Galileo's second flyby of Europa, the smallest of Jupiter's Galilean satellites, occured on 20 February 1997 at 17:03 UTC. At that time, Galileo came about 587 km from the surface of Europa (or about 1.4 Europa radii from its center). As measured to the center of Europa, this is nearly 340 times closer than Voyager 1 came in 1979 and about 95 times closer than Voyager 2 did later that same year. This is also about 16% closer than the altitude which Galileo came to Europa on 19 December 1996. During this time, observations were also made of the Jovian magnetosphere as well as of the other satellites of Jupiter.
The following timeline is a list of different events which will occur beginning with the official start of the Europa 6 (the number actually refers to the Galileo orbit number) encounter and proceding until the last data from the encounter are played back. The times are given in Universal Time (UTC) of the event at the spacecraft.
Date/Time Instrument Event ________ __________ _____ 17 Feb 00:00 Start of Europa 6 encounter 00:15 Orbital Trim Maneuver (OTM) 20 21:43 SSI First Io monitoring observation 18 Feb 08:34 UVS/EUV Real-time Jupiter aurora observation 19 Feb 00:55 UVS Jupiter auroral map 02:31 SSI First belt zone observation 23:01 SSI Thebe imaging 20 Feb 12:03 NIMS Europa Terra Incognito observation 12:04 Io closest approach (401,000 km) 16:05 NIMS Europa Arigope Linea observation 16:36 F&P Europa Alfven wing recording 17:03 PPR Europa high-resolution closest approach observation Start Earth occultation by Europa Europa closest approach (2,150 km) 17:04 Start solar occultation by Europa 17:16 End Earth occultation by Europa 17:17 End solar occultation by Europa 20:53 Jupiter closest approach (652,000 km) 21:06 F&P Jupiter magnetic equator recording 21:55 SSI Amalthea imaging 21 Feb 01:23 SSI Europa global color map 10:04 NIMS Last belt zone observation 10:56 SSI Last Io monitoring observation 16:26 Ganymede closest approach (318,000 km) 22 Feb 22:55 Callisto closest approach (279,000 km) 23 Feb 01:30 Start playback 24 Feb 04:00 Orbital Trim Maneuver (OTM) 21 25 Feb 11:47 Science turn (solar occultation) 13:27 Start solar occultation by Jupiter 15:33 NIMS Jupiter rings observation 26 Feb 00:44 Turn to return to Earth point 01:15 End solar occultation by Jupiter 03:00 F&P End Europa 6 real-time survey 19:13 Start Earth occultation by Jupiter 27 Feb 08:38 End Earth occultation by Jupiter 14 Mar 01:15 Orbital Trim Maneuver (OTM) 22 17 Mar 01:10 Turn for attitude maintenance 21 Mar 01:59 F&P Start Ganymede 7 real-time survey 30 Mar 16:00 End of data playback (Europa 6)
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