****** WARNING - VOLUME 1.0 - THIS VOLUME HAS BEEN SUPERCEDED ******

<pre>
OBJECT = MISSION
  MISSION_NAME =  "GALILEO"

OBJECT = MISSION_INFORMATION
     MISSION_START_DATE              = 1977-10-01
     MISSION_STOP_DATE               = 1997-11-11
     MISSION_ALIAS_NAME              = "JUPITER ORBITER-PROBE 
(JOP)"
MISSION_DESC = "


    Mission Overview
    ================
      The Galileo mission utilized a single launch of a combined
      Orbiter and Probe using the space shuttle Atlantis and an
      inertial upper stage (IUS) to inject the Galileo spacecraft on
      its interplanetary trajectory to Jupiter.  The launch occured
      October 18, 1989.  Since the IUS does not have the energy to
      inject Galileo on a direct trajectory to Jupiter, the
      spacecraft was launched first towards Venus for the first leg
      of its Venus-Earth-Earth gravity assist (VEEGA) trajectory.
      Target-of-opportunity science observations were made at Venus
      (closest approach February 10, 1990), the first Earth encounter
      (closest approach to Earth and Moon December 8, 1990), the
      asteroid Gaspra (closest approach October 29, 1991), the second
      Earth encounter (closest approach to Earth and Moon December 8,
      1992), and the asteroid Ida (closest approach August 28, 1993).

      At about 150 days before Galileo arrives at Jupiter, the Probe
      will be separated from the Orbiter.  From this moment, the
      Probe will be on a ballistic trajectory to the Probe entry
      point, about 6 degrees north latitude, into the atmosphere of
      Jupiter.  Using its 400 Newton engine for the first time, the
      Orbiter executes an Orbiter deflection maneuver to keep from
      following the Probe into the atmosphere of Jupiter, and to
      retarget the Orbiter to the proper encounter conditions
      required for the Jupiter Orbit Insertion phase of the mission.

      A close flyby (about 1,000 kilometer altitude) of the Jovian
      satellite Io will occur during the Jupiter Orbit Insertion
      phase.  This flyby will permit science observations and will
      slow the Orbiter down relative to Jupiter by nearly 200
      meters/second in order to reduce the propellant required during
      the Jupiter Orbit Insertion (JOI).  Perijove of about 4 Jupiter
      radii occurs about 4 hours after Io encounter.  A few minutes
      after perijove passage, the Probe entry and beginning of the
      relay of data from the Probe to the Orbiter occurs.

      The Probe mission and data relay lasts 75 minutes, after which
      JOI is performed, slowing the Orbiter down relative to Jupiter
      by about 630 meters/second.  The initial orbit period is about
      200 days.  A large 400 Newton engine burn is performed at the
      first apojove in order to raise perijove from 4 Jupiter radii
      to about 9 Jupiter radii, thus allowing at least 11 orbits with
      10 targeted satellite encounters to be completed by the Orbiter
      without exceeding the allowed total accumulated radiation
      exposure at the spacecraft.  Only three orbits would be allowed
      before exceeding this limit if perijove were allowed to stay at
      4 Jupiter radii, where the radiation environment is very
      severe.  Also during this perijove raise maneuver, Galileo is
      targeted to the satellite Ganymede, the first of its Galilean
      satellite encounters following JOI.

      At this point, the targeting to satellite encounters begins,
      such that a satellite tour consisting of a minimum of 10
      targeted satellite encounters is achieved within the 23 month
      period allotted for the satellite tour.  During the course of
      the satellite tour, the orientation, shape and size of the
      spacecraft orbits around the Jovian system, referred to as
      petals because of how the spacecraft orbits appear on a plan
      view of the Jovian satellite tour trajectory, is controlled
      almost exclusively by gravity assists of the satellites
      themselves.  The orbit periods are pumped down by successive
      encounters with the satellites from the initial 200 days to
      approximately 35-40 days between encounters.  At the 9th orbit,
      when the orbit petal orientation is approximately in the
      anti-sun direction, the period is again pumped up to about 100
      days, allowing one of the primary objectives, probing the
      Jovian magnetotail, to be accomplished.  After this magnetotail
      orbit, the period is again pumped down, by gravity assist
      encounters with the Jovian satellites, to 35-40 days for the
      final 2-3 targeted encounters.  (Refer to GLLMS1991,
      GLLSRD1989; and GLLIOM1992).
 
