1. The problem statement, all variables and given/known data A binary star system consists of a hot main sequence star (m=0.5m) and a red giant (m=1.2m), the parallax of the system is p=0.0012". Calculate the apparent magnitude of the system. 2. Relevant equations I have b1/b2 = 2.512^(m2-m1) and p=1/r 3. The attempt at a solution I've already calculated the distance from the system to the earth (~833.65pc) and I know that I can't simply add the apparent magnitudes.