(38423) Jeokjungchogye Outer Main-belt Asteroid
Discovered on 5 September 1999 by CSS at Catalina.
The Jeokjung-Chogye Basin, a 7 km-wide impact crater in Hapcheon, South Korea, is the only known impact structure on the Korean Peninsula. Estimated to have formed between 30 000 and 63 000 years ago during the late Pleistocene, it is one of the youngest large impact craters on Earth.Naming citation (WGSBN Bull. 5, #19, 7), IAU / Minor Planet Center, via NASA/JPL
Where Jeokjungchogye is today
Seen from above the solar system on 2026-10-14: Jeokjungchogye is 3.42 au from the Sun and 4.15 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 38423 |
| Provisional designation | 1999 RS226 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 8.74 km (#5,971 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0640 |
| Rotation period | 6.39 hours |
| Absolute magnitude (H) | 14.15 |
| Orbital period | 5.74 years |
| Semi-major axis | 3.20 au |
| Perihelion – aphelion | 2.98 – 3.43 au |
| Eccentricity | 0.0711 |
| Inclination | 21.6° |
| Closest distance between its orbit and Earth's (MOID) | 2.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 5 September 1999
- (12576) Oresme
- (12579) Ceva
- (16064) Davidharvey
- (19691) Iwate
- (20606) Widemann
- (21665) Frege
- (21678) Lindner
- (21775) Tsiganis
- (21776) Kryszczynska
- (42910) Samanthalawler
- (59804) Dickjoyce
- (59828) Ossikar