(10559) Yukihisa Main-belt Asteroid
Discovered on 16 September 1993 by Endate, K., Watanabe, K. at Kitami.
Yukihisa Matsumoto (b. 1962), a former researcher of the Nishi Mino Observatory, now works at the board of education of Fujihashi Village. This amateur astronomer formed a club in his school days and actively participated in astronomical activities.Naming citation (20020328/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Yukihisa is today
Seen from above the solar system on 2026-10-14: Yukihisa is 2.11 au from the Sun and 3.01 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10559 |
| Provisional designation | 1993 SJ1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.13 km (#14,888 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.266 |
| Rotation period | 5.80 hours |
| Absolute magnitude (H) | 14.79 |
| Orbital period | 3.39 years |
| Semi-major axis | 2.26 au |
| Perihelion – aphelion | 1.79 – 2.73 au |
| Eccentricity | 0.208 |
| Inclination | 5.66° |
| Closest distance between its orbit and Earth's (MOID) | 0.777 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 16 September 1993
- (6923) Borzacchini
- (6980) Kyusakamoto
- (8040) Utsumikazuhiko
- (8194) Satake
- (10138) Ohtanihiroshi
- (10821) Kimuratakeshi
- (10822) Yasunori
- (10823) Sakaguchi
- (12357) Toyako
- (16644) Otemaedaigaku
- (19228) Uemuraikuo
- (27815) Katsuhito