(12603) Tanchunghee Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
Tan Chun Ghee (b. 1984) is a finalist in the 2002 Intel International Science and Engineering Fair for his chemistry project. He attends the Raffles Junior College, Singapore, Singapore.Naming citation (20020724/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Tanchunghee is today
Seen from above the solar system on 2026-10-14: Tanchunghee is 2.66 au from the Sun and 3.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12603 |
| Provisional designation | 1999 RF184 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.43 km (#16,395 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.394 |
| Rotation period | 5.81 hours |
| Absolute magnitude (H) | 15.16 |
| Orbital period | 3.63 years |
| Semi-major axis | 2.36 au |
| Perihelion – aphelion | 1.90 – 2.83 au |
| Eccentricity | 0.197 |
| Inclination | 3.22° |
| Closest distance between its orbit and Earth's (MOID) | 0.908 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Tan
All asteroids named after someone called Tan
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