(15786) Hoshioka Inner Main-belt Asteroid
Discovered on 15 September 1993 by Endate, K., Watanabe, K. at Kitami.
Hoshioka is a kindergarten founded in 1978 by the Matsuyama Gakuen Educational Corporation in Matsuyama City, Ehime Prefecture. It is known for its annual space-themed educational programs in cooperation with the Japan Aerospace Exploration Agency.Naming citation (WGSBN Bull. 2, #14, 5), IAU / Minor Planet Center, via NASA/JPL
Where Hoshioka is today
Seen from above the solar system on 2026-10-14: Hoshioka is 1.91 au from the Sun and 2.19 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15786 |
| Provisional designation | 1993 RS |
| Orbit class | Inner Main-belt Asteroid |
| Diameter | 3.84 km (#13,133 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.274 |
| Rotation period | 6.82 hours |
| Absolute magnitude (H) | 14.52 |
| Orbital period | 2.58 years |
| Semi-major axis | 1.88 au |
| Perihelion – aphelion | 1.79 – 1.97 au |
| Eccentricity | 0.0477 |
| Inclination | 22.5° |
| Closest distance between its orbit and Earth's (MOID) | 0.809 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 15 September 1993
- (8039) Grandprism
- (9381) Lyon
- (10356) Rudolfsteiner
- (10557) Rowland
- (10558) Karlstad
- (11083) Caracas
- (11572) Schindler
- (12356) Carlscheele
- (13113) Williamyeats
- (14911) Fukamatsu
- (17544) Kojiroishikawa
- (19224) Orosei