jìdù
Ketu，又曰計部，雞兜，雞都。九曜之一。譯曰旗星。即彗星也。大日經疏四曰：「計都正翻為旗，旗星謂彗星也。」
計部; 雞都 or 兜 ketu, any bright appearance, comet, ensign, eminent, discernment, etc.; the name of two constellations to the left and right of Aquila.
Ketu
梵語也唐云幢或云節手執也
亦梵語或云鷄兜或云計覩此云蝕伸亦暗曜也案羅睺計都常隱不現遇日月行次即蝕亦名建墜二曜也蝕音食