Galileo Callisto 3 Flyby Entry Timeline


Callisto 3 Flyby was 04 November 1996

Galileo's first flyby of Callisto, Jupiter's second largest satellite and the third largest satellite in the solar system, occurred on 04 November 1996. At 13:34 UTC, Galileo came about 1098 km (within about 6 km of the target 1104 km) from the surface of Callisto. As measured to the center of Callisto, more than 100 times closer than Voyager 1 in 1979 and almost 200 times closer than Voyager 2 did later that same year. During this time, observations were also made of the Jovian magnetosphere as well as of the other satellites of Jupiter.

During the Callisto flyby, enhancements in NASA's Deep Space Network were implemented to permit a higher data return rate from Galileo which, coupled with other improvements, raised it from a mere 10 bps to close to 1,000 bps. This change should permit the project to accomplish 70% of the original science goals at Jupiter.

The following timeline is a list of different events which will occur beginning with the official start of the Callisto 3 (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
________              __________    _____
02 Nov  16:00                       Start of Callisto 3 encounter

03 Nov  02:14         UVS           First Jovian aurora observation
        19:44         SSI           Callisto Asgard Basin observation

04 Nov  03:30         RS            Callisto gravity field measurement
        13:11         F&P           Callisto wake crossing recording
        13:30                       Callisto closest approach (3,510 km)
        13:35         SSI           Callisto Valhalla observation
        14:18         PPR           Callisto dark map observation
        19:43         UVS           Last Callisto 3 Io torus observation

05 Nov  02:14         NIMS          First white oval observation
        07:05         F&P           Jovian aurora recording

06 Nov  04:00         NIMS          First Io monitoring observation
        06:07         SSI           Io topographical map
        11:49         NIMS          High spatial and spectral Io observations
        12:05                       Io closest approach (244,000 km)
        13:27                       Jupiter closest approach (658,000 km)
        18:43                       Europa closest approach (34,000 km)
        20:27         PPR           Europa dark map observation
        20:41         NIMS          Europa limb occultation observation
        23:21         NIMS          Last Io monitoring observation

07 Nov  02:50                       Science turn (high-phase Jupiter)
        04:49                       Ganymede closest approach (1,050,000 km)
        17:40         NIMS          Last white oval observation
        20:30                       Turn to return to Earth point

08 Nov  10:36                       Start Earth occultation by Jupiter
        17:15                       End Earth occultation by Jupiter
        23:00                       Science turn (Solar occultation)

09 Nov  02:18                       Start solar occultation by Jupiter
        02:35         UVS           First solar occultation observation
        05:18         SSI           Last Jovian aurora observation
        10:00                       Turn to return to Earth point
        10:15                       End solar occultation by Jupiter
        13:10         UVS           Last solar occultation observation

10 Nov  07:00                       Orbital Trim Maneuver (OTM) 14

11 Nov  02:00                       Start of data playback (Callisto 3)
        20:00         F&P           End first magnetosphere mini-tour
        20:00                       Turn for attitude maintenance

27 Nov  19:43                       Orbital Trim Maneuver (OTM) 15

02 Dec  09:01                       First Europa OPNAV (for Europa 4)

10 Dec  13:59         EUV/UVS       First Io torus observation (Europa 4)

13 Dec  21:00         F&P           Start Europa 4 real-time survey
        17:21                       Last Europa OPNAV (for Europa 4)

15 Dec  00:00                       End of data playback (Callisto 3)

Other Event Related News


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Author/Curator:
Dr. Edwin V. Bell, II
Mail Code 690.1
NASA Goddard Space Flight Center
Greenbelt, MD 20771
+1-301-286-1187
ed.bell@nasa.gov
[NSSDC Logo]
NASA Official: Dr. Ed Grayzeck V1.0, 17 December 1996
Last updated: Tuesday, 12-Aug-2014 11:26:02 EDT, EVB II