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Magnetometer (MAG)
Galileo Orbiter Jupiter Raw Magnetometer Data readme.txt

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Brief Bundle Description                                                     
=============================================================================
                                                                             
This bundle includes raw magnetic field data acquired by the Galileo Orbiter 
magnetometer at Jupiter. The data set covers the time period from            
1995-11-06T00:21:30 UT (Jupiter approach) until the end of mission           
(March 2003). The raw magnetometer data set includes various forms of data:  
recorded high time resolution, real-time survey (RTS), optimal averager      
(opt/avg), snapshot, and the calibration parameters required to generate     
processed data products. In addition corrected rotor angles and spacecraft   
relative clock and cone angles are provided to simplify future calibration   
and reprocessing of the data.                                                
                                                                             
All data files are stored in the 'data' branch of the directory tree.        
Most data are stored in ASCII tables although some binary data may also be   
included. All files give time values in Spacecraft Event Time (SCET).        
Some files may give an additional time column that contains the Earth        
Received Time (ERT) in addition to the SCET.                                 
                                                                             
Users of these data are encouraged to acknowledge both the PDS and the       
principal investigators of the instruments whose data is used in analysis    
in all publications.                                                         
                                                                             
=============================================================================
Mission Facts                                                                
=============================================================================
                                                                             
The Galileo spacecraft and some science instruments were reprogrammed after  
arrival at Jupiter so that data acquisition and downlink could be achieved   
at the low bit rates associated with the mission after the high gain antenna 
(HGA) anomaly. New software was telemetered to the spacecraft in early May 1996 
in a period known as the 'Inflight Load' or IFL. The mission prior to the IFL
is known as the Phase 1 mission. After the IFL the mission is referred to as 
the Phase 2 mission. In Phase 1 raw data were provided to the instrument     
teams in Experiment Data Record (EDR) format. In Phase 2, the whole          
telemetry stream and ground data system were changed. The raw data were      
'packetized' and delivered electronically as packet files or instrument      
packet files (IPF). The difference between a packet file and an IPF is a     
single 44 byte header called an SFDU. The Io data stored on this bundle were 
acquired during Phase 1 and downlinked after the IFL by use of the new       
capabilities of the Phase 2 flight software. As such, they are a hybrid form 
of data that were acquired by using flight software that may differ from     
other files of the same raw data format. This is primarily of concern when   
instrument reprogramming has resulted in a change in the contents of the raw 
data (i.e. MAG).                                                             
                                                                             
The Galileo orbits were named by concatenating the first letter of the name  
of the primary target in each orbit with the orbit number. Thus, the fourth  
Jupiter orbit, in which Europa is the primary target, is called E4. The      
project defined orbits according to spacecraft command load boundaries rather
than the normal convention of apoapsis to apoapsis. The navigation team did  
not always adhere to this convention, causing some confusion. The PDS has    
organized the data and data delivery schedules around the project defined    
orbit boundaries. The following tables contain information about the orbital 
tour and satellite encounters:                                               
                                                                             