 
    Mission Phases
    ==============


      LAUNCH
      ------
        Galileo was launched on October 18, 1989 at 1654 GMT aboard
        the Space Shuttle Atlantis (OV-104), flight STS-34.  An
        Inertial Upper Stage (IUS-19) placed Galileo on its Earth-
        to-Venus trajectory.  Following the IUS burn, Galileo
        configured itself for solo flight and separated from the IUS
        on October 19, 1989 at 0107 GMT.  (Refer to GLLMS1991).


      Spacecraft Id                  : GO
      Target Name                    : VENUS
      Mission Phase Start Time       : 1989-10-18T00:00:0
      Mission Phase Stop Time        : 1989-10-19T00:00:0
      Spacecraft Operations Type     : FLYBY


      INTERPLANETARY CRUISE
      ---------------------
        The trajectory of the spacecraft from Earth to Jupiter was
        dictated by the limited propulsion capability allowed within
        the Space Shuttle to boost the spacecraft from Earth orbit to
        an interplanetary trajectory.  This limit prevented a direct
        trajectory from Earth to Jupiter; instead a 'VEEGA'
        trajectory was used to achieve the energy necessary to send
        Galileo to Jupiter.  The acronym VEEGA is from the trajectory
        description: Venus-Earth-Earth Gravity Assist.  In this
        trajectory, Galileo passes Venus once, then flies by Earth
        twice, thus obtaining three gravity assists before heading
        toward Jupiter.  (Refer to SSR1992.) The Earth-Jupiter Cruise
        phase includes the following phases: Earth-Venus Cruise,
        Venus Encounter, Venus-Earth Cruise, Earth1 Encounter,
        Earth-Earth Cruise, Gaspra Encounter, Earth2 Encounter,
        Earth-Jupiter Cruise, Ida Encounter, Shoemaker-Levy 9
        Encounter, Probe Release.


      Spacecraft Id                  : GO
      Target Name                    : JUPITER
      Target Name                    : VENUS
      Target Name                    : EARTH
      Target Name                    : IDA
      Target Name                    : GASPRA
      Target Name                    : SHOEMAKER/LEVY 9
      Mission Phase Start Time       : 1989-10-19T00:00:0
      Mission Phase Stop Time        : 1995-10-08T00:00:0


      EARTH-VENUS CRUISE
      ------------------
        The Earth-Venus Cruise phase occurred during the
        Interplanetary Cruise phase.  It lasted from the end of the
        Launch sequence to March 5, 1990.  This phase included the
        encounter with the planet Venus.


      Spacecraft Id                  : GO
      Target Name                    : VENUS
      Mission Phase Start Time       : 1989-10-19T00:00:0
      Mission Phase Stop Time        : 1990-02-19T00:00:0
      Spacecraft Operations Type     : FLYBY


      4-DAY CHECKOUT
      --------------
        The 4-Day Checkout phase occurred during the Interplanetary
        Cruise phase.


      Spacecraft Id                  : GO
      Target Name                    : N/A
      Mission Phase Start Time       : 1989-12
      Mission Phase Stop Time        : UNK
      Spacecraft Operations Type     : FLYBY



