Astronomers have observed a small, massive object at the center of our milky way galaxy. a ring of material orbits this massive object; the ring has a diameter of about 16 light-years and an orbital speed of about 130 km/s. for general problem-solving tips and strategies for this topic, you may want to view a video tutor solution of black hole calculations.
determine the mass m of the massive object at the center of the milky way galaxy. take the distance of one light year to be 9.461 x 1015m. express your answer in kilograms.