(3829) Gunma Main-belt Asteroid
Discovered on 10 March 1988 by T. Kojima at Chiyoda.
Named for the prefecture in central Japan that is home to the discoverer. A public astronomical observatory under construction in Gunma will include a 1.5-m telescope, the largest in Japan for public use. This telescope will also be used for astronomical research and discovery.Naming citation (19961026/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Gunma is today
Seen from above the solar system on 2026-10-14: Gunma is 3.03 au from the Sun and 3.46 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3829 |
| Provisional designation | 1988 EM |
| Orbit class | Main-belt Asteroid |
| Diameter | 24.3 km (#1,745 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0393 |
| Rotation period | 4.73 hours |
| Spectral type | Ch |
| Absolute magnitude (H) | 12.19 |
| Orbital period | 4.66 years |
| Semi-major axis | 2.79 au |
| Perihelion – aphelion | 2.33 – 3.24 au |
| Eccentricity | 0.163 |
| Inclination | 7.54° |
| Closest distance between its orbit and Earth's (MOID) | 1.35 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.