(18453) Nishiyamayukio Main-belt Asteroid
Discovered on 2 October 1994 by Endate, K., Watanabe, K. at Kitami.
Yukio Nishiyama (b. 1950) is the president of a ship-building design company who spends his evenings as an amateur astronomer. The private observatory he built in 1989 houses a 0.31-m telescope and a 0.25-m astrocamera.Naming citation (MPC batch dated 2014-07-12), IAU / Minor Planet Center, via NASA/JPL
Where Nishiyamayukio is today
Seen from above the solar system on 2026-10-14: Nishiyamayukio is 2.26 au from the Sun and 2.01 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18453 |
| Provisional designation | 1994 TT |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.71 km (#13,433 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.244 |
| Absolute magnitude (H) | 14.77 |
| Orbital period | 4.06 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 1.94 – 3.15 au |
| Eccentricity | 0.236 |
| Inclination | 5.93° |
| Closest distance between its orbit and Earth's (MOID) | 0.951 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Yukio
All asteroids named after someone called Yukio
Also discovered on 2 October 1994
- (6878) Isamu
- (6927) Tonegawa
- (7664) Namahage
- (7890) Yasuofukui
- (8712) Suzuko
- (9080) Takayanagi
- (9208) Takanotoshi
- (12383) Eboshi
- (13608) Andosatoru
- (14027) Ichimoto
- (14487) Sakaisakae
- (14922) Ohyama