---------------------------------------------------------------------        
Galileo Orbit Information                                                    
---------------------------------------------------------------------        
Orbit  Orbit      ❮---  Periapsis Info   ----❯  ❮--  Apoapsis Info --❯       
 Num   Start      Periapsis       Range  Local  Apoapsis   Range Local       
       Date       Date/Time       ❮Rj**❯ Time   Date       ❮Rj❯  Time        
---------------------------------------------------------------------        
 J0    95-12-03   95-12-07 21:54   4.00  16:21  96-03-29  267.7  03:39       
 G1    96-06-23   96-06-28 00:31  11.03  15:36  96-08-09  125.3  03:24       
 G2    96-09-01   96-09-07 13:38  10.65  15:22  96-10-07  113.0  03:12       
 C3    96-11-02   96-11-06 13:31   9.21  15:34  96-11-27   89.1  03:28       
 E4    96-12-15   96-12-19 03:22   9.16  15:21  97-01-04   72.1  03:00       
 J5*   97-01-15   97-01-20 00:26   9.05  14:54  97-02-04   72.1  02:48       
 E6    97-02-16   97-02-20 20:55   9.12  14:28  97-03-14   89.2  02:20       
 G7    97-03-30   97-04-04 11:03   9.12  14:14  97-04-21   75.9  01:56       
 G8    97-05-04   97-05-08 11:42   9.27  13:29  97-06-02  100.2  01:21       
 C9    97-06-22   97-06-27 11:52  10.77  12:35  97-08-08  143.0  00:21       
C10    97-09-14   97-09-18 23:10   9.17  12:44  97-10-13   98.9  00:36       
E11    97-11-02   97-11-06 23:02   9.03  12:36  97-11-26   84.1  00:29       
E12    97-12-15   97-12-16 06:35   8.80  12:29  97-12-20   46.6  00:37       
J13*   98-02-09   98-02-10 23:09   8.85  12:33  98-03-06   95.2  00:25       
E14    98-03-28   98-03-29 07:59   8.83  12:17  98-04-30  199.7  00:16       
E15    98-05-30   98-06-01 02:34   8.85  12:12  98-06-26  100.4  00:03       
E16    98-07-20   98-07-20 17:18   9.93  11:54  98-08-23  124.4  23:51       
E17    98-09-25   98-09-26 08:26   8.91  11:44  98-10-24  110.4  23:34       
E18    98-11-21   98-11-22 03:57   9.23  11:24  98-12-27  129.0  23:17       
E19    99-01-31   99-02-01 02:38   9.24  10:56  99-03-18  154.3  22:40       
C20    99-05-02   99-05-03 17:00   9.37  10:24  99-06-02  114.5  21:46       
C21    99-06-29   99-07-02 05:04   7.27  10:04  99-07-22   89.0  21:57       
C22    99-08-11   99-08-12 10:58   7.32  09:50  99-08-29   77.1  21:23       
C23    99-09-13   99-09-14 19:57   6.55  09:17  99-09-27   65.7  20:46       
I24    99-10-10   99-10-11 03:31   5.68  08:41  99-11-01   97.7  20:47       
I25    99-11-25   99-11-26 23:30   5.94  08:39  99-12-15   87.2  20:28       
E26    00-01-01   00-01-04 03:33   5.78  08:14  00-01-28  102.7  20:05       
I27    00-02-20   00-02-22 12:30   5.85  07:56  00-04-06  154.4  19:55       
G28    00-05-17   00-05-21 04:52   6.68  07:18  00-09-08  289.9  18:37       
G29    00-12-27   00-12-29 03:26   7.49  06:03  01-03-11  216.3  17:37       
C30    01-05-07   01-05-23 17:33   7.28  05:11  01-06-29  136.8  16:27       
I31    01-08-04   01-08-06 04:52   5.93  04:14  01-09-10  132.2  16:05       
I32    01-10-14   01-10-15 23:56   5.78  03:53  01-12-01  160.7  15:39       
I33    02-01-16   02-01-17 16:23   5.54  03:13  02-06-13  348.1  14:21       
A34    02-11-04   02-11-05 07:23   1.99  01:40  03-04-14  336.7  12:49       
J35    03-09-21   03-09-21 18:     1.00                                      
                                                                             
  * Solar Conjunction - no data from this orbit                              
 ** Rj = 71492 km                                                            
                                                                             
------------------------------------------------------------                 
Satellite Flyby Characteristics*                                             
------------------------------------------------------------                 
                          Satellite Planetocentric Coords                    
                              Range     Lat    E Lon                         
Orb  Moon  C/A Time          (Rm**)    (deg)   (deg)    Note                 
------------------------------------------------------------                 
 0   IO    95-12-07 17:45:58  1.50     -9.6    258.9      W                  
24   IO    99-10-11 04:33:03  1.34      4.5    135.9      U                  
27   IO    00-02-22 13:46:41  1.11     18.5    157.4      U                  
31   IO    01-08-06 04:59:21  1.11     77.5    187.7      P                  
32   IO    01-10-16 01:23:21  1.10    -78.5    135.3      P                  
33   IO    02-01-17 14:08:28  1.06    -43.5     41.8      F                  
                                                                             
