(7004) Markthiemens Main-belt Asteroid
Discovered on 24 July 1979 by S. J. Bus at Siding Spring.
Mark H. Thiemens (b. 1950) is a professor of chemistry at the University of California, San Diego. He is known for his seminal work on the “mass-independent isotope effect” and for his studies of the early atmosphere of Mars based on isotopic measurements from Martian meteorites.Naming citation (20060809/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Markthiemens is today
Seen from above the solar system on 2026-10-14: Markthiemens is 2.11 au from the Sun and 2.08 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 7004 |
| Provisional designation | 1979 OB9 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.39 km (#11,867 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.253 |
| Rotation period | 6.03 hours |
| Absolute magnitude (H) | 14.13 |
| Orbital period | 3.54 years |
| Semi-major axis | 2.32 au |
| Perihelion – aphelion | 1.91 – 2.74 au |
| Eccentricity | 0.178 |
| Inclination | 5.02° |
| Closest distance between its orbit and Earth's (MOID) | 0.913 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Mark
- (7552) Sephton
- (7778) Markrobinson
- (7917) Hammergren
- (8015) Marksimons
- (8329) Speckman
- (8686) Akenside
- (8789) Effertz
- (10276) Matney
- (10598) Markrees
- (12094) Mazumder
- (13211) Stucky
- (13652) Elowitz
All asteroids named after someone called Mark