(20117) Tannoakira Main-belt Asteroid
Discovered on 15 November 1995 by Endate, K., Watanabe, K. at Kitami.
Akira Tanno (b. 1940) is a historian studying folk customs and scientists in the Edo period of Japan.Naming citation (MPC batch dated 2017-01-12), IAU / Minor Planet Center, via NASA/JPL
Where Tannoakira is today
Seen from above the solar system on 2026-10-14: Tannoakira is 3.00 au from the Sun and 3.98 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20117 |
| Provisional designation | 1995 VN1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.11 km (#8,773 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.330 |
| Absolute magnitude (H) | 13.45 |
| Orbital period | 4.18 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.16 – 3.03 au |
| Eccentricity | 0.169 |
| Inclination | 14.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.18 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Akira
- (5782) Akirafujiwara
- (6298) Sawaoka
- (6658) Akiraabe
- (7238) Kobori
- (7410) Kawazoe
- (8232) Akiramizuno
- (8529) Sinzi
- (9408) Haseakira
- (9865) Akiraohta
- (10196) Akiraarai
- (16671) Tago
- (22394) Kondouakira
All asteroids named after someone called Akira
Also discovered on 15 November 1995
- (7674) Kasuga
- (8904) Yoshihara
- (11987) Yonematsu
- (13627) Yukitamayo
- (14499) Satotoshio
- (18473) Kikuchijun
- (24844) Hwanginjoon
- (37693) Utofumiaki
- (43899) Kobayashihiroki