Ketu in Vedic Astrology
Ketu is the mystic planet like Rahu. It is not a physical planet but an imaginary point like Rahu. It is also called as Dragon’s tail or south node. He is called as ‘Vighnakaraka’ which means that the planet signify obstacles. Ketu always moves 180° apart from Rahu (opposite to Rahu). Rahu and Ketu are termed as malefic planets. The difference between them being, Rahu shadows the planet and thereby makes the planet or house weak, while Ketu acts as a planet of blockade and blocks the results of the planet and the bhava. Rahu and Ketu periodically eclipses Sun and Moon.
Read: Rahu in Vedic Astrology
Also read: Eclipses and Mythological aspect of Ketu.
Ketu is called as ‘Mokshakaraka’ in Astrology. He influences spirituality and self realization. A favourable Ketu in a chart can give knowledge of self, intuitive power, inquisitiveness to know the unknown. It helps one to learn occult science like mantra, tantra, astrology etc. He represents philosophy, psychic abilities and helps to come out of illusion thereby liberation. Ketu gives lot of obstacles in material world but promotes spirituality.
It is said in dictum as ‘Kuja vath Ketu’ which means Ketu behaves as Kuja or Mars. It represents and gives the result like Mars. Here Ketu signify sudden events, transformation etc. in a spiritual path. Ketu like Mars is a fiery planet which helps to burn the material desires.
Rahu and Ketu shows some karmic backlog in the chart. Rahu shows some unfulfilled desires of the past life while Ketu shows over indulgence in the past life. If Ketu is badly posited in the chart, that shows the native in the past life might have excessively enjoyed with greed at the cost of others. The position of Ketu will determine the specific area of life where the native had over indulgence. In this life, Ketu makes that person to be discontent in those areas or gives lot of obstacles. It can either give lot of problems in achieving the particular goal or make him completely detached from that.
Other Astrological Significations
Ketu represents multicolor, he faces south, his weapons are mace and varad. His mandala is like a flag post. Shakti devata for Ketu is Dhoomra, Adhi devata is Brahma, Prathyadhi devata is Chitragupta, Abhimana devata is Ganapathi. Number of japas to be performed is 17000, number of homas is 1700 and number of tarpans is 170. The sacred wood is Kusha or Darbha. The oblation is the rice made of jeera or chitranna. The idol is made out of bronze. The flower offered is oleander or red kanagale. Good day for commencing the poojas for Ketu is Tuesday in the star of Swati. The mantra to be recited is ‘Om Kethave Namah’.
Astrologically, Ketu does not own any house since it is a shadow planet. However it is believed that he owns Meena rasi (Pisces) and exalted in Sagittarius (Dhanu) and debilitated in Gemini (Mithuna). It is also said that Ketu is very auspicious in Scorpio and negative in Taurus. Dasa period of Ketu is 7 years.