(11547) Griesser Main-belt Asteroid
Discovered on 31 October 1992 by F. Borngen at Tautenburg.
Swiss amateur astronomer Markus Griesser (b. 1949) is cofounder of the Eschenberg Observatory in Winterthur. A passionate science writer and popularizer of astronomy, he is also a diligent observer of near-Earth objects. This minor planet was numbered as a result of observations made by him in Sept. 1999.Naming citation (WGSBN Bull. 5, #28, 6), IAU / Minor Planet Center, via NASA/JPL
Where Griesser is today
Seen from above the solar system on 2026-10-14: Griesser is 2.84 au from the Sun and 3.80 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11547 |
| Provisional designation | 1992 UP8 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.11 km (#16,908 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.397 |
| Rotation period | 3.34 hours |
| Absolute magnitude (H) | 15.18 |
| Orbital period | 3.58 years |
| Semi-major axis | 2.34 au |
| Perihelion – aphelion | 1.83 – 2.86 au |
| Eccentricity | 0.221 |
| Inclination | 2.03° |
| Closest distance between its orbit and Earth's (MOID) | 0.837 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Markus
All asteroids named after someone called Markus
Also discovered on 31 October 1992
- (6527) Takashiito
- (14446) Kinkowan
- (22354) Sposetti
- (24754) Zellyfry
- (85217) Bilzingsleben
- (134348) Klemperer