From: baalke@kelvin.jpl.nasa.gov (Ron Baalke)
Subject: Galileo Update - 10/01/92
Followup-To: sci.space
News-Software: VAX/VMS VNEWS 1.3-4   
Keywords:  Galileo, JPL
Reply-To: baalke@kelvin.jpl.nasa.gov
Organization: Jet Propulsion Laboratory
Date: Fri, 2 Oct 1992 06:17:40 GMT

Forwarded from Neal Ausman, Galileo Mission Director

                                 GALILEO
                     MISSION DIRECTOR STATUS REPORT
                               POST-LAUNCH
                     September 25 - October 1, 1992

SPACECRAFT

1.  On September 28, a NO-OP command was sent to reset the command loss timer
to 264 hours, its planned value for this mission phase.

2.  The AC/DC bus imbalance measurements exhibited some change.  The AC
measurement increased 2DN and reads 16 DN (3.7 volts).  The DC measurement
has ranged from 128 DN (15.0 volts) to 135 DN (15.8 volts) and now reads
134 DN (15.7 volts).  These measurement variations are consistent with the
model developed by the AC/DC special anomaly team.

3.  The Spacecraft status as of October 1, 1992, is as follows:

       a)  System Power Margin -  68 watts
       b)  Spin Configuration - Dual-Spin
       c)  Spin Rate/Sensor - 3.15rpm/Star Scanner
       d)  Spacecraft Attitude is approximately 4 degrees
           off-sun (leading) and 24 degrees off-earth (lagging)
       e)  Downlink telemetry rate/antenna-40 bps (coded)/LGA-1
       f)  General Thermal Control - all temperatures within
           acceptable range
       g)  RPM Tank Pressures - all within acceptable range
       h)  Orbiter Science- UVS, EUV, DDS, MAG, EPD, and HIC are
           powered on
       i)  Probe/RRH - powered off, temperatures within
           acceptable range
       j)  CMD Loss Timer Setting - 264 hours
           Time To Initiation - 192 hours


UPLINK GENERATION/COMMAND REVIEW AND APPROVAL:

1.  The EE-9 (Earth-Earth #9) final sequence and command generation package
was approved by the Project on September 29, 1992.  This sequence covers
spacecraft activities from November 23, 1992 to December 5, 1992.


TRAJECTORY

     As of noon Thursday, October 1, 1992, the Galileo Spacecraft trajectory
status was as follows:

	Distance from Earth         43,166,200 miles (.46 AU)
	Distance from Sun           129,476,400 miles (1.39 AU)
	Heliocentric Speed           59,800 miles per hour
	Distance from Jupiter        625,618,900 miles
	Round Trip Light Time        7 minutes, 50 seconds

SPECIAL TOPIC

1.  As of October 1, 1992, a total of 8231 real-time commands have been
transmitted to Galileo since Launch.  Of these, 3282  were pre-planned in
the sequence design and 4949 were not. In the past week, 1 real time command
was transmitted and pre-planned in the sequence design.  In addition, 5677
mini-sequence commands have been transmitted since March 1991; 3519 were
pre-planned and 2158 were not. In the past week, no mini-sequence commands
were transmitted.  Major command activities this week included commands to
reset the command loss timer.
     ___    _____     ___
    /_ /|  /____/ \  /_ /|     Ron Baalke         | baalke@kelvin.jpl.nasa.gov
    | | | |  __ \ /| | | |     Jet Propulsion Lab |
 ___| | | | |__) |/  | | |__   M/S 525-3684 Telos | Einstein's brain is stored
/___| | | |  ___/    | |/__ /| Pasadena, CA 91109 | in a mason jar in a lab
|_____|/  |_|/       |_____|/                     | in Wichita, Kansas.

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