(219861) Robertdecker Main-belt Asteroid
Discovered on 6 February 2002 by M. W. Buie at Kitt Peak.
Robert B. Decker (b. 1951) is an American physicist at the Johns Hopkins University Applied Physics Laboratory. He has made fundamental contributions to the study of the heliosphere, most notably as a co-investigator for the Voyager 1 & 2 Low Energy Charged Particle experiment exploring the solar wind termination shock.Naming citation (WGSBN Bull. 4, #4, 12), IAU / Minor Planet Center, via NASA/JPL
Where Robertdecker is today
Seen from above the solar system on 2026-10-14: Robertdecker is 3.04 au from the Sun and 4.03 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 219861 |
| Provisional designation | 2002 CP250 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.48 |
| Orbital period | 4.81 years |
| Semi-major axis | 2.85 au |
| Perihelion – aphelion | 2.63 – 3.07 au |
| Eccentricity | 0.0766 |
| Inclination | 3.07° |
| Closest distance between its orbit and Earth's (MOID) | 1.64 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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