Galilean Moon

Io

Io is currently about 866,217,675 kilometres from Earth, or 5.790 astronomical units, which puts a one-way radio signal 48.2 minutes out. It is 5.310 astronomical units from the Sun.

Global image of Io true color
NASA/JPL/University of Arizona, Public domain (NASA). Source.

The most volcanically active body in the solar system, its surface constantly reshaped by hundreds of erupting volcanoes.

Juno flybys in 2023 and 2024 returned the best Io imagery since Galileo.

Right now

Distance from Earth
866,217,675 km (5.790 AU)
Distance from the Sun
794,386,157 km (5.310 AU)
One-way signal time
48.2 minutes

The body

Mean radius
1,822 km
Orbital radius
421,700 km
Orbital period
1.77 days
Io on the live map, in its real position. Drag to look around, or open the full map.

Nearby on the map

Everything on the map