(30785) Greeley Mars-crossing Asteroid
Discovered on 13 August 1988 by Shoemaker, C. S., Shoemaker, E. M. at Palomar.
Ronald Greeley (b. 1939) has been involved in lunar and planetary studies since 1967. His current research focuses on understanding planetary surface processes and geological histories and involves a combination of spacecraft data analysis, laboratory experiments and geological field studies on the earth.Naming citation (20030501/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Greeley is today
Seen from above the solar system on 2026-10-14: Greeley is 2.67 au from the Sun and 3.62 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 30785 |
| Provisional designation | 1988 PX |
| Orbit class | Mars-crossing Asteroid |
| Absolute magnitude (H) | 16.66 |
| Orbital period | 3.27 years |
| Semi-major axis | 2.20 au |
| Perihelion – aphelion | 1.44 – 2.96 au |
| Eccentricity | 0.345 |
| Inclination | 5.40° |
| Closest distance between its orbit and Earth's (MOID) | 0.437 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Ronald
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- (3579) Rockholt
- (6949) Zissell
- (9852) Gora
- (9923) Ronaldthiel
- (10508) Haughey
- (11724) Ronaldhsu
- (13497) Ronstone
- (16813) Ronmastaler
- (17853) Ronaldsayer
- (18239) Ekers
- (20465) Vervack
All asteroids named after someone called Ronald
Also discovered on 13 August 1988
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- (4347) Reger
- (4379) Snelling
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- (5471) Tunguska
- (5866) Sachsen
- (6549) Skryabin
- (8826) Corneville
- (8827) Kollwitz
- (9315) Weigel
- (12240) Droste-Hulshoff
- (12241) Lefort