Ashvini is the first nakshatra in Indian astronomy, having a spread from 0°-0'-0" to 13°-20'. It corresponds to the head of Aries, including the stars β and γ Arietis, and possibly also α Arietis in the oldest versions of the asterism. Ashvini literally means "twin horse-man"; it is depicted as a horse's head and represents twin physician gods, the Ashvins. The name aśvinī is used by Varāhamihira. The older name of the asterism, found in the Atharvaveda and in Pāṇini (4.3.36), was aśvayúja, "harnessing horses". This nakshatra belongs to Mesha Rasi.