Convert Astronomical Units to Megaparsecs
Convert Astronomical Units (AU) to Megaparsecs (Mpc) instantly and accurately.
Conversion Formula
Mpc = AU × 4.848136811e-12
About Astronomical Units
An astronomical unit (AU) is the average distance between Earth and the Sun, precisely defined as 149,597,870.7 kilometers. This unit provides a convenient scale for measuring distances within our solar system. Mars orbits at 1.5 AU, Jupiter at 5.2 AU, and Neptune at about 30 AU from the Sun. The dwarf planet Pluto reaches up to 49 AU away. Light takes about 8.3 minutes to travel 1 AU, explaining why we see the Sun as it was 8 minutes ago. The AU is fundamental in astronomy and space exploration.
About Megaparsecs
A megaparsec (Mpc) is one million parsecs or 3.26 million light years, the standard unit for measuring intergalactic distances. The Andromeda Galaxy is about 0.77 megaparsecs away, while most galaxies in the observable universe are measured in megaparsecs. The Local Group of galaxies spans about 3 megaparsecs. Astronomers use megaparsecs in combination with redshift measurements to calculate distances to distant galaxies and study the expansion of the universe. The Hubble constant, describing cosmic expansion, is expressed in kilometers per second per megaparsec.
Quick Reference Table
| Astronomical Units (AU) | Megaparsecs (Mpc) |
|---|---|
| 1 AU | 4.848 × 10-12 Mpc |
| 2 AU | 9.696 × 10-12 Mpc |
| 5 AU | 2.424 × 10-11 Mpc |
| 10 AU | 4.848 × 10-11 Mpc |
| 25 AU | 1.212 × 10-10 Mpc |
| 50 AU | 2.424 × 10-10 Mpc |
| 100 AU | 4.848 × 10-10 Mpc |