(21858) Gosal Main-belt Asteroid
Discovered on 7 October 1999 by LINEAR at Socorro.
Anudeep D. Gosal (b. 1991) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his earth & space science project. He attends the Hunter's Creek Middle School, Orlando, Florida.Naming citation (20051019/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Gosal is today
Seen from above the solar system on 2026-10-14: Gosal is 2.98 au from the Sun and 3.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21858 |
| Provisional designation | 1999 TY155 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.15 km (#8,713 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.107 |
| Absolute magnitude (H) | 13.76 |
| Orbital period | 5.04 years |
| Semi-major axis | 2.94 au |
| Perihelion – aphelion | 2.76 – 3.12 au |
| Eccentricity | 0.0598 |
| Inclination | 3.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.75 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 7 October 1999
- (12931) Mario
- (16089) Lamb
- (16090) Lukaszewski
- (16091) Malchiodi
- (19704) Medlock
- (20643) Angelicaliu
- (20644) Amritdas
- (20645) Ryderstrauss
- (20646) Nikhilgupta
- (20647) Ryujiokazaki
- (21850) Abshir
- (21852) Bolander