 4   EUR   96-12-19 06:52:58  1.45     -1.7    322.4      F                  
 6   EUR   97-02-20 17:06:10  1.38    -17.0     34.7      F                  
11   EUR   97-11-06 20:31:44  2.31     25.7    218.7      F                  
12   EUR   97-12-16 12:03:20  1.13     -8.7    134.4      U                  
14   EUR   98-03-29 13:21:05  2.06     12.2    131.2      U                  
15   EUR   98-05-31 21:12:57  2.62     15.0    225.4      W                  
19   EUR   99-02-01 02:19:50  1.93     30.5     28.1      U                  
26   EUR   00-01-03 17:59:43  1.22    -47.1     83.4      U                  
                                                                             
 1   GAN   96-06-27 06:29:07  1.32     30.4    246.7      W                  
 2   GAN   96-09-06 18:59:34  1.10     79.3    236.4      P                  
 7   GAN   97-04-05 07:09:58  2.18     55.8    270.4      W                  
 8   GAN   97-05-07 15:56:10  1.61     28.3     84.8      U                  
28   GAN   00-05-20 10:10:10  1.31    -19.0     92.4      U                  
29   GAN   00-12-28 08:25:27  1.89     62.2    269.0      P                  
                                                                             
 3   CALL  96-11-04 13:34:28  1.47     13.2    282.3      W                  
 9   CALL  97-06-25 13:47:50  1.17      2.0    101.0      U                  
10   CALL  97-09-17 00:18:55  1.22      4.6    281.3      W                  
30   CALL  01-05-25 11:23:58  1.06     13.6    254.6      W                  
                                                                             
34   AMA   02-11-05 06:18:40  2.89    -47.7     74.8      U                  
                                                                             
  *  Satellite encounters with recorded data only                            
     J2000 reference, body fixed spherical coordinates.                      
                                                                             
 **  Moon        Rm (km)                                                     
  =======================                                                    
     Amalthea      86.2                                                      
     Io          1818                                                        
     Europa      1560                                                        
     Ganymede    2634                                                        
     Callisto    2409                                                        
                                                                             
 Notes: Negative latitudes are southern hemisphere,                          
        U = upstream                                                         
        F = flank                                                            
        W = wake                                                             
        P = polar                                                            
                                                                             
                                                                             
=============================================================================
Bundle Format Information                                                    
=============================================================================
                                                                             
The bundle is organized into a hierarchical directory structure. It complies 
with both the Universal Disk Format (UDF) and the ISO 9660 (level 2) file    
system standards in order to accommodate users on a wide variety of          
platforms.                                                                   

===========================================================================  
Contacts                                                                     
===========================================================================  
                                                                             
The person most directly responsible for the construction and release of     
this bundle is Mr. Steven Joy. He was the PPI Node Data Administrator at the 
time this bundle was created and understands as much about the bundle        
structure and data organization as anyone. Other PPI personnel who may be    
aware of about issues related to this bundle include Joe Mafi, Bill Harris, William C. Aiken, 
and Dr. Raymond Walker, the PDS/PPI Node manager.                            
                                                                             
For questions or problems regarding this archive, please contact the PDS/PPI 
PDS operator:                                                                
                                                                             
  Email             pds_operator@igpp.ucla.edu                               
  Telephone         (310) 206-6073                                           
                                                             
For questions regarding PDS Standards or other archives available from the   
PDS, please contact PDS Operator at the PDS Central Node (at JPL):           
                                                                             
  Email             pds_operator@jpl.nasa.gov                                
  Telephone         (818) 354-4321                                           
                                                    
The PDS and the Planetary Plasma Interactions (PPI) Node in particular,      
assume no legal liability for errors on this bundle. All users are           
encouraged to verify the correctness of the data prior to submitting any     
publications or other work based on these data. Errors on this bundle should 
be reported back to the PPI Node of the PDS.