Halley
astro:comet:halleyMost famous periodic comet; orbital period ~75–76 yr; last perihelion 1986, next expected 2061; visible to naked eye; nucleus ~15×8 km; records back to 240 BCE
Most famous periodic comet; orbital period ~75–76 yr; last perihelion 1986, next expected 2061; visible to naked eye; nucleus ~15×8 km; records back to 240 BCE