(28969) Youngminjeongahn Main-belt Asteroid
Discovered on 25 April 2001 by LONEOS at Anderson Mesa.
Youngmin JeongAhn (b. 1980) is a postdoctoral researcher at Korea Astronomy and Space Science Institute (Daejeon, South Korea) who works on dynamics of small solar system bodies. He has discovered more than one hundred asteroids including four near-Earth objects and twenty Jupiter trojans.Naming citation (WGSBN Bull. 1, #2, 12), IAU / Minor Planet Center, via NASA/JPL
Where Youngminjeongahn is today
Seen from above the solar system on 2026-10-14: Youngminjeongahn is 2.05 au from the Sun and 1.47 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 28969 |
| Provisional designation | 2001 HM57 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.82 km (#6,757 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0600 |
| Rotation period | 4.28 hours |
| Absolute magnitude (H) | 14.54 |
| Orbital period | 4.08 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 1.94 – 3.17 au |
| Eccentricity | 0.242 |
| Inclination | 13.9° |
| Closest distance between its orbit and Earth's (MOID) | 0.920 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.