(10219) Penco Main-belt Asteroid
Discovered on 25 October 1997 by Tesi, L., Boattini, A. at San Marcello.
Named in honor of Italian physicist Umberto Penco. After teaching high school for several years, he became a researcher in the department of physics at the University of Pisa. He has worked in astrophysics, most recently on mathematical models of chemical evolution of galaxies, and he maintains an interest in science education at secondary-school level, training teachers in astronomy and physics. Penco has assisted the San Marcello Observatory as a scientific consultant since it was first established, and he has given advice especially on the selection and improvement of the optical instrumentation.Naming citation (19990728/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Penco is today
Seen from above the solar system on 2026-10-14: Penco is 2.48 au from the Sun and 2.81 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10219 |
| Provisional designation | 1997 UJ5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.41 km (#14,195 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.264 |
| Absolute magnitude (H) | 14.81 |
| Orbital period | 3.51 years |
| Semi-major axis | 2.31 au |
| Perihelion – aphelion | 2.08 – 2.53 au |
| Eccentricity | 0.0981 |
| Inclination | 4.38° |
| Closest distance between its orbit and Earth's (MOID) | 1.07 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Umberto
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- (37749) Umbertobonori
- (79991) Umbertoleotti
- (135910) Umbertorepetti
All asteroids named after someone called Umberto
Also discovered on 25 October 1997
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