Answer: Using P2 = a3, with P = 30 yr, a = (30)2/3 = ((30)2)1/3= (900)1/3 ~ 10AU. Another example: An object is observed orbiting the Sun in an orbit of semimajor axis = 4 AU. How do I use paint app on my computer? how to use microsoft paint windows 10.

What does the A mean in P2 a3?

If the size of the orbit (a) is expressed in astronomical units (1 AU equals the average distance between the Earth and Sun) and the period (P) is measured in years, then Kepler’s Third Law says P2 = a3.

What is a3 P2?

Kepler’s third law says that a3/P2 is the same for all objects orbiting the Sun. Vesta is a minor planet (asteroid) that takes 3.63 years to orbit the Sun. … Phobos orbits Mars with an average distance of about 9380 km (about 5720 miles) from the center of the planet and a rotational period of about 7 hr 39 min.