(7159) Bobjoseph Main-belt Asteroid
Discovered on 1 March 1981 by S. J. Bus at Siding Spring.
Robert D. Joseph (b. 1939), a professor of astronomy at the University of Hawaii, is an expert in infrared studies of extragalactic star formation. From 1989 to 2000, he served as division chief for the NASA Infrared Telescope Facility on Mauna Kea.Naming citation (20050721/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Bobjoseph is today
Seen from above the solar system on 2026-10-14: Bobjoseph is 2.65 au from the Sun and 3.63 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 7159 |
| Provisional designation | 1981 EN17 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.77 km (#13,299 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.313 |
| Absolute magnitude (H) | 14.41 |
| Orbital period | 3.47 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.89 – 2.69 au |
| Eccentricity | 0.174 |
| Inclination | 4.58° |
| Closest distance between its orbit and Earth's (MOID) | 0.893 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 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
More named asteroids discovered by S. J. Bus
- (2285) Ron Helin
- (2780) Monnig
- (2791) Paradise
- (2884) Reddish
- (2919) Dali
- (2980) Cameron
- (2981) Chagall
- (2990) Trimberger
- (3000) Leonardo
- (3029) Sanders
- (3030) Vehrenberg
- (3042) Zelinsky
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