(26855) Yasukohasegawa Main-belt Asteroid
Discovered on 17 November 1992 by Endate, K., Watanabe, K. at Kitami.
Yasuko Hasegawa (b. 1932) was the founder and president of the first computer training institution in Japan. She also provided significant support for computer education activities in over twenty developing countries. In the 1960s she was engaged in astronomical research, specifically computations of stellar-atmosphere models.Naming citation (WGSBN Bull. 4, #1, 5), IAU / Minor Planet Center, via NASA/JPL
Where Yasukohasegawa is today
Seen from above the solar system on 2026-10-14: Yasukohasegawa is 2.90 au from the Sun and 2.23 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 26855 |
| Provisional designation | 1992 WN1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.24 km (#5,585 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0750 |
| Absolute magnitude (H) | 13.93 |
| Orbital period | 4.98 years |
| Semi-major axis | 2.92 au |
| Perihelion – aphelion | 2.45 – 3.39 au |
| Eccentricity | 0.161 |
| Inclination | 5.53° |
| Closest distance between its orbit and Earth's (MOID) | 1.47 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.