(33488) Darrelrobertson Main-belt Asteroid
Discovered on 10 April 1999 by LONEOS at Anderson Mesa.
Darrel Kim Robertson (b. 1974) is an American research engineer at NASA Ames Research Center. He works on asteroid planetary defense and studies of the meteoroid impact hazard to spacecraft, and developed hydrodynamic models of asteroid and meteoroid ablation and fragmentation.Naming citation (WGSBN Bull. 3, #9, 30), IAU / Minor Planet Center, via NASA/JPL
Where Darrelrobertson is today
Seen from above the solar system on 2026-10-14: Darrelrobertson is 2.44 au from the Sun and 2.88 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 33488 |
| Provisional designation | 1999 GD9 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.75 km (#6,827 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0550 |
| Absolute magnitude (H) | 14.52 |
| Orbital period | 4.05 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.41 – 2.67 au |
| Eccentricity | 0.0519 |
| Inclination | 12.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.43 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 10 April 1999
- (16036) Moroz
- (16037) Sheehan
- (17061) Tegler
- (17062) Bardot
- (17920) Zarnecki
- (18750) Leonidakimov
- (27224) Telus
- (29873) Bertachini
- (31605) Braschi
- (31613) Adamgreenberg
- (33486) Edreynolds
- (33487) Jeanpierrerivet