(21660) Velenia Main-belt Asteroid
Discovered on 20 August 1999 by P. Pravec at Ondrejov.
Miroslav Velen (b. 1972) has developed programs for photometric and astrometric reduction of observations obtained by the minor planet observation program at the Ondřejov Observatory. This object is being named on the occasion of the marriage of Miroslav Velen and Jarmila Karásková in April 2001.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Velenia is today
Seen from above the solar system on 2026-10-14: Velenia is 2.68 au from the Sun and 1.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21660 |
| Provisional designation | 1999 QZ1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.95 km (#9,007 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0550 |
| Rotation period | 15.1 hours |
| Absolute magnitude (H) | 14.96 |
| Orbital period | 4.53 years |
| Semi-major axis | 2.74 au |
| Perihelion – aphelion | 2.62 – 2.85 au |
| Eccentricity | 0.0407 |
| Inclination | 4.79° |
| Closest distance between its orbit and Earth's (MOID) | 1.64 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Miroslav
All asteroids named after someone called Miroslav