(11981) Boncompagni Main-belt Asteroid
Discovered on 20 October 1995 by Osservatorio San Vittore at Bologna.
Prince Baldassarre Boncompagni (1821-1894) was editor of 20 volumes of Bullettino di Bibliografia e Storia delle Scienze Matematiche e fisiche. This monumental work, published in Rome during 1868-1887, was fundamental in the history of the mathematical and physical sciences, with many articles on the history of astronomy.Naming citation (20010109/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Boncompagni is today
Seen from above the solar system on 2026-10-14: Boncompagni is 2.50 au from the Sun and 2.41 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11981 |
| Provisional designation | 1995 UY1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.75 km (#11,109 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.179 |
| Rotation period | 152 hours |
| Absolute magnitude (H) | 14.53 |
| Orbital period | 4.32 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.48 – 2.83 au |
| Eccentricity | 0.0653 |
| Inclination | 4.69° |
| Closest distance between its orbit and Earth's (MOID) | 1.50 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 20 October 1995
- (6747) Ozegahara
- (6748) Bratton
- (7673) Inohara
- (9212) Kanamaru
- (11984) Manet
- (15846) Billfyfe
- (16715) Trettenero
- (17612) Whiteknight
- (18469) Hakodate
- (48643) Allen-Beach
- (52480) Enzomora
- (65784) Naderayama
More named asteroids discovered by Osservatorio San Vittore
- (2601) Bologna
- (3344) Modena
- (3744) Horn-d'Arturo
- (3809) Amici
- (3951) Zichichi
- (4062) Schiaparelli
- (4063) Euforbo
- (4122) Ferrari
- (4158) Santini
- (4279) De Gasparis
- (4540) Oriani
- (4542) Mossotti
← (11980) Ellis · (11984) Manet →