(28610) Stephenriggs Main-belt Asteroid
Discovered on 12 March 2000 by LONEOS at Anderson Mesa.
Stephen Riggs (b. 1956) is Lowell Observatory's Senior Philanthropy Manager, overseeing the annual and planned giving programs, resulting in a significant increase in present and future revenue. Stephen has had a distinguished career in philanthropy and is a valued member of the Lowell community.Naming citation (WGSBN Bull. 2, #13, 7), IAU / Minor Planet Center, via NASA/JPL
Where Stephenriggs is today
Seen from above the solar system on 2026-10-14: Stephenriggs is 2.42 au from the Sun and 1.47 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 28610 |
| Provisional designation | 2000 EM158 |
| Orbit class | Main-belt Asteroid |
| Diameter | 14.2 km (#3,340 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0710 |
| Rotation period | 3.29 hours |
| Absolute magnitude (H) | 12.9 |
| Orbital period | 4.16 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 1.96 – 3.22 au |
| Eccentricity | 0.244 |
| Inclination | 15.7° |
| Closest distance between its orbit and Earth's (MOID) | 0.952 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Stephen
- (5190) Fry
- (5191) Paddack
- (5292) Mackwell
- (5657) Groombridge
- (7336) Saunders
- (7672) Hawking
- (8373) Stephengould
- (9768) Stephenmaran
- (9891) Stephensmith
- (10287) Smale
- (10315) Brewster
- (12984) Lowry
All asteroids named after someone called Stephen
Also discovered on 12 March 2000
- (27410) Grimmett
- (27420) Shontobegay
- (28608) Sblomquist
- (28609) Tsirvoulis
- (33834) Hannahkaplan
- (47851) Budine