(2639) Planman Main-belt Asteroid
Discovered on 9 April 1940 by Y. Vaisala at Turku.
Where Planman is today
Seen from above the solar system on 2026-10-14: Planman is 2.91 au from the Sun and 2.43 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2639 |
| Provisional designation | 1940 GN |
| Orbit class | Main-belt Asteroid |
| Rotation period | 89.5 hours |
| Absolute magnitude (H) | 13.22 |
| Orbital period | 3.82 years |
| Semi-major axis | 2.44 au |
| Perihelion – aphelion | 1.97 – 2.92 au |
| Eccentricity | 0.194 |
| Inclination | 9.67° |
| Closest distance between its orbit and Earth's (MOID) | 0.956 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.