Popocacitlalin
Cē popōcacītlalli (nōzō cuitlāpīlcītlalli, cāxtiltlahtōlcopa: cometa) ītōca cē tēpōl ma mōahuiquiyāni ilhuicānco ihuān ihcuac mōazi tōnatināhuac in cetl īnacayōtlānco cē cuitlāpīlli mōmōcuepa.

Nohiucan tlachiya 
 CHAPTER II: Mexican Mythology: Nahua Religion
 Other Ancient Astronomy Citat: "...Celestial objects that were observed were Tōnatiuh (Sun), Mētztli (Moon), solar and lunar eclipses, Tiyānquiztli (Pleiades), Citlālpōl (Venus), Citlālin popōca (comet), Citāltamina (meteors), Xonecuilli (Little Dipper), and several objects which are not currently confirmed. Those falling into this last category include Mamalhuāztli, the Fire Drill (Orion?), Cītlaltlachtli (Gemini?), and Cītlalcolōtl (Scorpio)..."

Ilhuicamatiliztli