Map of the Universe
Io
Moon · Innermost Galilean moon of Jupiter
About Io
On 2026-01-01, the date the map shows, Io was 5.21 AU from the Sun; sunlight takes 43.3 minutes to reach it.
It goes round its planet once every 1.77 days, 422,029 km away on average.
It is about 3,643 km across.
The map lists it as a moon and shows it in the Solar System part of the map, drawn on the plane of Earth’s orbit (the ecliptic).
Key numbers
| Orbit radius (semi-major axis) | 422,029 km |
|---|---|
| Orbital period | 1.77 days |
| Eccentricity | 0.0040 |
| Inclination | 2.21° |
| Radius | 1,821.6 km |
| Distance from the Sun | 5.21 AU |
Where it is
Its place in the universe, from the inside out: Jupiter › Solar System › Orion–Cygnus Arm (Local Arm) › Milky Way › Local Group › Virgo Supercluster › Laniakea Supercluster › Observable universe.
Zoom out to see it in context: Jupiter's orbit, a view about 14 AU across.
From Wikipedia
Io is the innermost and second smallest of the four Galilean moons of Jupiter.
Excerpt from the Wikipedia article Io (moon), licensed CC BY-SA 4.0.