Galileo PLS Jupter RTS Moments Derived readme.txt
Plasma Science Instrument
1996-06-25 to 2002-01-19
Planetary Plasma Interactions Discipline Node
of the
Planetary Data System
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Brief Bundle Description
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This bundle contains data from the Plasma Science instrument
(PLS) on the Galileo spacecraft for all Jupiter orbits. These data
have been reformatted into ASCII tables to facilitate data
processing and analysis.
All data files are stored in the 'data' branch of the directory tree. Most
data are stored in ASCII tables. 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.
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Mission Facts
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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:
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Galileo Orbit Information
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Orbit Orbit ❮--- Periapsis Info ----❯ ❮-- Apoapsis Info --❯
Num Start Periapsis Range Local Apoapsis Range Local
Date Date/Time ❮Rj**❯ Time Date ❮Rj❯ Time
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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
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Satellite Flyby Characteristics*
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Satellite Planetocentric Coords
Range Lat E Lon
Orb Moon C/A Time (Rm**) (deg) (deg) Note
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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
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Contacts
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For questions or problems regarding this archive, please contact the PDS/PPI
PDS operator:
Email pds_operator@igpp.ucla.edu
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
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 through the reporting
procedures described above.
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