Voyager In Space

 

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VOYAGER

Voyager LECP Data Analysis Handbook

 

Data File Descriptions

 

Super Average Tape Record Description

 

Block 1: Headers [HEAD(100)]

 

ITEM NAME TYPE DESCRIPTION
1 SCID I*2 SPACECRAFT IDENTIFICATION AND MODE; LEFT BYTE IS S/C ID: 0=VGR 2,1=VGR 1; RIGHT BYTE IS MODE(HEX): 1=CR1(7), 2=CR2(1), 3=CR3(2), 4=CR4(3),5=CR5(4), 6=CR6(5), 7=CR7(6), 8=NE(8), 9=GS3(10), 10=CR5A(24, 29)
2 SCNDIR I*2 SCAN DIRECTION 1=INCR., -1=DECR , 0=PARK
3 ST01 I*2 FIRST OCCURRENCE OF STATUS WORD 1*
4 ST01 I*2 LAST OCCURRENCE OF STATUS WORD 1
5 ST02 I*2 FIRST OCCURRENCE OF STATUS WORD 2
6 ST02 I*2 LAST OCCURRENCE OF STATUS WORD 2
7 ST03 I*2 FIRST OCCURRENCE OF STATUS WORD 3
8 ST03 I*2 LAST OCCURRENCE OF STATUS WORD 3
9 ST04 I*2 FIRST OCCURRENCE OF STATUS WORD 4
10 ST04 I*2 LAST OCCURRENCE OF STATUS WORD 4
11 ST05 I*2 FIRST OCCURRENCE OF STATUS WORD 5
12 ST05 I*2 LAST OCCURRENCE OF STATUS WORD 5
13 ST06 I*2 FIRST OCCURRENCE OF STATUS WORD 6
14 ST06 I*2 LAST OCCURRENCE OF STATUS WORD 6
15 MPOS I*2 MOTOR POSITION(0,1,2,3,4,5,6,7)
16 TTEMP I*2 TEL. TEMP, (128*CENT. DEG)(-9999 IF UNK.)
17 LOGT I*2 LOG AMP. TEMP. (128* CENT.DEG.)
18 TIMUNT I*2 BASIC ACCUM. TIME UNIT IN SECONDS FROM MRT
19 NGRP I*2 NUMBER OF RATE GROUPS IN THIS FORMAT
20 G18 I*2 GROUP 18 I.D./SC EVENT TIME FLAG
21 ALTFLG I*2 FLAG FOR THE GS3 50-50 MODE 0=LEPT, 1=LEMPA
22 DATE A*2 FIRST TWO CHARACTERS OF PRODUCTION DATE
23 DATE A*2 THIRD AND FOURTH CHARACTERS OF PRODUCTION DATE
24 DATE A*2 FIFTH AND SIXTH CHARACTERS OF PRODUCTION DATE
25 DATE A*2 SEVENTH AND EIGHTH CHARACTERS OF PRODUCTION DATE
26 DATE A*2 NINTH AND TENTH CHARACTERS OF PRODUCTION DATE
27 DATE A*2 ELEVENTH AND TWELFTH CHARACTERS OF PRODUCTION DATE
28 RATE I*2 STEPPING RATE, SECONDS.
29 SPARE    
30 ADFL I*2 FLAG=1 FOR DEAD TIME CORR.APPLIED (ALPHA)
31 BDFL I*2 FLAG=1 FOR DEAD TIME CORR.APPLIED (BETA)
32 ADVR A*2 DEAD TIME VERSION USED (ALPHA)
33 BDVR A*2 DEAD TIME VERSION USED (BETA)
34 SPARE    
35 SECST I*2 16*AVG BEGIN TIME IN SECONDS
36 SECSP I*2 16*AVG END TIME IN SECONDS
37 M60F I*2 VALUE OF MOD 60 AT FIRST APPEARANCE
38 M60L I*2 VALUE OF MOD 60 AT LAST APPEARANCE
39 M16F I*2 VALUE OF MOD 2**16 AT FIRST APPEARANCE
40 M16L I*2 VALUE OF MOD 2**16 AT LAST APPEARANCE
41 SCETHS I*2 SPACECRAFT EVENT TIME HOUR AT START
42 SCETHE I*2 SPACECRAFT EVENT TIME HOUR AT END
43 SCETSS I*2 SPACECRAFT EVENT TIME SECOND AT START
44 SCETSE I*2 SPACECRAFT EVENT TIME SECOND AT END
45 SCETMS I*2 SPACECRAFT EVENT TIME MILLISECOND START
46 SCETME I*2 SPACECRAFT EVENT TIME MILLISECOND END
47 SCETYS I*2 SPACECRAFT EVENT TIME YEAR AT START
48 SCETYE I*2 SPACECRAFT EVENT TIME YEAR AT END
49 WYEAR I*2 AVG. WINDOW YEAR IF APPLICABLE.
50 WDAY I*2 AVG. WINDOW DAY IF APPLICABLE.
51 WHR I*2 AVG. WINDOW HOUR IF APPLICABLE.
52 WSEC I*2 AVG. WINDOW SECONDS IF APPLICABLE.
53 WINC I*2 100. AVG DURATION IN HOURS.

