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Unformatted text preview: the Sun is 300,000 times as massive as the Earth and that the Sun is 400 times as distant as the Moon. 5. The true relative orbit of Ursae Majoris has a semi-major axis of 2.5 arcsec. If it is 0.41 light years distance and its period is 60 years what is the sum of the masses of the two stars in units of solar mass? 6. In an eclipsing binary in which the eclipses are exactly central, and in which a small star revolves about a considerable larger one, the interval from first to second contacts is one hour and from first to third contacts is four hours. The entire period is three days. The centers of the stars are separated by 11,460,000 km. What are the diameters of the stars? 7. A satellite is in a circular orbit around the Earth. If I desire to boost the satellite into an escape orbit by what factor must I increase its velocity? Express the increase in terms of v c , the circular satellite velocity....
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- Fall '08