Q: Are JYESHTHA and NIRRTI the same Godesses?
Yes, but that be careful about “mixing apples and oranges.”
Niṛrti is an ancient name for Kālī, and Dūrga, all of which are names for the feminine destructress, Rudrānī – the femininity of Śiva / Rudra. Jyeṣṭhā is yet another way of addressing Rudrānī Nirṛti because one of her major avatars appeared out of the cosmic “milk ocean” prior to the appearance of Viṣṇu’s feminine counterpart, Lakṣmī. The word Jyeṣṭhā means “superior” and is often used to refer to the oldest child, or elder of two siblings. Since Nirṛti’s avatar appeared a little before Śrī Lakṣmī’s she is known as Jyeṣṭhā.
However, the reason I advise you to be careful of “mixing apples and oranges” is that, in Astrology, Jyeṣṭhā is the name of a nakṣatra, and Nirṛti is the name of a goddess. The nakṣatra Jyeṣṭhā is not the home of Nirṛti. It is the home of another “jyeṣṭhā”, Indra – the king of the gods. (Jyeṣṭha = “superior” in a group). Both Nakṣatras, Indra’s Jyeṣṭhā and Nirṛti’s Mūla are classified as “sharp” (tīkṣṇa), so they both have a similar flavor. But Mūla’s needs and intent are, although similar, notably different from Jyeṣṭhas. According to Nakṣatra Sūtra, Jyeṣṭhā needs to provoke attacks so it is afforded opportunities to profit from conditions surrounding the counterattack; and Mūla tries to make lies reveal themselves by contradicting and thus destroying one another. You can see from this how they have some similarities but some important differences.
Vic DiCara – VicDiCara.com