(8280) Petergruber Main-belt Asteroid
Discovered on 7 August 1991 by H. E. Holt at Palomar.
Budapest-born Peter Gruber (b. 1929) arrived in the U.S. in 1951 and built up a successful asset-management business. This enabled him to establish the Gruber Foundation with its principal focus of recognizing notable human achievement, including since 2000 an annual Cosmology Prize in conjunction with the IAU.Naming citation (20090806/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Petergruber is today
Seen from above the solar system on 2026-10-14: Petergruber is 3.00 au from the Sun and 2.99 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8280 |
| Provisional designation | 1991 PG16 |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.45 km (#5,448 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0950 |
| Absolute magnitude (H) | 13.9 |
| Orbital period | 5.70 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 2.32 – 4.06 au |
| Eccentricity | 0.272 |
| Inclination | 2.60° |
| Closest distance between its orbit and Earth's (MOID) | 1.32 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Peter
- (2382) Nonie
- (4314) Dervan
- (4507) Petercollins
- (5153) Gierasch
- (7527) Marples
- (7925) Shelus
- (8086) Peterthomas
- (8160) Petererwin
- (8395) Rembaut
- (9207) Petersmith
- (9269) Peterolufemi
- (9399) Pesch
All asteroids named after someone called Peter
Also discovered on 7 August 1991
- (5034) Joeharrington
- (5445) Williwaw
- (5596) Morbidelli
- (6014) Chribrenmark
- (6015) Paularego
- (6016) Carnelli
- (6017) Robertmorehead
- (6018) Pierssac
- (8027) Robertrushworth
More named asteroids discovered by H. E. Holt
- (4502) Elizabethann
- (4642) Murchie
- (4643) Cisneros
- (4711) Kathy
- (4745) Nancymarie
- (4955) Gold
- (4958) Wellnitz
- (5034) Joeharrington
- (5132) Maynard
- (5134) Ebilson
- (5185) Alerossi
- (5235) Jean-Loup
← (8279) Cuzco · (8282) Delp →