What is Earth's diameter size in Astronomical Units? What is the best unit for Earth? Also, what is Earth's size in light-year?

1 Answer
A. S. Adikesavan
Feb 5, 2016

Earth's diameter = 12756 km = 8.5269 E-04 AU = 1.35 E-09 LY. Best unit for size of space bodies is km or mile. .

Explanation:

IAU (International Astronomical Union) AU = 149597870.7 km. 1 light year (LY) = 6.29 E+04 AU. For the precision in measurements of angles, all the significant digits (sd) in size might be exact. For larger units like LY, this might not be so.

Related questions
See all questions in The Planets
Impact of this question
8117 views around the world
You can reuse this answer
Creative Commons License