(100691) Hasetoshitsuka Main-belt Asteroid
Discovered on 25 December 1997 by Saji at Saji.
Hase Toshitsuka (1903–1991) was a Japanese businessman who wished for the development of Saji, Tottori City (his hometown), invested in local companies and contributed to numerous charitable donations for youth development. He also received the Order of the Sacred Treasure.Naming citation (WGSBN Bull. 4, #3, 8), IAU / Minor Planet Center, via NASA/JPL
Where Hasetoshitsuka is today
Seen from above the solar system on 2026-10-14: Hasetoshitsuka is 2.01 au from the Sun and 1.12 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 100691 |
| Provisional designation | 1997 YF7 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.96 |
| Orbital period | 3.64 years |
| Semi-major axis | 2.36 au |
| Perihelion – aphelion | 1.85 – 2.88 au |
| Eccentricity | 0.217 |
| Inclination | 4.52° |
| Closest distance between its orbit and Earth's (MOID) | 0.869 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 25 December 1997
- (8430) Florey
- (11152) Oomine
- (16857) Goodall
- (19370) Yukyung
- (26998) Iriso
- (29514) Karatsu
- (58671) Diplodocus