(21970) Tyle Main-belt Asteroid
Discovered on 1 December 1999 by LINEAR at Socorro.
Sheel Tyle (b. 1991) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his biochemistry, medicine, health, & microbiology project. He attends the Pittsford Middle School, Pittsford, New York.Naming citation (20051019/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Tyle is today
Seen from above the solar system on 2026-10-14: Tyle is 2.34 au from the Sun and 3.18 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21970 |
| Provisional designation | 1999 XC |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.54 |
| Orbital period | 3.49 years |
| Semi-major axis | 2.30 au |
| Perihelion – aphelion | 1.91 – 2.69 au |
| Eccentricity | 0.169 |
| Inclination | 6.14° |
| Closest distance between its orbit and Earth's (MOID) | 0.915 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.