MoonMoon of Jupiter
Eirene
A retrograde irregular moon of Jupiter in the Carme group.
4km
Diameter23,498,000km
From Jupiter739.3days
Orbital Period2003
DiscoveredAbout
Eirene is a retrograde irregular moon of Jupiter in the Carme group.
Properties
4km
Diameter23,498,000km
Semi-major Axis739.29days
Orbital Period2003
Discovery YearScott S. Sheppard
Discovered ByOther Moons of Jupiter

Io
The most volcanically active body in the solar system and innermost Galilean moon.
3,643.2 km
Diameter
1.8 d
Orbit
1610
Discovered

Europa
Jupiter moon with a subsurface ocean considered a prime candidate for extraterrestrial life.
3,121.6 km
Diameter
3.6 d
Orbit
1610
Discovered

Ganymede
The largest moon in the solar system, bigger than Mercury, with its own magnetic field.
5,268.2 km
Diameter
7.2 d
Orbit
1610
Discovered

Callisto
Jupiter's second-largest moon with the most cratered surface in the solar system.
4,820.6 km
Diameter
16.7 d
Orbit
1610
Discovered