(16790) Yuuzou Main-belt Asteroid
Discovered on 2 January 1997 by N. Sato at Chichibu.
Yuuzou Hasegawa (1956-2007) was a Japanese aerospace engineer who contributed to the success of the mission ‘KAGUYA’ as a leader of design, development and operations of Ground Test Facilities/Equipment, thereby realizing some unusual verifications and tests that assured 15 special KAGUYA flights.Naming citation (20101128/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Yuuzou is today
Seen from above the solar system on 2026-10-14: Yuuzou is 2.75 au from the Sun and 2.34 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 16790 |
| Provisional designation | 1997 AZ4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.68 km (#8,026 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.173 |
| Rotation period | 8.58 hours |
| Absolute magnitude (H) | 13.77 |
| Orbital period | 4.47 years |
| Semi-major axis | 2.71 au |
| Perihelion – aphelion | 2.53 – 2.90 au |
| Eccentricity | 0.0680 |
| Inclination | 3.00° |
| Closest distance between its orbit and Earth's (MOID) | 1.52 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 2 January 1997
- (7504) Kawakita
- (8582) Kazuhisa
- (8735) Yoshiosakai
- (9105) Matsumura
- (11140) Yakedake
- (12456) Genichiaraki
- (12464) Manhattan
- (12823) Pochintesta
- (35313) Hangtianyuan