(Earlier, Robert Hooke had identified the comet of 1664 with that of 1618, while Giovanni Domenico Cassini had suspected the identity of the comets of 1577, 1665, and 1680.
(Tidigare hade Robert Hooke identifierat kometen år 1664 med den från 1618 och Jean-Dominique Cassini kopplat samman kometerna åren 1577, 1665, och 1680.