(15316) Okagakimachi Main-belt Asteroid
Discovered on 20 April 1993 by Endate, K., Watanabe, K. at Kitami.
Okagakimachi is a small town in Fukuoka Prefecture, west Japan, where the Hokuto Sichisei (the Big Dipper) appears to dip into the Sea of Genkai at lower culmination in the early morning during the summer and autumn.Naming citation (MPC batch dated 2017-03-12), IAU / Minor Planet Center, via NASA/JPL
Where Okagakimachi is today
Seen from above the solar system on 2026-10-14: Okagakimachi is 2.58 au from the Sun and 2.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15316 |
| Provisional designation | 1993 HH1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.31 km (#14,442 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.284 |
| Rotation period | 2.65 hours |
| Absolute magnitude (H) | 14.66 |
| Orbital period | 3.47 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.91 – 2.67 au |
| Eccentricity | 0.166 |
| Inclination | 0.761° |
| Closest distance between its orbit and Earth's (MOID) | 0.901 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.