Navamsa in Astrology - Navamsa Chart 7th house of Navamsa chart - The 7th house of D9 chart depicts your partner's behaviour and personality in common, your partner's temperament, and also, represents your ability to surrender and negotiate in relationships. It might also give information about the appearance of your spouse. 8th house of Navamsa chart - The 8th house of the D9 chart represents the longevity of a relationship.