(21682) Pestafrantisek Main-belt Asteroid
Discovered on 9 September 1999 by Pravec, P., Kusnirak, P. at Ondrejov.
František Pešta (1905-1982), founder of the public observatory in the town of Sezimovo Ústí that now bears his name, was a keen popularizer of astronomy. He studied archival records of the Strkov (near Tábor, Bohemia) meteorite shower in 1753.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Pestafrantisek is today
Seen from above the solar system on 2026-10-14: Pestafrantisek is 2.62 au from the Sun and 1.89 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21682 |
| Provisional designation | 1999 RT32 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.45 km (#14,092 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.148 |
| Absolute magnitude (H) | 15.15 |
| Orbital period | 3.88 years |
| Semi-major axis | 2.47 au |
| Perihelion – aphelion | 2.27 – 2.66 au |
| Eccentricity | 0.0786 |
| Inclination | 8.52° |
| Closest distance between its orbit and Earth's (MOID) | 1.29 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 9 September 1999
- (12127) Mamiya
- (12130) Mousa
- (12589) Davidanand
- (12590) Ballantine
- (12591) Bergey
- (12592) Brianchen
- (12593) Shashlov
- (12594) Sidorclare
- (12595) Amandashaw
- (12596) Shukla
- (12597) Williamdaniel
- (12598) Sierra