(8704) Sadakane Main-belt Asteroid
Discovered on 17 December 1993 by T. Kobayashi at Oizumi.
Kozo Sadakane (b. 1947), Osaka Kyoiku University, is an expert on the analysis of stellar spectra, especially those of chemically peculiar and metal deficient old stars. Superficially normal A type stars with underabundances such as 21 Peg and HR 7338 are often referred to as Sadakane stars.Naming citation (20020921/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sadakane is today
Seen from above the solar system on 2026-10-14: Sadakane is 2.45 au from the Sun and 3.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8704 |
| Provisional designation | 1993 YJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.93 km (#17,103 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.259 |
| Absolute magnitude (H) | 15.5 |
| Orbital period | 3.22 years |
| Semi-major axis | 2.18 au |
| Perihelion – aphelion | 1.79 – 2.57 au |
| Eccentricity | 0.181 |
| Inclination | 3.49° |
| Closest distance between its orbit and Earth's (MOID) | 0.793 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.