(13577) Ukawa Main-belt Asteroid
Discovered on 16 April 1993 by Endate, K., Watanabe, K. at Kitami.
Hirohumi Ukawa (b. 1942) mentored many an astronomical amateur and astronomy specialist by the time of his retirement from many years of distinguished services at the Takamatsu Municipal Planetarium. He also acted as the volunteer president of the Astronomical Society of Shikoku during his tenure.Naming citation (20100130/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ukawa is today
Seen from above the solar system on 2026-10-14: Ukawa is 2.03 au from the Sun and 3.02 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13577 |
| Provisional designation | 1993 HR1 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.91 |
| Orbital period | 3.73 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 2.00 – 2.81 au |
| Eccentricity | 0.167 |
| Inclination | 3.05° |
| Closest distance between its orbit and Earth's (MOID) | 0.996 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 16 April 1993
- (6104) Takao
- (6200) Hachinohe
- (6201) Ichiroshimizu
- (6919) Tomonaga
- (9067) Katsuno
- (9375) Omodaka
- (9971) Ishihara
- (10555) Tagaharue
- (13576) Gotoyoshi
- (16624) Hoshizawa
- (21148) Billramsey