(27257) Tang-Quan Main-belt Asteroid
Discovered on 6 December 1999 by LINEAR at Socorro.
David Kenneth Tang-Quan (b. 1992) was a finalist in the 2010 Intel Science Talent Search, a science competition for high-school seniors, for his microbiology project. He attends the Palos Verdes Peninsula High School, Rolling Hills Estates, California, U.S.A.Naming citation (20110319/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Tang-Quan is today
Seen from above the solar system on 2026-10-14: Tang-Quan is 2.58 au from the Sun and 1.77 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 27257 |
| Provisional designation | 1999 XG34 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.96 km (#15,309 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.291 |
| Absolute magnitude (H) | 14.9 |
| Orbital period | 3.46 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.99 – 2.58 au |
| Eccentricity | 0.129 |
| Inclination | 6.79° |
| Closest distance between its orbit and Earth's (MOID) | 0.996 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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