      VENUS ENCOUNTER
      ---------------
        The Venus Encounter phase occurred during the Interplanetary
        Cruise phase.  A 10-day single load sequence provided the
        sequencing resources for the Venus encounter.  Most of the
        data gathered were put onto the onboard tape recorder, since
        the high gain antenna had to remain furled behind its
        sunshade during this near-sun activity, and the low gain
        antenna did not have the performance for real-time science
        data transmission to Earth during the Venus encounter.  The
        Venus encounter data was played back to Earth in November
        1990, when Galileo was close enough to Earth that science
        data rates could be achieved over the low gain antenna.
        Upstream energetic particles were detected, bowshock
        crossings were indicated, and the plasma wave instrument saw
        evidence of lightning discharges.  Eighty-one images by the
        Solid State Imaging experiment were taken, which proved
        useful in atmospheric motion studies.  In addition, the Venus
        encounter yielded radio tracking data which have been
        analyzed by the Radio Science (Celestial Mechanics) Team to
        obtain a mass estimate for Venus.  In contrast to the other
        experiments, the Radio Science data were not stored on the
        spacecraft recorder, but were available in real time on Earth
        for analysis.  (Refer to GLLMS1991).  Closest approach to
        Venus occurred February 10, 1990 at an altitude of 16,123 km.
        at 05:58:48 UTC.


      Spacecraft Id                  : GO
      Target Name                    : VENUS
      Time of closest approach       : 1990-02-10T05:58:48
      Mission Phase Start Time       : 1990-02-06T00:00:0
      Mission Phase Stop Time        : 1990-02-16T00:00:0
      Spacecraft Operations Type     : FLYBY


      VENUS-EARTH CRUISE
      ------------------
        The Venus Cruise phase occurred during the Interplanetary
        Cruise phase.  It included the interplanetary cruise from
        Venus, around the sun, and back to and past the Earth.  This
        phase also included the first Earth encounter.  The primary
        science gathering during this period was performed through
        EUV, DDS, MAG and the USO Redshift experiments.  In November
        1990, as the spacecraft approached the first Earth encounter,
        the three DMS tracks of Venus data were successfully played
        back.


      Spacecraft Id                  : GO
      Target Name                    : EARTH
      Target Name                    : MOON
      Mission Phase Start Time       : 1990-02-19T00:00:0
      Mission Phase Stop Time        : 1991-04-29T00:00:0
      Spacecraft Operations Type     : FLYBY


      EARTH1 ENCOUNTER
      ----------------
        The first Earth gravity assist occurred on December 8, 1990
        at a flyby altitude of 960 km at 20:34:34 UTC.

        The spacecraft trajectory took Galileo virtually up the
        Earth's magnetotail, providing unprecedented opportunity for
        fields and particles measurements.  The plasma science
        experiment results brought into question the validity of the
        previous assumption that the bulk flows of the ion and
        electron plasmas in the distant magnetotail are identical.
        Spectral mapping observations of Australia and Antarctica
        were made by the near infrared mapping spectrometer.  A first
        ever time-lapse movie, in six colors, of the rotating Earth
        over a period slightly greater than one day was made by the
        Solid State Imaging experiment.  Multispectral imaging of the
        western nearside and eastern farside of the Moon were
        obtained by the SSI.  This data showed that Orientale Basin
        ejecta deposits are similar to typical highlands deposits
        such as the soils at the Apollo 16 site, while observations
        of the South Pole-Aitken basin interior contain
        characteristics that appear distinctively different from that
        of nearside maria, thus providing new information on mare
        deposits on the limb and farside of the Moon.
 
        The High-Gain Antenna Deployment planned for April 11, 1991
        was unsuccessful, most likely due to an incomplete release of
        three HGA ribs.  Future attempts for rib release were then
        scheduled for Earth-Earth Cruise.


      Spacecraft Id                  : GO
      Target Name                    : EARTH
      Time of closest approach       : 1990-12-08T20:34:34
      Target Name                    : MOON
      Mission Phase Start Time       : 1990-11-08T00:00:0
      Mission Phase Stop Time        : 1990-12-16T00:00:0
      Spacecraft Operations Type     : FLYBY


      EARTH-EARTH CRUISE
      ------------------
        The Earth-Earth cruise phase occurred during the
        Interplanetary Cruise phase.  It included the interplanetary
        cruise from Earth, around the sun, and back to and past the
        Earth a second time.  Key activites included the on-going HGA
        Recovery effort, which proved unsuccessful, encounters with
        the asteroid Gaspra as well as with Earth, collection of
        cruise science data, SSI cover and EPD shade deployments and
        opportunities for radio science experiments at spacecraft
        conjunction and opposition.


