Map of the Universe
Callisto
Moon · Second-largest moon of Jupiter
About Callisto
On 2026-01-01, the date the map shows, Callisto was 5.22 AU from the Sun; sunlight takes 43.4 minutes to reach it.
It goes round its planet once every 16.69 days, 1,882,640 km away on average.
It is about 4,821 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) | 1,882,640 km |
|---|---|
| Orbital period | 16.69 days |
| Eccentricity | 0.0073 |
| Inclination | 1.95° |
| Radius | 2,410.3 km |
| Distance from the Sun | 5.22 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
Callisto is the second-largest moon of Jupiter, after Ganymede. It is also the third-largest moon in the Solar System, following Ganymede and Saturn's moon Titan, and nearly as large as the planet Mercury, but only about a third of that planet's mass.
Excerpt from the Wikipedia article Callisto (moon), licensed CC BY-SA 4.0.