Ketu in the 9th house (Dharma / Bhagya, the house of fortune) brings the significations of Ketu, namely spirituality & moksha, detachment, past-life karma, into the area of fortune, dharma, the father and higher wisdom. The 9th house governs fortune & luck, father, dharma & ethics, higher learning & guru.
Results of Ketu in the 9th House
Ketu is a malefic planet, so here it tends to bring confusion, sudden losses, feeling lost, and unexplained anxieties focused on fortune, dharma, the father and higher wisdom. As a trine (trikona) house of fortune, benefic influence here is especially auspicious.The exact result depends on which sign Ketu occupies here and the aspects it receives.
When It Activates
These results typically surface during the Vimshottari mahadasha or antardasha of Ketu, and when transiting planets trigger the 9th house. A well-placed Ketu here supports good luck, wisdom, a supportive father and a strong sense of purpose; when afflicted it can indicate poor luck, a weak moral compass and distance from the father.