(20455) Pennell Main-belt Asteroid
Discovered on 9 June 1999 by LINEAR at Socorro.
Jordan William Pennell (b. 1990) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his behavioral science project. He attends the Our Saviour School, Jacksonville, Illinois.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Pennell is today
Seen from above the solar system on 2026-10-14: Pennell is 2.50 au from the Sun and 3.22 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20455 |
| Provisional designation | 1999 LE4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.76 km (#15,743 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.336 |
| Absolute magnitude (H) | 14.83 |
| Orbital period | 3.55 years |
| Semi-major axis | 2.33 au |
| Perihelion – aphelion | 2.03 – 2.62 au |
| Eccentricity | 0.128 |
| Inclination | 6.79° |
| Closest distance between its orbit and Earth's (MOID) | 1.02 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Jordan
All asteroids named after someone called Jordan
Also discovered on 9 June 1999
- (11423) Cronin
- (17162) Nithinkavi
- (17163) Vasifedoseev
- (19573) Cummings
- (19574) Davidedwards
- (19575) Feeny
- (19577) Bobbyfisher
- (20454) Pedrajo
- (20458) Koshkin
- (20459) Krzysztoflangner
- (21622) Victorshia
- (21623) Albertshieh