      Spacecraft Id                  : GO
      Target Name                    : EARTH
      Target Name                    : MOON
      Target Name                    : GASPRA
      Mission Phase Start Time       : 1991-04-29T00:00:0
      Mission Phase Stop Time        : 1993-04-12T00:00:0
      Spacecraft Operations Type     : FLYBY


      GASPRA ENCOUNTER
      ----------------
        The Gaspra Encounter phase occurred during the Interplanetary
        Cruise phase and the Earth-Earth Cruise phase.  On 29 October
        1991 Galileo passed Gaspra at a distance of approximately
        1,600 km and a speed of approximately 30,000 km per hour.
        Color and black and white images were taken of Gaspra as well
        as measurements to indicate composition and physical
        properties.  The data were stored on the spacecraft tape
        recorder and later played back to Earth.


      Spacecraft Id                  : GO
      Target Name                    : GASPRA
      Time of closest approach       : 1991-10-29T22:36:59
      Spacecraft Operations Type     : FLYBY


      EARTH2 ENCOUNTER
      ----------------
        The Earth2 Encounter phase occurred during the Interplanetary
        Cruise phase and the Earth-Earth Cruise phase.  The second
        Earth encounter provided an opportunity to gather Earth and
        Lunar science and perform instrument calibrations.
        Additionally, during this period Galileo participated in the
        GOPEX deep space laser communication experiment.  The flyby
        altitude of the Earth 2 was approximately 304 km at 15:09
        UTC.


      Spacecraft Id                  : GO
      Target Name                    : EARTH
      Time of closest approach       : 1992-12-08T15:09:00
      Target Name                    : MOON
      Mission Phase Start Time       : 1992-11-08T00:00:0
      Mission Phase Stop Time        : 1992-12-20T00:00:0
      Spacecraft Operations Type     : FLYBY


      EARTH-JUPITER CRUISE
      --------------------
        The Earth-Jupiter Cruise phase occurs during the
        Interplanetary Cruise phase.  It covers the period from April
        12, 1993 to October 8, 1995.  The second Earth encounter
        places the spacecraft on a direct trajectory to Jupiter.
        Again, the spacecraft passes through the Asteroid Belt.  This
        transit includes an August 1993 encounter with the
        32-km.-diameter, S-type, main-belt asteroid, Ida.  The
        Earth-Jupiter Cruise phase includes the following phases: Ida
        Encounter, Shoemaker-Levy 9 Encounter, Probe Release.


      Spacecraft Id                  : GO
      Target Name                    : JUPITER
      Target Name                    : IDA
      Target Name                    : SHOEMAKER-LEVY 9
      Mission Phase Start Time       : 1993-04-12T00:00:0
      Mission Phase Stop Time        : 1995-10-09T00:00:0
      Spacecraft Operations Type     : FLYBY


      IDA ENCOUNTER
      -------------
        The Ida Encounter phase occurs during the Interplanetary
        Cruise phase and the Earth-Jupiter Cruise phase.  Galileo
        flies by Ida in the southern hemisphere (75 degrees south
        ecliptic latitude) on the asteroid's dark side, passing
        approximately 2400 km (1500 mi) from the center of the
        asteroid while traveling at a speed relative to the asteroid
        of 12.4 km/sec (27,700 mph).  During closet approach, Ida
        appears from Earth to be located at Right Ascension: 196.7
        degrees; Declination: -8.0 degrees toward the constellation
        Virgo.  Ida is 3-4 degrees northwest of Spica, Virgo's
        brightest star.


      Spacecraft Id                  : GO
      Target Name                    : IDA
      Time of closest approach       : 1993-08-28T16:35:00
      Spacecraft Operations Type     : FLYBY


      SHOEMAKER-LEVY 9 ENCOUNTER
      --------------------------
        The Shoemaker-Levy 9 Encounter phase occurred during the
        Interplanetary Cruise phase and the Earth-Jupiter Cruise
        phase.  Shoemaker-Levy 9 was a comet that broke into multiple
        pieces during its passage by Jupiter in July 1992.  On July
        16,1994 these fragments began to impact Jupiter.  It is
        estimated that between 20 and 25 struck the planet.
        Observations were made by the following instruments: NIMS,
        SSI, PPR, PWS, EUV/UVS.  MAG and DDS conducted observations
        over a longer period of time.


