(22914) Tsunanmachi Main-belt Asteroid
Discovered on 13 October 1999 by LONEOS at Anderson Mesa.
Tsunanmachi, a town in Niigata prefecture, Japan, is famous for its Koshihikari rice. The town was heavily damaged during the 2011 earthquake.Naming citation (20120506/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Tsunanmachi is today
Seen from above the solar system on 2026-10-14: Tsunanmachi is 2.25 au from the Sun and 1.47 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 22914 |
| Provisional designation | 1999 TU36 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.41 km (#9,860 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.126 |
| Absolute magnitude (H) | 14.47 |
| Orbital period | 5.50 years |
| Semi-major axis | 3.12 au |
| Perihelion – aphelion | 2.17 – 4.06 au |
| Eccentricity | 0.304 |
| Inclination | 15.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.20 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 13 October 1999
- (22942) Alexacourtis
- (36187) Travisbarman
- (40764) Gerhardiser
- (60006) Holgermandel
- (121339) Otabekburkhonov
- (178534) Mosheelitzur