(19165) Nariyuki Main-belt Asteroid
Discovered on 4 February 1991 by Endate, K., Watanabe, K. at Kitami.
Kiyoshi Nariyuki (b. 1960) has played an active part in astronomical clubs in his area, often becoming their leader in his pursuit of amateur astronomy over the past 30 years. A 0.25-m telescope is installed in the private observatory he completed in 2005.Naming citation (MPC batch dated 2017-06-09), IAU / Minor Planet Center, via NASA/JPL
Where Nariyuki is today
Seen from above the solar system on 2026-10-14: Nariyuki is 2.42 au from the Sun and 3.21 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19165 |
| Provisional designation | 1991 CD |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.46 km (#14,062 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.487 |
| Absolute magnitude (H) | 13.83 |
| Orbital period | 3.47 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 2.12 – 2.46 au |
| Eccentricity | 0.0746 |
| Inclination | 7.80° |
| Closest distance between its orbit and Earth's (MOID) | 1.15 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Kiyoshi
All asteroids named after someone called Kiyoshi