Alexandre Guy Pingré, who in his Cométographie (1783) calls the Great comet of 1264 a "great and celebrated comet", calculated the comet's parabolic orbit, which he found bore great resemblance to that of the comet of 1556.
Alexandre Guy Pingré, som i sin Cométographie (1783) kallar 1264 års komet en "stor och firad komet", beräknade kometens paraboliska bana och fann stora likheter med 1556 års komet.