit.Naming citation (WGSBN Bull. 1, #9, 13), IAU / Minor Planet Center, via NASA/JPL
Where Chriseanderson is today
Seen from above the solar system on 2026-10-14: Chriseanderson is 2.08 au from the Sun and 2.99 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12989 |
| Provisional designation | 1981 EV9 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.53 km (#17,334 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.196 |
| Rotation period | 5.67 hours |
| Absolute magnitude (H) | 16.29 |
| Orbital period | 3.26 years |
| Semi-major axis | 2.20 au |
| Perihelion – aphelion | 2.05 – 2.35 au |
| Eccentricity | 0.0697 |
| Inclination | 4.32° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Chris
- (4937) Lintott
- (10486) Teron
- (14143) Hadfield
- (14807) Chrisanders
- (27353) Chrisspenner
- (28632) Christraver
- (30201) Caruana
- (31203) Hersman
- (31729) Scharmen
- (128417) Chrismccaa
- (129051) Chrismay
- (129125) Chrisvoth
All asteroids named after someone called Chris
Also discovered on 1 March 1981
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- (3016) Meuse
- (3029) Sanders
- (3030) Vehrenberg
- (3042) Zelinsky
- (3058) Delmary
- (3075) Bornmann
- (3135) Lauer
- (3308) Ferreri
- (3472) Upgren
- (3498) Belton
- (3503) Brandt