(22911) Johnpardon Main-belt Asteroid
Discovered on 4 October 1999 by LINEAR at Socorro.
John Vincent Pardon (b. 1989) is a finalist in the 2007 Intel Science Talent Search (STS), a science competition for high school seniors, for his mathematics project. He attends the Durham Academy Upper School, Durham, North Carolina.Naming citation (20070303/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Johnpardon is today
Seen from above the solar system on 2026-10-14: Johnpardon is 2.41 au from the Sun and 2.32 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 22911 |
| Provisional designation | 1999 TX30 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.48 km (#16,292 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.314 |
| Absolute magnitude (H) | 15.32 |
| Orbital period | 3.27 years |
| Semi-major axis | 2.20 au |
| Perihelion – aphelion | 2.00 – 2.41 au |
| Eccentricity | 0.0938 |
| Inclination | 1.91° |
| Closest distance between its orbit and Earth's (MOID) | 0.982 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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