Io - Voyager 1

Jupiter's satellite, Io, from 377,000 km

Image of Jupiter's innermost Galilean satellite, Io, taken by Voyager 1. Io is about 3,600 km in diameter. The smallest features visible in this image are about 10 km (6 miles) across. Most of the colorful areas are probably recent volcanic deposits. Many of the dark round features may be volcanoes or volcanic vents (Voyager 1, P-21227c)
Larger image: 113K

High resolution tiff file (3.0M)

Location & Time Information
Date/Time (UT): 1979-03-05
Distance/Range (km): 377,000
Central Latitude/Longitude (deg): N/A
Orbit(s): Flyby

Imaging Information
Area or Feature Type: volcano, global view
Instrument: Narrow Angle Vidicon Camera
Instrument Resolution (pixels): 800 x 800, 8 bit
Instrument Field of View (deg): .424 x .424
Filter: N/A
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: P21227c
Other Image ID number: 79-HC-89
NSSDC Data Set ID (Photo): 77-084A-01A
NSSDC Data Set ID (CD): N/A
Other ID: N/A


[NASA Logo] Authors/Curators:

Dave Williams,, (301) 286-1258
Code 690.1, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

Jay Friedlander,, (301) 286-7172
Code 612.4, NASA Goddard Space Flight Center
Greenbelt, MD 20771, USA

NASA Official: Ed Grayzeck,

Last updated: 24 September 2015