The strategy of Nakshatra is exclusive to Vedic astrology. There are actually 27 nakshatras of star constellations in Vedic astrology. The birth star relies on the longitude of the Moon at time of birth. To check doshas - Vedic astrology retains that anyone's Future is predetermined by the stars' positions https://rudrakshshrimali.com/kundali-matching-kundli-milan-horoscope-matching/