(7221) Sallaba Main-belt Asteroid
Discovered on 22 September 1981 by Z. Vavrova at Klet.
Jan Sallaba (1775-1827) was the builder and, from 1821, chief construction manager of the Schwarzenberg court in Cesky Krumlov. He designed and built Joseph's look-out tower at the top of Klet mountain, which opened in 1825, as well as gloriets in Cesky Krumlov and Zlata Koruna. The name was suggested by J. Ticha.Naming citation (MPC batch dated 2016-02-22), IAU / Minor Planet Center, via NASA/JPL
Where Sallaba is today
Seen from above the solar system on 2026-10-14: Sallaba is 1.97 au from the Sun and 0.975 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 7221 |
| Provisional designation | 1981 SJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.60 km (#16,073 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.262 |
| Rotation period | 2.82 hours |
| Absolute magnitude (H) | 15.05 |
| Orbital period | 3.74 years |
| Semi-major axis | 2.41 au |
| Perihelion – aphelion | 1.89 – 2.93 au |
| Eccentricity | 0.218 |
| Inclination | 1.27° |
| Closest distance between its orbit and Earth's (MOID) | 0.876 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called Jan