Suppose two stars are in an orbit with a period of 10 years, and each star has a mass of one solar mass. a) if the orbit is circular and has a maximum separation of 1" between the stars, how distant is the binary? b) explain qualitatively how you would determine that the orbit is circular if the trace of the orbit on the sky is 1" in the long direction and 0.1" in the short direction, and explain one other quantitative thing you know about the binary based on that ratio