(11821) Coleman Main-belt Asteroid
Discovered on 6 March 1981 by S. J. Bus at Siding Spring.
Paul Henry Ikaika Coleman (1955-2018) was the first Native Hawaiian to earn a doctorate in astrophysics for his study of distant galaxies. He was a passionate advocate for astronomy and was dedicated to increasing Native Hawaiian participation in the sciences. Me ou mau kūpuna e Paul e ho`okele aku ai i nā moana hōkū ākea.Naming citation (MPC batch dated 2018-09-25), IAU / Minor Planet Center, via NASA/JPL
👶 Coleman as a baby name🐶 Coleman as a dog name
Where Coleman is today
Seen from above the solar system on 2026-10-14: Coleman is 3.17 au from the Sun and 2.47 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11821 |
| Provisional designation | 1981 EG44 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.44 km (#7,154 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.183 |
| Absolute magnitude (H) | 13.64 |
| Orbital period | 5.38 years |
| Semi-major axis | 3.07 au |
| Perihelion – aphelion | 2.93 – 3.21 au |
| Eccentricity | 0.0455 |
| Inclination | 9.62° |
| Closest distance between its orbit and Earth's (MOID) | 1.97 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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