Question: calculate orbital parameters using Kepler's Third Law (P' 2 = a 3 ). 1) Scientists just discovered a new comet that orbits the Sun once

 calculate orbital parameters using Kepler's Third Law (P'2 = a3).
 1) Scientists just discovered a new comet that orbits the Sun once every 540 years.
 a) What is the semi-major axis of this comet in astronomical units? 
b) If this comet gets as close to the Sun as 6 AU at perihelion, how far away from the Sun is it at aphelion? 
2) Scientists just discovered a new asteroid in their search for near Earth objects. It orbits the Sun at a semi-major axis of 88 million kilometers. 
a) What is this distance in astronomical units?
 b) What is the orbital period of this asteroid in days?

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