MoonMoon of Jupiter
Orthosie
A retrograde irregular moon of Jupiter in the Ananke group.
2km
Diameter20,721,000km
From Jupiter622.6days
Orbital Period2001
DiscoveredAbout
Orthosie is a retrograde irregular moon of Jupiter in the Ananke group.
Properties
2km
Diameter20,721,000km
Semi-major Axis622.56days
Orbital Period2001
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