(21873) Jindrichuvhradec Main-belt Asteroid
Discovered on 29 October 1999 by Ticha, J., Tichy, M. at Klet.
Jindřichův Hradec is the pleasant south Bohemian town founded in the thirteenth century, known for its Renaissance château and provost's Gothic church situated precisely on the fifteenth meridian east of Greenwich, as a line across its paving stones shows.Naming citation (20020128/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Jindrichuvhradec is today
Seen from above the solar system on 2026-10-14: Jindrichuvhradec is 2.78 au from the Sun and 2.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21873 |
| Provisional designation | 1999 UU3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.18 km (#7,430 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.237 |
| Rotation period | 50.6 hours |
| Absolute magnitude (H) | 13.27 |
| Orbital period | 5.61 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.52 – 3.80 au |
| Eccentricity | 0.203 |
| Inclination | 4.46° |
| Closest distance between its orbit and Earth's (MOID) | 1.52 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 29 October 1999
- (13410) Arhale
- (13412) Guerrieri
- (13413) Bobpeterson
- (13414) Grantham
- (13415) Stevenbland
- (14674) INAOE
- (15513) Emmermann
- (21888) Durech
- (22961) Rosegarcia
- (24090) Grindavik
- (24093) Tomoyamaguchi
- (31824) Elatus