Natural Satellite
Iapetus
Iapetus is currently about 1,259,866,500 kilometres from Earth, or 8.422 astronomical units, which puts a one-way radio signal 70.0 minutes out. It is 9.412 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
- 1,259,866,500 km (8.422 AU)
- Distance from the Sun
- 1,407,978,598 km (9.412 AU)
- One-way signal time
- 70.0 minutes
The body
- Mean radius
- 735 km
- Orbital radius
- 3,560,820 km
- Orbital period
- 79 days