The following items, 54-65 and 70-72, are trajectory data which have different definitions for Cruise, Jupiter, Saturn, Uranus, and Neptune. In general, the coordinate for satellites is planet centered, planet mean orbit, and prime meridian in sun direction. However, the coordinate for sun is planet centered, Earth mean ecliptic and equinox of 1950.0 (ECL50). Satellite 1 means Io, Titan, Mimas, and Triton at near encounter of planet Jupiter, Saturn, Uranus, and Neptune, respectively. Similarly, satellite 2 means Europa, Rhea, Ariel, and 1989N1, satellite 3 means Ganymede, Dione, Umbriel, and 1989N2, and satellite 4 means Callisto, Mimas, Titania, and 1989N3, respectively.
54 SUNX I*2 X COORDINATE OF SUN, UNITS OF 0.01 AU
55 SUNY I*2 Y COORDINATE OF SUN, UNITS OF 0.01 AU
56 SUNZ I*2 Z COORDINATE OF SUN, UNITS OF 0.01 AU
57 SAT1X I*2 X COORDINATE OF SATELLITE 1, UNITS OF 0.01 RP
58 SAT1Y I*2 Y COORDINATE OF SATELLITE 1, UNITS OF 0.01 RP
59 SAT1Z I*2 Z COORDINATE OF SATELLITE 1, UNITS OF 0.01 RP
60 SAT2X I*2 X COORDINATE OF SATELLITE 2, UNITS OF 0.01 RP
61 SAT2Y I*2 Y COORDINATE OF SATELLITE 2, UNITS OF 0.01 RP
62 SAT2Z I*2 Z COORDINATE OF SATELLITE 2, UNITS OF 0.01 RP
63 SAT3X I*2 X COORDINATE OF SATELLITE 3, UNITS OF 0.01 RP
64 SAT3Y I*2 Y COORDINATE OF SATELLITE 3, UNITS OF 0.01 RP
65 SAT3Z I*2 Z COORDINATE OF SATELLITE 3, UNITS OF 0.01 RP
66 NAMEIN A*2 1ST & 2ND CHAR. OF INPUT FILENAME
67 NAMEIN A*2 3RD & 4TH CHAR. OF INPUT FILENAME
68 NAMEIN A*2 5TH & 6TH CHAR. OF INPUT FILENAME
69 NAMEIN A*2 7TH & 8TH CHAR. OF INPUT FILENAME.
70 SAT4X I*2 X COORDINATE OF SATELLITE 4, UNITS OF 0.01 RP
71 SAT4Y I*2 Y COORDINATE OF SATELLITE 4, UNITS OF 0.01 RP
72 SAT4Z I*2 Z COORDINATE OF SATELLITE 4, UNITS OF 0.01 RP

