[[Fasciculus:Orbits of periodic comets.svg|thumb|[[Orbita]]e trium [[cometa]]rum periodicorum, Halleyanus, [[Cometa Borrelly|Borrelly]], et [[Cometa Ikeya-Zhang|Ikeya-Zhang]], iuxta orbitas [[planeta]]rum exteriorum; Halleyanus sinistra parte videtur.]]
[[Fasciculus:Tapestry of bayeux10.jpg|thumb|Cometa HalleiensisHalleyanus die [[14 Aprilis]] [[1066]] visus, in [[Tapete Baiocense|Tapete Baiocensi]] pictus.]]
'''Cometa Halleyanus''',<ref>"Halleyanus cometa": vide e.g. [http://books.google.fr/books?id={{Google Books|vPxkmDQKgXYC&pg=PA348&lpg=PA348&dq="halleyanus"&source=bl&ots=hkWRzCOF56&sig=hjHbP5jxrOKTWkCUVA-Zv97D9rQ&hl=en&sa=X&ei=nCYJUrCYKOm00QXxioHQCw&ved=0CCwQ6AEwAA#v=onepage&q=%22halleyanus%22&f=false|p. hic]348}}</ref> [[Designatio cometarum|designatione astronomica]] '''1P/Halley''', est notissimus [[cometes]] periodicus, qui post intervalla 75 sive 76 [[annus|annorum]] paret. Observabatur ab astronomis utique ab anno [[240 a.C.n.]], atque ex [[Edmundus Halley|Edmundo Halley]], astronomo [[Anglia|Anglico]], qui primum [[orbita]]m et periodum cometae computavit, appellatur.
