A Astronomical Unit (au) is the mean distance from the center of the Earth to the center of the sun. This distance is 149,597,870 km which is one astronomical unit.
One Astronomical Unit is equal to:
Astronomical Units are often used in astronomy calculations featured in vCalc's Astronomy Calculator.
Question: How far does the Earth travel around the Sun?
Answer: The Earth tracks 939,951,143 km in each orbit around the Sun
Here’s How: The Earth is in nearly a circular orbit around the Sun. So we can use the formula for the circumference of a circle to estimate the distance the Earth travels around the Sun based on the radius of the circle, which is the distance from the center of the Sun to the center of the Earth. That distance is 149,597,870 km which is one astronomical unit.
So, using basic geometry: