(4565) Grossman Main-belt Asteroid
Discovered on 2 March 1981 by S. J. Bus at Siding Spring.
Chairman of the Department of Geophysical Sciences at the University of Chicago, Lawrence Grossman (b. 1946) has spent his career studying calcium-aluminum inclusions (CAIs) in carbonaceous chondrites. He was among the first to propose that these minerals condensed from gases in the early solar system.Naming citation (20001013/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Grossman is today
Seen from above the solar system on 2026-10-14: Grossman is 2.25 au from the Sun and 3.24 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4565 |
| Provisional designation | 1981 EZ17 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.36 km (#7,256 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.271 |
| Rotation period | 4.74 hours |
| Absolute magnitude (H) | 13.08 |
| Orbital period | 4.12 years |
| Semi-major axis | 2.57 au |
| Perihelion – aphelion | 2.25 – 2.89 au |
| Eccentricity | 0.125 |
| Inclination | 14.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.26 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 2 March 1981
- (2884) Reddish
- (2919) Dali
- (2980) Cameron
- (2981) Chagall
- (2990) Trimberger
- (3000) Leonardo
- (3121) Tamines
- (3122) Florence
- (3207) Spinrad
- (3252) Johnny
- (3304) Pearce
- (3524) Schulz