(8789) Effertz Main-belt Asteroid
Discovered on 7 November 1978 by Helin, E. F., Bus, S. J. at Palomar.
Mark Joseph Effertz (b. 1977) contributed to NASA's Lucy Trojan asteroid mission as the Mission Operations Spacecraft Engineer.Naming citation (WGSBN Bull. 1, #9, 7), IAU / Minor Planet Center, via NASA/JPL
Where Effertz is today
Seen from above the solar system on 2026-10-14: Effertz is 2.47 au from the Sun and 1.63 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8789 |
| Provisional designation | 1978 VZ7 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.49 km (#6,158 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0740 |
| Rotation period | 5.28 hours |
| Absolute magnitude (H) | 14.12 |
| Orbital period | 5.41 years |
| Semi-major axis | 3.08 au |
| Perihelion – aphelion | 2.42 – 3.75 au |
| Eccentricity | 0.216 |
| Inclination | 1.05° |
| Closest distance between its orbit and Earth's (MOID) | 1.40 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Mark
- (7004) Markthiemens
- (7552) Sephton
- (7778) Markrobinson
- (7917) Hammergren
- (8015) Marksimons
- (8329) Speckman
- (8686) Akenside
- (10276) Matney
- (10598) Markrees
- (12094) Mazumder
- (13211) Stucky
- (13652) Elowitz
All asteroids named after someone called Mark
Also discovered on 7 November 1978
- (2324) Janice
- (2440) Educatio
- (2499) Brunk
- (2611) Boyce
- (2725) David Bender
- (2925) Beatty
- (3240) Laocoon
- (3449) Abell
- (3651) Friedman
- (3718) Dunbar
- (3926) Ramirez
- (4012) Geballe