(21801) Ancerl Main-belt Asteroid
Discovered on 2 October 1999 by L. Sarounova at Ondrejov.
Karel Ančerl (1908-1973) was the head conductor of the Czech Philharmonic Orchestra during 1950-1968. He brought the orchestra to the highest standard by his demands and consistent work. He was an excellent interpreter of the music of the twentieth century and made some of Prague's best recordings.Naming citation (20020427/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ancerl is today
Seen from above the solar system on 2026-10-14: Ancerl is 2.30 au from the Sun and 2.96 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21801 |
| Provisional designation | 1999 TW3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.10 km (#12,500 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.240 |
| Absolute magnitude (H) | 14.44 |
| Orbital period | 3.70 years |
| Semi-major axis | 2.39 au |
| Perihelion – aphelion | 2.17 – 2.61 au |
| Eccentricity | 0.0916 |
| Inclination | 5.37° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Karel
- (5514) Karelraska
- (6379) Vrba
- (7226) Kryl
- (11431) Karelbosscha
- (12160) Karelwakker
- (16951) Carolus Quartus
- (17407) Teige
- (19291) Karelzeman
- (22465) Karelandel
- (22505) Lewit
- (29674) Rausal
- (31124) Slavicek
All asteroids named after someone called Karel
Also discovered on 2 October 1999
- (12929) Periboea
- (12935) Zhengzhemin
- (13406) Sekora
- (16087) Rhythmgarg
- (16094) Scottmccord
- (20629) Robert
- (20631) Stefuller
- (20632) Carlyrosser
- (20633) Robertluther
- (20634) Marichardson
- (20635) Robinandrews
- (20636) Romanhirsch