(99863) Winnewisser Main-belt Asteroid
Discovered on 23 July 2002 by NEAT at Palomar.
Gisbert Winnewisser (1936-2011) was an astrophysicist who established the KOSMA sub-mm telescope on Gornergrat and set up successful partnerships between the University of Cologne and research institutes worldwide. He was a member of three IAU Commissions and was honored with many prizes.Naming citation (20111210/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Winnewisser is today
Seen from above the solar system on 2026-10-14: Winnewisser is 2.77 au from the Sun and 3.40 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 99863 |
| Provisional designation | 2002 OV25 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.84 |
| Orbital period | 5.00 years |
| Semi-major axis | 2.92 au |
| Perihelion – aphelion | 2.76 – 3.09 au |
| Eccentricity | 0.0564 |
| Inclination | 3.28° |
| Closest distance between its orbit and Earth's (MOID) | 1.74 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.