      Spacecraft Id                  : GO
      Target Name                    : SHOEMAKER-LEVY 9
      Mission Phase Start Time       : 1994-07-16T00:00:0
      Mission Phase Stop Time        : 1994-07-22T00:00:0
      Spacecraft Operations Type     : FLYBY


      PROBE RELEASE
      -------------
        The Probe Release Encounter phase occurs during the
        Interplanetary Cruise phase and the Earth-Jupiter Cruise
        phase.  The Probe is released 150 days before Jupiter Orbit
        Insertion (JOI).  Seven days after release, the Orbiter
        performs an Orbit Deflection Maneuver (ODM) of about 60 m/sec
        to place it on a trajectory which overflies the Probe during
        its entry and descent.  The ODM is the first use of the 400 N
        engine.


      Spacecraft Id                  : GP
      Spacecraft Id                  : GO
      Target Name                    : JUPITER
      Mission Phase Start Time       : 1995-07-12T12:21:50
      Mission Phase Stop Time        : 1995-07-12T12:21:50
      Spacecraft Operations Type     : FLYBY


      JUPITER ORBIT OPERATIONS
      ------------------------
        Jupiter arrival occurs on December 3, 1995.  Arrival day at
        Jupiter is characterized by a rapid series of high-priority
        engineering and science events, starting with a 32,000 km
        non-targeted flyby of Europa.  About 4 1/2 hours after the
        Europa encounter, the spacecraft then flies within about 1000
        km.  of Io.  In addition to its unique science value (this is
        the only close encounter of Io), the flyby is designed to
        provide a gravity assist which will reduce the delta-V
        necessary to achieve orbit around Jupiter.
 
        The probe entry occurs a little over 4 hours after the Io
        encounter.  During the descent of the Probe its data is
        relayed to Earth by the Orbiter.  Probe Relay lasts 75
        minutes and is followed about one hour later by the JOI burn.
 
        At apojove of the insertion orbit, a large Perijove Raise
        Maneuver (PJR) increases the perijove altitude of the orbit
        and targets the spacecraft for its first encounter.  From
        here on, the trajectory, or tour, is primarily shaped by
        close encounters with Ganymede, Callisto, and Europa.  Ten
        such close encounters, one per orbit, plus a one-month
        'phasing orbit' which occurs between the Europa 4 encounter
        and the Europa 6 encounter are planned over the 23 months of
        the orbital mission.  There is no targeted encounter during
        the phasing orbit.  There are several non-targeted encounters
        (at ranges of tens to hundreds of thousands of kilometers) of
        the Galilean satellites, Jovian atmospheric and
        magnetospheric measurements throughout the tour, and a large
        'tail petal' orbit designed to explore the Jovian
        magnetotail.


      Spacecraft Id                  : GO
      Target Name                    : JUPITER
      Target Name                    : IO
      Target Name                    : CALLISTO
      Target Name                    : GANYMEDE
      Target Name                    : EUROPA
      Mission Phase Start Time       : 1995-10-09T00:00:0
      Mission Phase Stop Time        : 1997-12-03T00:00:0
      Spacecraft Operations Type     : ORBITER


      JUPITER APPROACH
      ----------------
        The Jupiter Approach phase occurs during the Jupiter Orbit
        Operations phase.  At 60 days before JOI, an intensive study
        of the Jovian system begins, including atmospheric,
        magnetospheric, and satellite observations.


