(248321) Cester Main-belt Asteroid
Discovered on 14 August 2005 by V. S. Casulli at Vallemare Borbona.
Bruno Cester (1920–2017) was an Italian physicist and astronomer, who studied double and variable stars at the Trieste Astronomical Observatory. He published numerous university texts.Naming citation (WGSBN Bull. 1, #10, 7), IAU / Minor Planet Center, via NASA/JPL
Where Cester is today
Seen from above the solar system on 2026-10-14: Cester is 3.40 au from the Sun and 4.18 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 248321 |
| Provisional designation | 2005 PL20 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.73 km (#17,258 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.196 |
| Absolute magnitude (H) | 16.44 |
| Orbital period | 4.69 years |
| Semi-major axis | 2.80 au |
| Perihelion – aphelion | 2.20 – 3.40 au |
| Eccentricity | 0.213 |
| Inclination | 15.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.20 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Bruno
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All asteroids named after someone called Bruno