(20737) Sungkicho Main-belt Asteroid
Discovered on 12 December 1999 by LINEAR at Socorro.
Sungki Cho (b. 1967) is a Korean researcher at the Korea Astronomy and Space Science Institute. He is the principal investigator of the Near Space Optical Survey to discover potentially-hazardous asteroids from the southern hemisphere, and is also involved in the OWL-Net project, which uses a global network of automated telescopes.Naming citation (WGSBN Bull. 6, #11, 35), IAU / Minor Planet Center, via NASA/JPL
Where Sungkicho is today
Seen from above the solar system on 2026-10-14: Sungkicho is 2.93 au from the Sun and 3.08 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20737 |
| Provisional designation | 1999 XJ189 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.36 km (#7,252 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.188 |
| Absolute magnitude (H) | 13.33 |
| Orbital period | 5.28 years |
| Semi-major axis | 3.03 au |
| Perihelion – aphelion | 2.85 – 3.22 au |
| Eccentricity | 0.0623 |
| Inclination | 10.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.86 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 12 December 1999
- (14234) Davidhoover
- (16148) Amaraifeji
- (17193) Alexeybaran
- (22038) Margarshain
- (24259) Chriswalker
- (24261) Judilegault
- (24289) Anthonypalma
- (24292) Susanragan
- (25531) Lessek
- (25570) Kesun
- (25573) Wanghaoyu
- (26422) Marekbuchman