Io - Voyager 1

Jupiter's moon Io, with Jupiter in the background

Voyager 1 image of Io against the background of Jupiter's clouds. Io is 3,600 km in diameter, about the size the Earth's Moon. The surface is coated with sulfur compounds, making it six times brighter than the Moon. The brightness variations seen may represent compositional and/or age differences. North is up. (Voyager 1, P-21162)
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High resolution tiff file (1.0 Mb)

Location & Time Information
Date/Time (UT): 1979-02-27 T 10:00
Distance/Range (km): 7,000,000
Central Latitude/Longitude (deg): 00.,180.
Orbit(s): Flyby

Imaging Information
Area or Feature Type: global view
Instrument: Narrow Angle Vidicon Camera
Instrument Resolution (pixels): 800 x 800, 8 bit
Instrument Field of View (deg): .424 x .424
Filter: ultraviolet
Illumination Incidence Angle (deg): N/A
Phase Angle (deg): N/A
Instrument Look Direction: N/A
Surface Emission Angle (deg): N/A

Ordering Information
CD-ROM Volume: N/A
NASA Image ID number: P-21162
Other Image ID number: N/A
NSSDC Data Set ID (Photo): 77-084A-01c
NSSDC Data Set ID (CD): N/A
Other ID: N/A
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Updated 03 March 2003, DRW.