(12204) Jonpineau Main-belt Asteroid
Discovered on 2 March 1981 by S. J. Bus at Siding Spring.
Jon Paul Pineau (b. 1978) supported NASA's Lucy Trojan asteroid mission as Aerospace Engineer and Lead Science Operations Center (SOC) Systems Engineer. He contributed to the design, development, and test of the SOC systems, the SOC interfaces, and mission concept of operations.Naming citation (WGSBN Bull. 1, #9, 10), IAU / Minor Planet Center, via NASA/JPL
Where Jonpineau is today
Seen from above the solar system on 2026-10-14: Jonpineau is 2.23 au from the Sun and 2.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12204 |
| Provisional designation | 1981 EK26 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.59 km (#16,078 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.263 |
| Absolute magnitude (H) | 15.25 |
| Orbital period | 4.06 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.23 – 2.86 au |
| Eccentricity | 0.123 |
| Inclination | 2.88° |
| Closest distance between its orbit and Earth's (MOID) | 1.22 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called Jon
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