(164130) Jonckheere Main-belt Asteroid
Discovered on 18 December 2003 by Pauwels, T., De Cat, P. at Uccle.
Robert Louis Charles Jonckhèere (1888–1974) was a French amateur astronomer who observed visual double stars. He discovered more than 1300 systems with his private 0.35-m refractor at Hem and performed more than 15 000 measurements. Name suggested by P. Lampens and P. Van Cauteren.Naming citation (WGSBN Bull. 6, #9, 5), IAU / Minor Planet Center, via NASA/JPL
Where Jonckheere is today
Seen from above the solar system on 2026-10-14: Jonckheere is 2.82 au from the Sun and 2.93 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 164130 |
| Provisional designation | 2003 YY21 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.87 |
| Orbital period | 4.91 years |
| Semi-major axis | 2.89 au |
| Perihelion – aphelion | 2.60 – 3.17 au |
| Eccentricity | 0.0986 |
| Inclination | 1.94° |
| Closest distance between its orbit and Earth's (MOID) | 1.60 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Robert
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