(11801) Frigeri Main-belt Asteroid
Discovered on 2 March 1981 by S. J. Bus at Siding Spring.
Alessandro Frigeri (b. 1973) is a researcher at the Istituto di Astrofisica e Planetologia Spaziali (IAPS-Rome) who has created spectral parameter maps of Vesta using data from the Dawn spacecraft mission.Naming citation (MPC batch dated 2017-03-12), IAU / Minor Planet Center, via NASA/JPL
Where Frigeri is today
Seen from above the solar system on 2026-10-14: Frigeri is 2.97 au from the Sun and 2.02 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11801 |
| Provisional designation | 1981 EL5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.60 km (#6,069 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.165 |
| Rotation period | 2.13 hours |
| Absolute magnitude (H) | 13.21 |
| Orbital period | 5.32 years |
| Semi-major axis | 3.05 au |
| Perihelion – aphelion | 2.78 – 3.32 au |
| Eccentricity | 0.0887 |
| Inclination | 9.71° |
| Closest distance between its orbit and Earth's (MOID) | 1.79 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Alessandro
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- (48842) Alexmazzanti
- (55196) Marchini
- (70745) Aleserpieri
All asteroids named after someone called Alessandro
Also discovered on 2 March 1981
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- (2919) Dali
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- (3000) Leonardo
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- (3252) Johnny
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