(20040) Tatsuyamatsuyama Main-belt Asteroid
Discovered on 21 November 1992 by T. Seki at Geisei.
Tatsuya Matsuyama (b. 1983) was born in Kochi city, Japan. He teaches at University of Kochi Primary School and works as an instructor at Geisei Observatory. He is dedicated to improving mathematical skills and increasing astronomical knowledge of primary school students.Naming citation (MPC batch dated 2020-08-07), IAU / Minor Planet Center, via NASA/JPL
Where Tatsuyamatsuyama is today
Seen from above the solar system on 2026-10-14: Tatsuyamatsuyama is 2.26 au from the Sun and 1.53 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20040 |
| Provisional designation | 1992 WT3 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.3 |
| Orbital period | 3.83 years |
| Semi-major axis | 2.45 au |
| Perihelion – aphelion | 1.90 – 2.99 au |
| Eccentricity | 0.224 |
| Inclination | 7.50° |
| Closest distance between its orbit and Earth's (MOID) | 0.915 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Tatsuya
All asteroids named after someone called Tatsuya