(6644) Jugaku Main-belt Asteroid
Discovered on 5 January 1991 by Takahashi, A., Watanabe, K. at Kitami.
Where Jugaku is today
Seen from above the solar system on 2026-10-14: Jugaku is 3.66 au from the Sun and 4.52 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 6644 |
| Provisional designation | 1991 AA |
| Orbit class | Main-belt Asteroid |
| Diameter | 14.5 km (#3,261 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.160 |
| Absolute magnitude (H) | 12.94 |
| Orbital period | 5.71 years |
| Semi-major axis | 3.20 au |
| Perihelion – aphelion | 2.71 – 3.69 au |
| Eccentricity | 0.153 |
| Inclination | 5.41° |
| Closest distance between its orbit and Earth's (MOID) | 1.70 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.