(18771) Sisiliang Main-belt Asteroid
Discovered on 10 May 1999 by LINEAR at Socorro.
Sisi Liang (b. 1985) was awarded third place in the 2003 Intel International Science and Engineering Fair for her earth and space sciences team project. She attends the Robert F. Kennedy High School, Flushing, New York, U.S.A.Naming citation (20040830/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sisiliang is today
Seen from above the solar system on 2026-10-14: Sisiliang is 2.16 au from the Sun and 1.24 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18771 |
| Provisional designation | 1999 JA26 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.71 km (#9,386 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0540 |
| Absolute magnitude (H) | 15.34 |
| Orbital period | 3.72 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 1.95 – 2.86 au |
| Eccentricity | 0.190 |
| Inclination | 2.15° |
| Closest distance between its orbit and Earth's (MOID) | 0.934 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 10 May 1999
- (11219) Benbohn
- (11225) Borden
- (11227) Ksenborisova
- (11228) Botnick
- (11229) Brookebowers
- (11230) Deschaffer
- (11231) Schiavo
- (11413) Catanach
- (11414) Allanchu
- (12117) Meagmessina
- (16048) Eddiedai
- (16049) D'Amore