ITEMS 73-95 ARE INFORMATION ON PLANETOCENTRIC MAGNETIC DIPOLE FIELD, AS WELL AS DETECTOR'S PITCH ANGLES AT 8 SCANNING SECTORS. PARTICULARLY, ITEMS 88-95 ARE AVAILABLE ONLY AT THE NEAR ENCOUNTER MODE, FOR EβCHANNELS.
      CRUISE (PHASE_FLAG ODD) ENCOUNTER (PHASE_FLAG EVEN)
73 RANGE I*2 HELIOCENTRIC RADIAL DISTANCE OF S/C, UNITS OF 0.01 AU PLANETOCENTRIC RADIAL DISTANCE OF S/C, UNITS OF 0.01 RP
74 MAGLAT I*2 HELIOCENTRIC  LATITUDE OF S/C, IN UNITS OF 0.1 DEGREES CENTERED MAGNETIC DIPOLE LATITUDE AT S/C, UNITS  0.01 DEGREE
75 MAGLON I*2 HELIOCENTRIC LONGITUDE OF S/C, IN UNITS OF 0.01 DEGREES CENTERED MAGNETIC DIPOLE LONGITUDE AT S/C, UNITS 0.01 DEGREE
76 BSTNX I*2 MAGNETIC FIELD X-COMPONENT AT S/C, IN 0.01 GAMMA
77 BSTNY I*2 MAGNETIC FIELD Y-COMPONENT AT S/C, IN 0.01 GAMMA
78 BSTNZ I*2 MAGNETIC FIELD Z-COMPONENT AT S/C, IN 0.01 GAMMA
      IF BY=BZ=32767 THEN BX IS THE MAGNITUDE OF THE FIELD
79 LVAL I*2 PLANETARY MAGNETIC FIELD L VALUE OF S/C, UNITS OF 0.01 RP
80 PITCH1 I*2 SECTOR 1 PITCH ANGLE, IN UNITS OF 0.01 DEGREES
81 PITCH2 I*2 SECTOR 2 PITCH ANGLE, IN UNITS OF 0.01 DEGREES
82 PITCH3 I*2 SECTOR 3 PITCH ANGLE, IN UNITS OF 0.01 DEGREES
83 PITCH4 I*2 SECTOR 4 PITCH ANGLE, IN UNITS OF 0.01 DEGREES
84 PITCH5 I*2 SECTOR 5 PITCH ANGLE, IN UNITS OF 0.01 DEGREES
85 PITCH6 I*2 SECTOR 6 PITCH ANGLE, IN UNITS OF 0.01 DEGREES
86 PITCH7 I*2 SECTOR 7 PITCH ANGLE, IN UNITS OF 0.01 DEGREES
87 PITCH8 I*2 SECTOR 8 PITCH ANGLE, IN UNITS OF 0.01 DEGREES
88 PITCH1P I*2 SECTOR 1 OF Eβ PITCH ANGLE, IN UNITS OF 0.01 DEGREES
89 PITCH2P I*2 SECTOR 2 OF Eβ PITCH ANGLE, IN UNITS OF 0.01 DEGREES
90 PITCH3P I*2 SECTOR 3 OF Eβ PITCH ANGLE, IN UNITS OF 0.01 DEGREES
91 PITCH4P I*2 SECTOR 4 OF Eβ PITCH ANGLE, IN UNITS OF 0.01 DEGREES
92 PITCH5P I*2 SECTOR 5 OF Eβ PITCH ANGLE, IN UNITS OF 0.01 DEGREES
93 PITCH6P I*2 SECTOR 6 OF Eβ PITCH ANGLE, IN UNITS OF 0.01 DEGREES
94 PITCH7P I*2 SECTOR 7 OF Eβ PITCH ANGLE, IN UNITS OF 0.01 DEGREES
95 PITCH8P I*2 SECTOR 8 OF Eβ PITCH ANGLE, IN UNITS OF 0.01 DEGREES
     
96 NAMEOUT A*2 FIRST & SECOND CHARACTERS OF OUTPUT FILENAME
97 NAMEOUT A*2 THIRD & FOURTH CHARACTERS OF OUTPUT FILENAME
98 NAMEOUT A*2 FIFTH & SIXTH CHARACTERS OF OUTPUT FILENAME
99 NAMEOUT A*2 SEVENTH & EIGHTH CHARACTERS OF OUTPUT FILENAME
100 PHASE_FLAG I*2
0=no data present
1=Earth-Jupiter Cruise
2=Jupiter Encounter
3=Jupiter-Saturn Cruise
4=Saturn Encounter
5=Post-Saturn Cruise
6=Uranus Encounter
7=Uranus-Neptune Cruise
8=Neptune Encounter
9=Post Neptune Cruise

 

*See details in Appendix A.

 

Block 2

 

 

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Updated 8/9/19, Cameron Crane

VOYAGER 1 ELAPSED TIME

--:--:--:--
Days: Hours: Minutes: Seconds

*Since official launch
September 5, 1977, 12:56:00:00 UTC

VOYAGER 2 ELAPSED TIME

--:--:--:--
Days: Hours: Minutes: Seconds

*Since official launch
August 20, 1977, 14:29:00:00 UTC

QUICK FACTS

Manufacturer: Voyagers 1 and 2 were built in the Jet Propulsion Laboratory in Southern California.

Mission Duration: 40+ years have elapsed for both Voyager 1 and Voyager 2 (both are ongoing).

Destination: Their original destinations were Saturn and Jupiter. Their current destination is interstellar space.