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9. A comet has a period of 76.3 years and moves in elliptical orbit in which its perihelion (closest approach to the Sun) is 0.610 AU (Astronomical Units). Find (a) the semi-major axis of the comet and (b) an estimate of the comets maximum distance from the Sun, both in astronomical units
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By Applying keple rs thri law 2. a= 76,3 manel ista? ce 29 ー 2X18 36 Au.

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