Vedic astrology

Ketu

Also known as: Ketu and RahuRahu e KetuSouth NodeDragon's Tailshadow planet Ketuchhaya graha

In Vedic astrology (Jyotish), Ketu is the shadow planet corresponding to the Moon's South Node, always exactly opposite Rahu, associated with detachment, spirituality, intuition and what has already been learned and lived through.

Ketu, like Rahu, is not a physical body but a geometric point. It is the node where the Moon crosses the ecliptic from north to south. It always lies exactly 180 degrees from Rahu, so Rahu and Ketu form one axis and are never read entirely apart. In Vedic astrology both belong to the nine grahas as chhaya grahas, or shadow planets.

The nodal axis moves backwards through the zodiac. The mean node completes a circuit in about 18.6 years, so Ketu spends roughly a year and a half in each sign, always in the sign opposite Rahu. In its Vedic view AstroSensus calculates Rahu as the mean node, following Jyotish tradition, and places Ketu exactly opposite.

In the myth of the churning of the ocean of milk, the demon Svarbhanu drank the nectar of immortality and Vishnu cut off his head. The head became Rahu and the headless body became Ketu. The image captures Ketu's meaning well: action without a guiding desire, knowledge without the need to display it, intuition rather than calculation.

In interpretation Ketu is linked with detachment, withdrawal, spirituality and what tradition describes as already mastered, often framed as the legacy of past lives. The house Ketu occupies shows an area where things come naturally yet do not fully satisfy, or where indifference and a sense of insufficiency come easily. Ketu is also associated with sudden changes, severance, asceticism and the search for liberation, or moksha.

Among the nakshatras, Ketu rules Ashwini, Magha and Mula, the first nakshatra of each of the three groups of nine. In the Vimshottari dasha system the Ketu period lasts 7 years and is often described as a time of sorting things out, parting with what is no longer needed and turning inward. A planet conjunct Ketu tends to take on a more introverted, spiritual or unpredictable tone.

Ketu is not simply a malefic. Tradition counts it among the difficult planets because it brings detachment and can feel unsettling, yet the same detachment can bring calm, deep intuition and freedom from the pressure of expectations. The Western counterpart is the South Node, read mainly as the realm of habits and the familiar. The two traditions are best read separately.

The Rahu and Ketu axis shows the tension between what attracts and what can be let go. Ketu does not ask anyone to abandon their gifts; it invites the question of which ones still serve and which ones keep you standing still.