(6789) Milkey Main-belt Asteroid
Discovered on 4 September 1991 by E. F. Helin at Palomar.
Robert Milkey (b. 1944) served as executive officer of the American Astronomical Society during 1995-2006. During his tenure he expanded and enhanced the society's journals---especially their electronic versions, improved its financial health and increased the range of its activities in education and public policy.Naming citation (20060613/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Milkey is today
Seen from above the solar system on 2026-10-14: Milkey is 2.55 au from the Sun and 2.81 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 6789 |
| Provisional designation | 1991 RM6 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.2 |
| Orbital period | 3.58 years |
| Semi-major axis | 2.34 au |
| Perihelion – aphelion | 2.01 – 2.67 au |
| Eccentricity | 0.141 |
| Inclination | 6.17° |
| Closest distance between its orbit and Earth's (MOID) | 1.03 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Robert
- (1955) McMath
- (3514) Hooke
- (3875) Staehle
- (4564) Clayton
- (4809) Robertball
- (5109) Robertmiller
- (5308) Hutchison
- (5477) Holmes
- (5585) Parks
- (5636) Jacobson
- (5739) Robertburns
- (5817) Robertfrazer
All asteroids named after someone called Robert
Also discovered on 4 September 1991
- (7420) Buffon
- (8370) Vanlindt
- (8515) Corvan
- (9346) Fernandel
- (9594) Garstang
- (10784) Noailles
- (10785) Dejaiffe
- (11059) Nulliusinverba
- (12301) Eotvos
- (13533) Junili
- (13534) Alain-Fournier
- (21073) Darksky