(21436) Chaoyichi Main-belt Asteroid
Discovered on 31 March 1998 by LINEAR at Socorro.
Chao Yi-Chi (b. 1988) was awarded first place and Best in Category in the 2006 Intel International Science and Engineering Fair for her zoology project. She also received the Seaborg SIYSS Award. She attends the Affiliated Senior High School Of NTNU, Taipei, Taiwan, Chinese Taipei.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Chaoyichi is today
Seen from above the solar system on 2026-10-14: Chaoyichi is 2.01 au from the Sun and 2.37 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21436 |
| Provisional designation | 1998 FL116 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.95 km (#17,080 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.222 |
| Rotation period | 2.87 hours |
| Absolute magnitude (H) | 15.51 |
| Orbital period | 3.23 years |
| Semi-major axis | 2.19 au |
| Perihelion – aphelion | 2.00 – 2.37 au |
| Eccentricity | 0.0850 |
| Inclination | 3.73° |
| Closest distance between its orbit and Earth's (MOID) | 1.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 31 March 1998
- (9458) Beaumont
- (9459) Gracecai
- (11178) Emmajoy
- (11179) Ahmadperez
- (11180) Brentperlman
- (11697) Estrella
- (11698) Fichtelman
- (11701) Madeleineyang
- (11702) Mifischer
- (12506) Pariser
- (12508) Darcysloe
- (12509) Pathak