Question

Planet Nine is speculated to be on average 20 times farther away from the Sun than Neptune (on average distance from the Sun). How many miles from the Sun would this place Planet Nine on average? Divide 93 million miles into your result to get how many astronomical units (AU) Planet Nine would be on average away from the Sun.

Answer 1

Answer:

The distance is 55.636 billion miles, or 528.2 AU.

Explanation:

Since the distance from the Sun to Neptune is 2.7818 billion miles, the distance from the Sun to Planet Nine would be 20 times that, which is:

$d=(20)(2781800000\ miles)=55636000000\ miles$

or 55.636 billion miles.

Since 1 astronomical unit (AU) is 93 million miles, that distance is also:

$d=(55636000000\ miles)(\frac{1AU}{93000000\ miles})=598.2\ AU$