Know About Magha and Purvashadha Nakshatra Compatibility in Love, Marriage, Career, Friendship, and Sex. Find out Magha and Purvashadha Nakshatra compatibility and other personality traits. Sagittarius contains Purvashadha at its center. It is generally called Jal nakshatra and is the 20th of the 27 nakshatras in the series. Purvashada is made from the three stars Kaus Media, Kaus Borealis, and Kaus Australis.