Astronomy   View all facts   Glossary   Help

physical object > natural object > celestial body > natural satellite > Galilean satellite > Io

Io (Jupiter I, Jupiter I)
subject			fact

Io	has albedo 0.91
	has period 1.77 days
	has inclination i = 0.03
	has eccentricity e = 0.01
	has radius R &asmyp; 1850 km (data from Pioneer 10)
	has mean density 3.48 g (data from Pioneer 10)
	is a part of Jupiter
	has synonym Jupiter I
	has synonym Jupiter I
	has definition The innermost Galilean satellite of Jupiter, similar in size and density to the Moon. Jupiter's decametric radiation has been linked at least partially to Io. It has the highest mean density of any of the Galilean satellites. Pioneer 10 also detected the presence of an ionosphere, and Na D emission. It also has the highest albedo in the solar system.
	is an instance of Galilean satellite
Galilean satellite	is a part of Jupiter
	has discovery date 1610
	has discoverer Galileo
celestial body	has spectra
satellite	orbits a more massive physical object
	has approximately elliptical orbit
	has orbital period
	has orbital inclination
physical object	has location or center of gravity
	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Next Galilean satellite: Callisto    Up: Galilean satellite    Previous Galilean satellite: Ganymede