(4320) Jarosewich Main-belt Asteroid
Discovered on 1 March 1981 by S. J. Bus at Siding Spring.
Eugene Jarosewich (b. 1926), research chemist emeritus at the Smithsonian Institution, has analyzed meteorites for more than 30 years and compiled one of the largest and most important sets of bulk chemical analyses of meteorites. These data are invaluable for deciphering geochemical processing of meteorites.Naming citation (20001013/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Jarosewich is today
Seen from above the solar system on 2026-10-14: Jarosewich is 2.08 au from the Sun and 3.01 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4320 |
| Provisional designation | 1981 EJ17 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.70 km (#15,862 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.184 |
| Absolute magnitude (H) | 15.09 |
| Orbital period | 3.26 years |
| Semi-major axis | 2.20 au |
| Perihelion – aphelion | 1.95 – 2.45 au |
| Eccentricity | 0.113 |
| Inclination | 6.45° |
| Closest distance between its orbit and Earth's (MOID) | 0.977 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Eugene
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- (11726) Edgerton
- (11756) Geneparker
- (12790) Cernan
- (13178) Catalan
- (15363) Ysaye
- (15822) Genefahnestock
- (32564) Glass
- (34524) Eugenerivera
- (34838) Lazowski
- (55397) Hackman
- (207319) Eugenemar
All asteroids named after someone called Eugene
Also discovered on 1 March 1981
- (2788) Andenne
- (3016) Meuse
- (3029) Sanders
- (3030) Vehrenberg
- (3042) Zelinsky
- (3058) Delmary
- (3075) Bornmann
- (3135) Lauer
- (3308) Ferreri
- (3472) Upgren
- (3498) Belton
- (3503) Brandt