(18857) Lalchandani Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
Rupa Lalchandani (b. 1986) was awarded third place in the 2003 Intel International Science and Engineering Fair for her medicine and health team project. She attends the Mira Loma High School, Sacramento, California, U.S.A.Naming citation (20040830/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Lalchandani is today
Seen from above the solar system on 2026-10-14: Lalchandani is 2.39 au from the Sun and 3.39 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18857 |
| Provisional designation | 1999 RE117 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.01 km (#15,201 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.372 |
| Rotation period | 209 hours |
| Absolute magnitude (H) | 14.64 |
| Orbital period | 3.57 years |
| Semi-major axis | 2.34 au |
| Perihelion – aphelion | 2.16 – 2.51 au |
| Eccentricity | 0.0741 |
| Inclination | 5.89° |
| Closest distance between its orbit and Earth's (MOID) | 1.18 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 9 September 1999
- (12127) Mamiya
- (12130) Mousa
- (12589) Davidanand
- (12590) Ballantine
- (12591) Bergey
- (12592) Brianchen
- (12593) Shashlov
- (12594) Sidorclare
- (12595) Amandashaw
- (12596) Shukla
- (12597) Williamdaniel
- (12598) Sierra