It is believed that there is a supermassive black hole at
Chapter , Problem 96(choose chapter or problem)
It is believed that there is a supermassive black hole at the center of our galaxy. One datum that leads to this conclusion is the important recent observation of stellar motion in the vicinity of the galactic center. If one such star moves in an elliptical orbit with a period of 15.2 years and has a semimajor axis of 5.5 light-days (the distance light travels in 5.5 days), what is the mass around which the star moves in its Keplerian orbit?
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