(9870) Maehata Main-belt Asteroid
Discovered on 24 February 1992 by T. Seki at Geisei.
Hideko Maehata (née Hideco Hyodo, 1914-1995), born in Hashimoto city, Wakayama Prefecture, won the gold medal for the 200-m breast-stroke event in the 1936 Olympuic Games in Berlin. She was the first Japanese female Olympic gold medalist.Naming citation (20050125/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Maehata is today
Seen from above the solar system on 2026-10-14: Maehata is 2.70 au from the Sun and 1.74 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9870 |
| Provisional designation | 1992 DA |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.13 km (#12,422 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.358 |
| Absolute magnitude (H) | 14.03 |
| Orbital period | 3.58 years |
| Semi-major axis | 2.34 au |
| Perihelion – aphelion | 1.95 – 2.73 au |
| Eccentricity | 0.167 |
| Inclination | 3.70° |
| 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 discovered on 24 February 1992
More named asteroids discovered by T. Seki
- (2396) Kochi
- (2571) Geisei
- (2582) Harimaya-Bashi
- (2621) Goto
- (2835) Ryoma
- (2880) Nihondaira
- (2961) Katsurahama
- (3150) Tosa
- (3182) Shimanto
- (3262) Miune
- (3431) Nakano
- (3785) Kitami
← (9869) Yadoumaru · (9871) Jeon →