Io - Galileo

Pele and Loki on Jupiter's satellite Io

Galileo image of Jupiter's moon Io showing the volcanic centers Pele and Loki Patera. Pele is at the center of the large red circle in th elower part of the image. Pele has exibited the largest volcanic plume on Io, which has deposted the material forming the red ring. Loki Patera is the black horseshoe-shaped feature near the terminator towards the upper left. Io is the most volcanically active body in the solar system. The varied colors on the surface are due to sulfur rich compounds. Features as small as 12 km can be resolved in this image. Io is 3640 km in diameter and north is up. (Galileo, P-49758)
Larger image (134K) jpg

High resolution tif file (1.1M)

Location & Time Information
Date/Time (UT): 1997-04-04
Distance/Range (km): 600,000.
Central Latitude/Longitude (deg): N/A
Orbit(s): Flyby, 7th orbit of Jupiter

Imaging Information
Area or Feature Type: global view
Instrument: Solid State Imaging CCD Camera
Instrument Resolution (pixels): 800 x 800, 8 bit
Instrument Field of View (deg): 0.46 x 0.46
Filter: clear, red, green, violet
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-49758
Other Image ID number: MRPS-84585
NSSDC Data Set ID (Photo): NSD XD-12A
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