(21161) Yamashitaharuo Main-belt Asteroid
Discovered on 15 October 1993 by Endate, K., Watanabe, K. at Kitami.
Haruo Yamashita (b. 1937) is the author of more than 500 works including novels and children's stories. He has been awarded many prizes including the Medal with Purple Ribbon from the Emperor of Japan.Naming citation (MPC batch dated 2017-03-12), IAU / Minor Planet Center, via NASA/JPL
Where Yamashitaharuo is today
Seen from above the solar system on 2026-10-14: Yamashitaharuo is 3.09 au from the Sun and 2.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21161 |
| Provisional designation | 1993 TR1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 19.0 km (#2,356 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0490 |
| Absolute magnitude (H) | 12.79 |
| Orbital period | 5.65 years |
| Semi-major axis | 3.17 au |
| Perihelion – aphelion | 3.03 – 3.31 au |
| Eccentricity | 0.0439 |
| Inclination | 13.8° |
| Closest distance between its orbit and Earth's (MOID) | 2.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Haruo
All asteroids named after someone called Haruo
Also discovered on 15 October 1993
- (6340) Kathmandu
- (6412) Kaifu
- (6413) Iye
- (6981) Chirman
- (7133) Kasahara
- (7254) Kuratani
- (8393) Tetsumasakamoto
- (9632) Sudo
- (10561) Shimizumasahiro
- (11087) Yamasakimakoto
- (12362) Mumuryk
- (13582) Tominari