Hubble image archive

Ganymede Disappears Behind Jupiter

This series of images taken with NASA's Hubble Space Telescope shows Jupiter's largest moon, Ganymede, disappearing behind the planet.Ganymede completes an orbit around Jupiter every seven days. Because Ganymede's orbit is tilted nearly edge-on to Earth, it routinely can be seen...

Date
Jan 1, 2008
Mission
Hubble Space Telescope
Archive ID
hubblesite-images-2008-42-2443-image
By

This series of images taken with NASA's Hubble Space Telescope shows Jupiter's largest moon, Ganymede, disappearing behind the planet.

Ganymede completes an orbit around Jupiter every seven days. Because Ganymede's orbit is tilted nearly edge-on to Earth, it routinely can be seen playing a game of "peek-a- boo," passing in front of and disappearing behind its giant host, only to reemerge later. Composed of rock and ice, Ganymede is the largest moon in our solar system. It is even larger than the planet Mercury.

The top images show Ganymede next to Jupiter. The images were taken in blue and red light on Jan. 19, 2005 with Hubble's Advanced Camera for Surveys. The close-up images at bottom follow Ganymede as it ducks behind Jupiter a few minutes later.

Credits

NASA, ESA, E. Karkoschka (University of Arizona)

Image Details

About The Object
Object NameJupiter, Ganymede
Object DescriptionPlanet with Jovian Satellite Visible
DistanceThe semi-major axis of Jupiter's orbit about the sun is 5.2 astronomical units (483 million miles or 778 million km).
DimensionsThe planet has a diameter of roughly 88,789 miles (142,984 km) at the equator.
About The Data
InstrumentHST>ACS/HRC
Exposure DatesJan. 19, 2005

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