(21416) Sisichen Main-belt Asteroid
Discovered on 20 March 1998 by LINEAR at Socorro.
Sisi Monica Chen (b. 1987) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for her mathematics project. She attends the Northview High School, Duluth, Georgia.Naming citation (20050224/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sisichen is today
Seen from above the solar system on 2026-10-14: Sisichen is 2.56 au from the Sun and 2.31 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21416 |
| Provisional designation | 1998 FN70 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.84 |
| Orbital period | 3.75 years |
| Semi-major axis | 2.41 au |
| Perihelion – aphelion | 2.05 – 2.78 au |
| Eccentricity | 0.151 |
| Inclination | 6.52° |
| Closest distance between its orbit and Earth's (MOID) | 1.05 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Sisi
All asteroids named after someone called Sisi
Also discovered on 20 March 1998
- (8744) Cilla
- (8745) Delaney
- (8954) Baral
- (9126) Samcoulson
- (9243) Alag
- (9454) Ardeishar
- (11169) Alkon
- (11170) Bradenmilford
- (11173) Jayanderson
- (11174) Carandrews
- (11176) Batth
- (11685) Adamcurry