(100940) Maunder Main-belt Asteroid
Discovered on 28 June 1998 by E. W. Elst at La Silla.
Edward Walter Maunder (1851-1925), a British astronomer, was the driving force in the foundation of the British Astronomical Association. He is well-known for discovering a prolonged minimum in solar activity from 1645 to 1715, corresponding with lower than average European temperatures.Naming citation (MPC batch dated 2013-04-25), IAU / Minor Planet Center, via NASA/JPL
Where Maunder is today
Seen from above the solar system on 2026-10-14: Maunder is 2.64 au from the Sun and 3.38 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 100940 |
| Provisional designation | 1998 MM47 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.49 km (#11,645 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0870 |
| Absolute magnitude (H) | 15.33 |
| Orbital period | 4.23 years |
| Semi-major axis | 2.62 au |
| Perihelion – aphelion | 2.19 – 3.04 au |
| Eccentricity | 0.163 |
| Inclination | 15.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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