In Astrology, Ketu is also said to be a 'Node', 'Chayagrah or Shadowy planet like
Rahu, as it has no mass shape or substance and is not verified by visual observation.
In Hindu Mythology, Kethu represents dragon's tail. This Chayagrah is also malefic
and cruel in nature. Kethu has celestial points on the Zodiac, with regulated movement
and orbit and that it has a distinct and predictable influence on horoscope...More
Ketu in various houses according to Vedic Astrology
Ketu in various houses according to Lal Kitab
Remedies for Ketu