(43998) Nanyoshino Main-belt Asteroid
Discovered on 28 August 1997 by T. Okuni at Nanyo.
Nanyo Yoshinogawa is the river that flows through the center of Nanyo City, Yamagata prefecture, and joins Mogami River. The length is 31 kilometers and it is an important source of agricultural water.Naming citation (MPC batch dated 2015-01-05), IAU / Minor Planet Center, via NASA/JPL
Where Nanyoshino is today
Seen from above the solar system on 2026-10-14: Nanyoshino is 3.63 au from the Sun and 2.79 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 43998 |
| Provisional designation | 1997 QB3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 13.9 km (#3,435 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0440 |
| Absolute magnitude (H) | 13.48 |
| Orbital period | 5.62 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.53 – 3.79 au |
| Eccentricity | 0.200 |
| Inclination | 16.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.58 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.