(9783) Tensho-kan Main-belt Asteroid
Discovered on 28 December 1994 by T. Kobayashi at Oizumi.
Tensho-kan was the first planetarium in Japan, located at the science center in Osaka. Over 10 million people visited the planetarium before it was closed in 1989.Naming citation (20020921/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Tensho-kan is today
Seen from above the solar system on 2026-10-14: Tensho-kan is 2.92 au from the Sun and 3.92 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9783 |
| Provisional designation | 1994 YD1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.33 km (#9,994 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.188 |
| Rotation period | 3.01 hours |
| Absolute magnitude (H) | 14.08 |
| Orbital period | 4.36 years |
| Semi-major axis | 2.67 au |
| Perihelion – aphelion | 2.39 – 2.95 au |
| Eccentricity | 0.106 |
| Inclination | 1.97° |
| Closest distance between its orbit and Earth's (MOID) | 1.40 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 28 December 1994
More named asteroids discovered by T. Kobayashi
- (4807) Noboru
- (5924) Teruo
- (6275) Kiryu
- (6276) Kurohone
- (6346) Syukumeguri
- (6414) Mizunuma
- (6418) Hanamigahara
- (6420) Riheijyaya
- (6422) Akagi
- (6423) Harunasan
- (6462) Myougi
- (6531) Subashiri
← (9782) Edo · (9784) Yotsubashi →