      Spacecraft Id                  : GO
      Target Name                    : JUPITER
      Mission Phase Start Time       : 1995-10-09T00:00:0
      Mission Phase Stop Time        : 1995-12-03T00:00:0
      Spacecraft Operations Type     : FLYBY


      JUPITER 0 ORBIT
      ---------------
        The Jupiter 0 Orbit phase occurs during the Jupiter Orbit
        Operations phase.  Jupiter arrival occurs on December 3,
        1995.  Arrival day at Jupiter is characterized by a rapid
        series of high-priority engineering and science events,
        starting with a 32,000 km non-targeted flyby of Europa.


      Spacecraft Id                  : GO
      Target Name                    : JUPITER
      Target Name                    : IO
      Mission Phase Start Time       : 1995-12-03T00:00:0
      Mission Phase Stop Time        : 1996-06-29T00:00:0
      Spacecraft Operations Type     : ORBITER


      IO 0 ORBIT
      ----------
        The Io 0 Orbit phase occurs during the Jupiter Orbit
        Operations phase.  About 4 1/2 hours after the Europa
        encounter, the spacecraft flies within about 1000 km.  of Io.
        In addition to its unique science value (this is the only
        close encounter of Io), the flyby is designed to provide a
        gravity assist which reduces the delta-V necessary to achieve
        orbit around Jupiter.


      Spacecraft Id                  : GO
      Target Name                    : IO
      Mission Phase Start Time       : 1995-12-02T00:00:0
      Mission Phase Stop Time        : 1995-12-10T00:00:0
      Spacecraft Operations Type     : FLYBY


      PROBE
      -----
        The Probe phase occurs during the Jupiter Orbit Operations
        phase.  The probe entry occurs a little over 4 hours after
        the Io encounter.  During the descent of the Probe its data
        is relayed to Earth by the Orbiter.  Probe Relay lasts 75
        minutes and is followed about one hour later by the JOI burn.


      Spacecraft Id                  : GP
      Spacecraft Id                  : GO
      Target Name                    : JUPITER
      Mission Phase Start Time       : 1995-12-07T22:56:0
      Mission Phase Stop Time        : 1995-12-08T00:11:0
      Spacecraft Operations Type     : ORBITER


      GANYMEDE 1 ORBIT
      ----------------
      Spacecraft Id                  : GO
      Target Name                    : GANYMEDE
      Mission Phase Start Time       : 1996-06-29T00:00:0
      Mission Phase Stop Time        : 1996-09-01T00:00:0
      Spacecraft Operations Type     : ORBITER


      GANYMEDE 1 ENCOUNTER
      --------------------
        Objectives: Wake, Alfven Wing, UVS, gravity, reduce period.
        Altitude: 500 km, Latitude: 25 degrees


      Spacecraft Id                  : GO
      Target Name                    : GANYMEDE
      Mission Phase Start Time       : 1996-06-29T00:00:0
      Mission Phase Stop Time        : 1996-07-06T00:00:0
      Spacecraft Operations Type     : FLYBY


      GANYMEDE 2 ORBIT
      ----------------
      Spacecraft Id                  : GO
      Target Name                    : GANYMEDE
      Mission Phase Start Time       : 1996-09-01T00:00:0
      Mission Phase Stop Time        : 1996-11-02T00:00:0
      Spacecraft Operations Type     : ORBITER


      GANYMEDE 2 ENCOUNTER
      --------------------
        Objectives: Alfven Wing, gravity, reduce inclination
        Altitude: 255 km, Latitude: 85 degrees


      Spacecraft Id                  : GO
      Target Name                    : GANYMEDE
      Mission Phase Start Time       : 1996-09-01T00:00:0
      Mission Phase Stop Time        : 1996-09-08T00:00:0
      Spacecraft Operations Type     : FLYBY


      CALLISTO 3 ORBIT
      ----------------
      Spacecraft Id                  : GO
      Target Name                    : CALLISTO
      Mission Phase Start Time       : 1996-11-02T00:00:0
      Mission Phase Stop Time        : 1996-12-15T00:00:0
      Spacecraft Operations Type     : ORBITER


      CALLISTO 3 ENCOUNTER
      --------------------
        Objectives: Wake, Alfven Wing, UVS counter-rotate, Jupiter
        occultation.  
        Altitude: 1100 km, Latitude: 13 degrees


