Forty-six binary systems with their primary component masses between 2 M☉ and M☉ have been considered for gravitational radiation study. Power output by gravitational radiation (Pв) and spiral τ0 for all individual systems have been evaluated. A relation has been given between Pв and τ0. The rate of decrease of orbital period (Ṗ) has also been given for 10 eccentric orbit systems.
