117P/Helin–Roman–Alu
Comet
117P/Helin–Roman–Alu, also known as Helin-Roman-Alu 1, is a periodic comet in the Solar System. It is a Quasi-Hilda comet. Wikipedia
Discovered: October 2, 1989
Orbits: Sun
Discoverers: Eleanor F. Helin, Jeff T. Alu, and Brian P. Roman