(16357) Risanpei Main-belt Asteroid
Discovered on 22 October 1976 by Kosai, H., Hurukawa, K. at Kiso.
Ri Sanpei (d. 1655), (Li Sam Pyung in Korean) was one of the potters who was taken from the north-west Korean Peninsula to the north-west of Kyushu Island in 1598. Name suggested by K. Hurukawa.Naming citation (20130127/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Risanpei is today
Seen from above the solar system on 2026-10-14: Risanpei is 2.56 au from the Sun and 3.48 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 16357 |
| Provisional designation | 1976 UP18 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 7.37 hours |
| Absolute magnitude (H) | 15.51 |
| Orbital period | 3.48 years |
| Semi-major axis | 2.30 au |
| Perihelion – aphelion | 1.87 – 2.72 au |
| Eccentricity | 0.185 |
| Inclination | 6.42° |
| Closest distance between its orbit and Earth's (MOID) | 0.884 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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Also discovered on 22 October 1976
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