Right ascension:   8:26:22.6   Magnitude:  5.0
    Declination:  20:00:32

Image:  SWP 40998
 Date:  1991 Mar 4 4:08 UT

Exposure duration:  762 min

The ring of sulfur compounds encircling Jupiter, ejected by its volcanic moon Io, is visible as full-aperture (broad) ionized sulfur emission. Neutral sulfur emission from Io itself is seen as point-source (narrow) lines in the spectrum.
Last updated: 08 April 1998
Obtained from IUE project at Goddard Space Flight Center