Ketu or the South Node of the Moon (which is called the Dragon's Tail) represents spiritual inclinations, superstitions, and technical trades. Ketu is a mysterious influence and like Rahu, can be afflictive in its nature. Infra-red is the cosmic color transmitted.
Gem:CAT'S EYERules: - Day:THURSDAYMetal:SILVER
If Ketu is well placed in one's horoscope the influence will be toward wealth, protection from evil, spiritualism and intuition.Invocation to be chanted eighteen times at midnight on Thursday: Om Ketuve Namaha (Om Key-too-vey Nahm-ah-ha) “Om and salutations to Ketu, presiding spirit of the South Node of the Moonâ€