      Spacecraft Id                  : GO
      Target Name                    : CALLISTO
      Mission Phase Start Time       : 1996-11-02T00:00:0
      Mission Phase Stop Time        : 1996-11-09T00:00:0
      Spacecraft Operations Type     : FLYBY


      EUROPA 4 ORBIT
      --------------
      Spacecraft Id                  : GO
      Target Name                    : EUROPA
      Mission Phase Start Time       : 1996-12-15T00:00:0
      Mission Phase Stop Time        : 1997-02-14T00:00:0
      Spacecraft Operations Type     : ORBITER


      EUROPA 4 ENCOUNTER
      ------------------
        Objectives: Wake, Europa & Jupiter occultations 
        Altitude: 695 km, Latitude: 0 degrees


      Spacecraft Id                  : GO
      Target Name                    : EUROPA
      Mission Phase Start Time       : 1996-12-15T00:00:0
      Mission Phase Stop Time        : 1996-12-22T00:00:0
      Spacecraft Operations Type     : FLYBY


      EUROPA 6 ORBIT
      --------------
      Spacecraft Id                  : GO
      Target Name                    : EUROPA
      Mission Phase Start Time       : 1997-02-14T00:00:0
      Mission Phase Stop Time        : 1997-03-30T00:00:0
      Spacecraft Operations Type     : ORBITER


      EUROPA 6 ENCOUNTER
      ------------------
        Objectives: Europa, Io, and Jupiter occultations 
        Altitude: 588 km, Latitude: 17 degrees


      Spacecraft Id                  : GO
      Target Name                    : EUROPA
      Mission Phase Start Time       : 1997-02-14T00:00:0
      Mission Phase Stop Time        : 1997-02-21T00:00:0
      Spacecraft Operations Type     : FLYBY


      GANYMEDE 7 ORBIT
      ----------------
      Spacecraft Id                  : GO
      Target Name                    : GANYMEDE
      Mission Phase Start Time       : 1997-03-30T00:00:0
      Mission Phase Stop Time        : 1997-05-02T00:00:0
      Spacecraft Operations Type     : ORBITER


      GANYMEDE 7 ENCOUNTER
      --------------------
        Objectives: Alfven Wing.  
        Altitude: 3065 km, Latitude: 56 degrees


      Spacecraft Id                  : GO
      Target Name                    : GANYMEDE
      Mission Phase Start Time       : 1997-03-30T00:00:0
      Mission Phase Stop Time        : 1997-04-06T00:00:0
      Spacecraft Operations Type     : FLYBY


      GANYMEDE 8 ORBIT
      ----------------
      Spacecraft Id                  : GO
      Target Name                    : GANYMEDE
      Mission Phase Start Time       : 1997-05-02T00:00:0
      Mission Phase Stop Time        : 1997-06-22T00:00:0
      Spacecraft Operations Type     : ORBITER


      GANYMEDE 8 ENCOUNTER
      --------------------
        Objectives: Ganymede & Jupiter occultations, distant UVS
        Altitude: 1584 km, Latitude: 29 degrees


      Spacecraft Id                  : GO
      Target Name                    : GANYMEDE
      Mission Phase Start Time       : 1997-05-02T00:00:0
      Mission Phase Stop Time        : 1997-05-09T00:00:0
      Spacecraft Operations Type     : FLYBY


      CALLISTO 9 ORBIT
      ----------------
      Spacecraft Id                  : GO
      Target Name                    : CALLISTO
      Mission Phase Start Time       : 1997-06-22T00:00:0
      Mission Phase Stop Time        : 1997-09-13T00:00:0
      Spacecraft Operations Type     : ORBITER


      CALLISTO 9 ENCOUNTER
      --------------------
        Objectives: Callisto & Jupiter occultations, tail petal
        Altitude: 416 km, Latitude: 2 degrees


      Spacecraft Id                  : GO
      Target Name                    : CALLISTO
      Mission Phase Start Time       : 1997-06-22T00:00:0
      Mission Phase Stop Time        : 1997-06-28T00:00:0
      Spacecraft Operations Type     : FLYBY


