(90821) Augustsedlacek Main-belt Asteroid
Discovered on 26 September 1995 by Z. Moravec M. Tichý at Klet.
August Sedláček (1843–1926) was a Czech historian, archivist and genealogist. Originally a high school teacher, in his retirement he served as the director of the Museum in Písek. His main work was the fifteen-volume Castles, Chateaux and Strongholds of the Kingdom of Bohemia, published between 1882 and 1927.Naming citation (WGSBN Bull. 3, #10, 8), IAU / Minor Planet Center, via NASA/JPL
Where Augustsedlacek is today
Seen from above the solar system on 2026-10-14: Augustsedlacek is 2.37 au from the Sun and 1.38 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 90821 |
| Provisional designation | 1995 SA2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.52 km (#16,216 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.333 |
| Absolute magnitude (H) | 15.21 |
| Orbital period | 4.43 years |
| Semi-major axis | 2.70 au |
| Perihelion – aphelion | 2.07 – 3.32 au |
| Eccentricity | 0.230 |
| Inclination | 6.08° |
| Closest distance between its orbit and Earth's (MOID) | 1.10 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 26 September 1995
- (8561) Sikoruk
- (8717) Richviktorov
- (11102) Bertorighini
- (11600) Cipolla
- (12410) Donald Duck
- (12413) Johnnyweir
- (12414) Bure
- (16711) Ka-Dar
- (32931) Ferioli
- (48631) Hasantufan