(26399) Rileyennis Main-belt Asteroid
Discovered on 15 November 1999 by LINEAR at Socorro.
Riley C. Ennis (b. 1993) was awarded second place in the 2010 Intel International Science and Engineering Fair for his cellular- and molecular-biology project. He attends the Thomas Jefferson High School for Science and Technology, Alexandria, Virginia, U.S.A.Naming citation (20110319/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Rileyennis is today
Seen from above the solar system on 2026-10-14: Rileyennis is 2.52 au from the Sun and 1.67 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 26399 |
| Provisional designation | 1999 VG189 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 20.0 hours |
| Absolute magnitude (H) | 15.67 |
| Orbital period | 3.39 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 1.99 – 2.52 au |
| Eccentricity | 0.119 |
| Inclination | 4.36° |
| Closest distance between its orbit and Earth's (MOID) | 0.982 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Riley
All asteroids named after someone called Riley
Also discovered on 15 November 1999
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- (21958) Tripuraneni
- (23014) Walstein
- (23016) Michaelroche
- (23017) Advincula
- (23018) Annmoriarty
- (24149) Raghavan
- (24152) Ramasesh
- (24153) Davidalex
- (24154) Ayonsen
- (24155) Serganov
- (24156) Hamsasridhar