      CALLISTO 10 ORBIT
      -----------------
      Spacecraft Id                  : GO
      Target Name                    : CALLISTO
      Mission Phase Start Time       : 1997-09-13T00:00:0
      Mission Phase Stop Time        : 1997-11-02T00:00:0
      Spacecraft Operations Type     : ORBITER


      CALLISTO 10 ENCOUNTER
      ---------------------
        Objectives: Wake, Alfven Wing, Jupiter Occultation, rotate,
        UVS, reduce period.  
        Altitude: 524 km, Latitude: 5 degrees


      Spacecraft Id                  : GO
      Target Name                    : CALLISTO
      Mission Phase Start Time       : 1997-09-13T00:00:0
      Mission Phase Stop Time        : 1997-09-20T00:00:0
      Spacecraft Operations Type     : FLYBY


      EUROPA 11 ORBIT
      ---------------
      Spacecraft Id                  : GO
      Target Name                    : EUROPA
      Mission Phase Start Time       : 1997-11-02T00:00:0
      Mission Phase Stop Time        : 1997-12-07T00:00:0
      Spacecraft Operations Type     : ORBITER


      EUROPA 11 ENCOUNTER
      -------------------
        Objectives: Alfven Wing, Earth occultation 
        Altitude: 1119 km, Latitude: 66 degrees


      Spacecraft Id                  : GO
      Target Name                    : EUROPA
      Mission Phase Start Time       : 1997-11-02T00:00:0
      Mission Phase Stop Time        : 1997-11-09T00:00:0
      Spacecraft Operations Type     : FLYBY


"


MISSION_OBJECTIVES_SUMMARY = "


    Mission Objectives Summary
    ==========================
      The Galileo mission is designed to make long-term
      investigations of the Jovian system using a spacecraft
      consisting of a Probe and an Orbiter.  The Probe, after being
      released on the initial approach to Jupiter, will enter the
      Jovian atmosphere and make in-situ measurements.  The Probe
      data will be relayed to Earth by the Orbiter.  The Orbiter will
      then enter orbit around Jupiter for a 23-month, 10-satellite
      encounter tour of the Jovian system.

      Specific science objectives of the Galileo mission are:

      Jovian Atmosphere: Determine and investigate the chemical
      composition; structure to at least 10 bars; radiative heat
      balance; circulation and dynamics; nature of cloud particles.

      Gaspra, Ida, and Galilean Satellites: Characterize the
      morphology, geology and physical state; investigate the surface
      mineralogy and surface distribution of minerals.

      Galilean Satellites: Determine the gravitational and magnetic
      fields and dynamic properties; study the atmospheres,
      ionospheres and extended gas clouds; study the magnetospheric
      interactions of the satellites.

      Jovian Magnetosphere: Characterize the vector magnetic fields
      and the energy spectra, composition and angular distribution of
      plasma and energetic particles, including plasma wave
      phenomena, out to 150 Rj."
END_OBJECT = MISSION_INFORMATION

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = EARTH
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = GASPRA
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = JUPITER
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = MOON
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = VENUS
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = IDA
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = "SHOEMAKER-LEVY 9"
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = GANYMEDE
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = CALLISTO
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST

OBJECT = MISSION_HOST
INSTRUMENT_HOST_ID = GO
  OBJECT = MISSION_TARGET
    TARGET_NAME = EUROPA
  END_OBJECT = MISSION_TARGET
END_OBJECT = MISSION_HOST


 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "CHAPMAN1991"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "CLARKE1988"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "CLARKE1989"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "FANALE1990"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "FRANK1991"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "GLLIOM1992"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "GLLMS1991"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "GLLPP1985"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "GLLSRD1989"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "HEAD1991B"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "INGERSOLL1991"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
 
OBJECT = MISSION_REFERENCE_INFORMATION
  REFERENCE_KEY_ID = "SSR1992"
END_OBJECT = MISSION_REFERENCE_INFORMATION
 
END_OBJECT = MISSION

END
</pre>