(31151) Sajichugaku Main-belt Asteroid
Discovered on 29 October 1997 by Saji at Saji.
Saji chugaku is a junior high school in Saji with an astronomical observatory. It was established in 1947 and will close in 2013.Naming citation (MPC batch dated 2013-04-25), IAU / Minor Planet Center, via NASA/JPL
Where Sajichugaku is today
Seen from above the solar system on 2026-10-14: Sajichugaku is 2.33 au from the Sun and 2.26 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31151 |
| Provisional designation | 1997 UM21 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.35 km (#16,528 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.267 |
| Absolute magnitude (H) | 15.35 |
| Orbital period | 3.31 years |
| Semi-major axis | 2.22 au |
| Perihelion – aphelion | 2.06 – 2.38 au |
| Eccentricity | 0.0731 |
| Inclination | 5.26° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 29 October 1997
- (10222) Klotz
- (10399) Nishiharima
- (27978) Lubosluka
- (31152) Daishinsai
- (33056) Ogunimachi
- (35370) Daisakyu
- (39802) Ivanhlinka
- (44011) Juubichi
- (85512) Rieugnie
- (152647) Rinako