(21616) Guhagilford Main-belt Asteroid
Discovered on 12 May 1999 by LINEAR at Socorro.
Tristan Guha-Gilford (b. 1987) was awarded second place in the 2005 Intel International Science and Engineering Fair for his physics team project. He attends the Eleanor Roosevelt High School, Greenbelt, Maryland, U.S.A.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Guhagilford is today
Seen from above the solar system on 2026-10-14: Guhagilford is 2.56 au from the Sun and 2.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21616 |
| Provisional designation | 1999 JQ82 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.56 km (#16,142 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.426 |
| Rotation period | 19.4 hours |
| Absolute magnitude (H) | 14.54 |
| Orbital period | 3.61 years |
| Semi-major axis | 2.35 au |
| Perihelion – aphelion | 2.06 – 2.65 au |
| Eccentricity | 0.127 |
| Inclination | 6.74° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Tristan
All asteroids named after someone called Tristan
Also discovered on 12 May 1999
- (16059) Marybuda
- (16060) Dahliadry
- (17124) Rishavalera
- (17125) Vijayakumar
- (17126) Sophiawang
- (17127) Ryanwestcott
- (17131) Paulazhu
- (17138) Burgosrosario
- (17139) Malyshev
- (17140) Yangkevin
- (17141) Bhatia
- (17143) Andrewbrinton