(24857) Sperello Main-belt Asteroid
Discovered on 15 January 1996 by Munari, U., Tombelli, M. at Cima Ekar.
Sperello di Serego Alighieri (b. 1952) is an Italian astrophysicist who made major contributions to the field of extragalactic astronomy. He is a descendant of Dante Alighieri.Naming citation (WGSBN Bull. 4, #13, 5), IAU / Minor Planet Center, via NASA/JPL
Where Sperello is today
Seen from above the solar system on 2026-10-14: Sperello is 2.00 au from the Sun and 2.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 24857 |
| Provisional designation | 1996 AH4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.63 km (#17,301 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.266 |
| Absolute magnitude (H) | 15.69 |
| Orbital period | 3.40 years |
| Semi-major axis | 2.26 au |
| Perihelion – aphelion | 2.00 – 2.51 au |
| Eccentricity | 0.113 |
| Inclination | 6.72° |
| Closest distance between its orbit and Earth's (MOID) | 1.02 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 15 January 1996
- (7794) Sanvito
- (12433) Barbieri
- (14057) Manfredstoll
- (14947) Luigibussolino
- (23608) Alpiapuane
- (24856) Messidoro
- (69423) Openuni