(9785) Senjikan Main-belt Asteroid
Discovered on 31 December 1994 by T. Kobayashi at Oizumi.
Senjikan was an astronomy group in Osaka in the Edo period. The group studied geodesy, positional astronomy and constructed the official calendar adopted by the Edo government.Naming citation (20020921/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Senjikan is today
Seen from above the solar system on 2026-10-14: Senjikan is 2.77 au from the Sun and 2.69 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9785 |
| Provisional designation | 1994 YX1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.05 km (#10,518 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.302 |
| Rotation period | 26.7 hours |
| Absolute magnitude (H) | 13.69 |
| Orbital period | 4.56 years |
| Semi-major axis | 2.75 au |
| Perihelion – aphelion | 2.60 – 2.90 au |
| Eccentricity | 0.0544 |
| Inclination | 3.11° |
| Closest distance between its orbit and Earth's (MOID) | 1.60 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 31 December 1994
- (7602) Yidaeam
- (8207) Suminao
- (9784) Yotsubashi
- (10160) Totoro
- (10161) Nakanoshima
- (10367) Sayo
- (55815) Melindakim