Astronomical Unit
The Astronomical Unit is a unit of length. It is equal to 149,597,870.7 km, or roughly the mean distance from Earth to the Sun.
| Distance from the Sun | |
| Mercury | 0.39 ± 0.09 |
| Venus | 0.72 ± 0.01 |
| Earth | 1.00 ± 0.02 |
| Mars | 1.52 ± 0.14 |
| Jupiter | 5.20 ± 0.25 |
| Saturn | 9.58 ± 0.53 |
| Uranus | 19.23 ± 0.85 |
| Neptune | 30.10 ± 0.34 |
| Pluto | 39.3 ± 9.6 |
| Kuiper Belt | Between approx 30 - 55 |
| Heliosheath | 100 |
| Oort Cloud | Between approx 1000 and 100,000 |