(21275) Tosiyasu Main-belt Asteroid
Discovered on 23 September 1996 by T. Okuni at Nanyo.
Tosiyasu Funakosi (b. 1953), a farmer, is a Japanese amateur astronomer who has been observing occultations since 1981.Naming citation (20020328/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Tosiyasu is today
Seen from above the solar system on 2026-10-14: Tosiyasu is 2.56 au from the Sun and 3.17 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21275 |
| Provisional designation | 1996 SJ7 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.79 km (#17,223 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.200 |
| Rotation period | 6.97 hours |
| Absolute magnitude (H) | 16.02 |
| Orbital period | 3.21 years |
| Semi-major axis | 2.18 au |
| Perihelion – aphelion | 1.78 – 2.58 au |
| Eccentricity | 0.184 |
| Inclination | 1.15° |
| Closest distance between its orbit and Earth's (MOID) | 0.764 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 23 September 1996
More named asteroids discovered by T. Okuni
- (7039) Yamagata
- (8220) Nanyou
- (8418) Mogamigawa
- (8723) Azumayama
- (8730) Iidesan
- (8747) Asahi
- (8922) Kumanodake
- (8937) Gassan
- (9110) Choukai
- (9128) Takatumuzi
- (9990) Niiyaeki
- (10405) Yoshiaki
← (21272) Suyi · (21276) Feller →