The largest comets

The largest comet in this catalogue is 167P/CINEOS, with a radius of 33.09 km. Next are 29P/Schwassmann-Wachmann 1 and C/1995 O1 (Hale-Bopp).

Radius here means the solid nucleus — the few kilometres of ice and dust that stay behind after the tail, which can be longer than the distance from Earth to the Sun, has boiled away.