Natural Satellite
Iapetus
Iapetus is currently about 1,295,412,046 kilometres from Earth, or 8.659 astronomical units, which puts a one-way radio signal 72.0 minutes out. It is 9.458 astronomical units from the Sun.
The two-faced moon, one hemisphere dark as coal and the other bright as snow, encircled by a strange equatorial ridge.
The origin of its equatorial ridge is still debated.
Right now
- Distance from Earth
- 1,295,412,046 km (8.659 AU)
- Distance from the Sun
- 1,414,925,780 km (9.458 AU)
- One-way signal time
- 72.0 minutes
The body
- Mean radius
- 735 km
- Orbital radius
- 3,560,820 km
- Orbital period
- 79 days