Domain
Detachment, moksha, intuition. Ketu — the south lunar node — is the karaka of moksha, detachment and the karmic past. Strong Ketu grants intuition; afflicted Ketu manifests as confusion.
Sacred day
Tuesday (alongside Mangal). Activate the yantra at sunrise on this day for the strongest field.
Bija mantra
Om Sram Srim Sraum Sah Ketave Namaha
Chant 108 times daily during the activation period (40 days minimum), and 27 times daily thereafter.
Recommended yantra
Siddha Ketu Yantra Card — the traditional Bhagya Cards pairing for Ketu (south node).
When to invoke
If your kundali shows Ketu (south node) as a weak or afflicted graha, or if you are currently in its mahadasha or antardasha, the yantra is the standard upaaya. Combine with the bija mantra, a charity in the planet's name, and (for some grahas) fasting on the appropriate day.
Cross-references
See also: Yantras by zodiac sign · Navagraha — full glossary entry · All yantras.