(7403) Choustnik Main-belt Asteroid
Discovered on 14 January 1988 by A. Mrkos at Klet.
Choustník is a castle founded in the mid-thirteenth century. Under the brothers Beneš and Jan of Choustník two similar palaces with square towers were built. Choustník is a rare example of twin castles. It was abandoned in the seventeenth century. The name was suggested by M. Tichy.Naming citation (20010309/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Choustnik is today
Seen from above the solar system on 2026-10-14: Choustnik is 3.16 au from the Sun and 2.98 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 7403 |
| Provisional designation | 1988 AV1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.01 km (#6,575 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0600 |
| Rotation period | 4.53 hours |
| Absolute magnitude (H) | 14.17 |
| Orbital period | 4.49 years |
| Semi-major axis | 2.72 au |
| Perihelion – aphelion | 1.99 – 3.46 au |
| Eccentricity | 0.271 |
| Inclination | 8.58° |
| Closest distance between its orbit and Earth's (MOID) | 1.00 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.