(35356) Vondrak Main-belt Asteroid
Discovered on 25 September 1997 by Pravec, P., Sarounova, L. at Ondrejov.
Czech astronomer Jan Vondrák (b. 1940), currently president of IAU Division I, has made important contributions to the numerical treatment of the earth's rotation parameters and theoretical studies of lunar motion and ephemeris astronomy. In 2007 he was awarded the Nušl Prize of the Czech Astronomical Society.Naming citation (20080321/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Vondrak is today
Seen from above the solar system on 2026-10-14: Vondrak is 2.16 au from the Sun and 2.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 35356 |
| Provisional designation | 1997 SL3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.69 km (#17,286 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.188 |
| Absolute magnitude (H) | 16.5 |
| Orbital period | 3.31 years |
| Semi-major axis | 2.22 au |
| Perihelion – aphelion | 1.94 – 2.50 au |
| Eccentricity | 0.125 |
| Inclination | 5.48° |
| Closest distance between its orbit and Earth's (MOID) | 0.940 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Jan
- (2308) Schilt
- (3791) Marci
- (3847) Sindel
- (6266) Letzel
- (6834) Hunfeld
- (7218) Skacel
- (7221) Sallaba
- (7701) Zrzavy
- (7849) Janjosefric
- (8149) Ruff
- (9239) van Riebeeck
- (9259) Janvanparadijs
All asteroids named after someone called Jan
Also discovered on 25 September 1997
- (15385) Dallolmo
- (15386) Nicolini
- (16802) Rainer
- (26971) Sezimovo Usti
- (27963) Hartkopf
- (29457) Marcopolo
- (31139) Garnavich
- (37788) Suchan
- (44005) Migliardi