(28251) Gerbaldi Main-belt Asteroid
Discovered on 20 January 1999 by ODAS at Caussols.
Michele Gerbaldi (b. 1944) is a French astronomer specializing in stellar astrophysics. She worked at the Institut d´Astrophysique de Paris from 1968 to 2007. She is one of the founding member of CLEA (Comité de Liaison Enseignants et Astronomes) and has also been very active in the IAU's ISYA program.Naming citation (MPC batch dated 2017-01-12), IAU / Minor Planet Center, via NASA/JPL
Where Gerbaldi is today
Seen from above the solar system on 2026-10-14: Gerbaldi is 2.78 au from the Sun and 2.56 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 28251 |
| Provisional designation | 1999 BW13 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.24 km (#12,175 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.171 |
| Absolute magnitude (H) | 14.58 |
| Orbital period | 5.02 years |
| Semi-major axis | 2.93 au |
| Perihelion – aphelion | 2.59 – 3.27 au |
| Eccentricity | 0.115 |
| Inclination | 2.92° |
| Closest distance between its orbit and Earth's (MOID) | 1.60 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called Michele
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