(21337) Sansepolcro Main-belt Asteroid
Discovered on 17 January 1997 by Boattini, A., Di Paola, A. at Campo Imperatore.
Sansepolcro is a historic town in Tuscany (Italy) that was a center of the Renaissance culture and the birthplace of the early Renaissance painter Piero della Francesca. Sansepolcro 's Civic Museum houses some of Piero's most important masterpieces.Naming citation (WGSBN Bull. 4, #1, 5), IAU / Minor Planet Center, via NASA/JPL
Where Sansepolcro is today
Seen from above the solar system on 2026-10-14: Sansepolcro is 2.80 au from the Sun and 2.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21337 |
| Provisional designation | 1997 BN9 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 13.94 |
| Orbital period | 5.13 years |
| Semi-major axis | 2.97 au |
| Perihelion – aphelion | 2.74 – 3.20 au |
| Eccentricity | 0.0772 |
| Inclination | 9.67° |
| Closest distance between its orbit and Earth's (MOID) | 1.76 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.