PDS_VERSION_ID = PDS3
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 82
FILE_RECORDS = 12074
^FILE_ID_TABLE = ("CRS009AA.CRS",1)
^REFERENCE_TABLE = ("CRS009AA.CRS",2)
^BODIES_TABLE = ("CRS009AA.CRS",3)
^DATA_TABLE = ("CRS009AA.CRS",15)
INSTRUMENT_HOST_NAME = "VOYAGER 1"
TARGET_NAME = "TITAN"
INSTRUMENT_NAME = "RADIO SCIENCE SUBSYSTEM"
DATA_SET_ID = "VG1-SSA-RSS-1-ROCC-V1.0"
OBSERVATION_TYPE = "RADIO OCCULTATION"
ORIGINAL_PRODUCT_ID = "UNK"
PRODUCT_ID = "CRS009AA.CRS"
DESCRIPTION = "This file contains spacecraft
trajectory information in the CRS (Celestial Reference Set) format.
The file consists of four ASCII tables: short tables identifying
the file, the time and coordinate reference frames, and the bodies
included in the file; and a set of state vectors (position and
velocity) for the bodies with respect to the spacecraft. Data
are stored in the form of card images plus delimiters (82-byte
records in which an ASCII carriage-return and ASCII line-feed
are in bytes 81 and 82, respectively). On some systems the
delimiters may need to be modified before the file can be used."
START_TIME = 1980-11-12T04:47:00
STOP_TIME = 1980-11-12T08:30:00
PRODUCT_CREATION_TIME = 1998-07-28T00:00:00
PRODUCER_FULL_NAME = "VOYAGER NAVIGATION TEAM"
PRODUCER_INSTITUTION_NAME = "JET PROPULSION LABORATORY"
PRODUCT_VERSION_TYPE = "FINAL"
PRODUCER_ID = "VGR NAV"
SOFTWARE_NAME = "UNK"
/* Structure Objects */
OBJECT = FILE_ID_TABLE
ROWS = 1
COLUMNS = 8
ROW_BYTES = 82
INTERCHANGE_FORMAT = ASCII
DESCRIPTION = "The File ID Table identifies and
describes the file. The table has one row of 82 bytes, the last
two of which are the ASCII carriage-return line-feed pair.
Except for columns 4-6, there are no delimiters between columns.
Character fields are NOT set off by quotes. Entries in all
fields are left justified."
OBJECT = COLUMN
NAME = "NRECS"
COLUMN_NUMBER = 1
DATA_TYPE = ASCII_INTEGER
START_BYTE = 1
BYTES = 10
FORMAT = "I10"
UNIT = "N/A"
DESCRIPTION = "The number of time-tagged
vector sets in the file."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "SCID"
COLUMN_NUMBER = 2
DATA_TYPE = ASCII_INTEGER
START_BYTE = 11
BYTES = 10
FORMAT = "I10"
UNIT = "N/A"
DESCRIPTION = "The spacecraft identification
number (e.g., 31 for Voyager 1,
77 for Galileo Orbiter)."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "NBODIS"
COLUMN_NUMBER = 3
DATA_TYPE = ASCII_INTEGER
START_BYTE = 21
BYTES = 10
FORMAT = "I10"
UNIT = "N/A"
DESCRIPTION = "Number of bodies in the
file."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "CRDATE - MONTH"
COLUMN_NUMBER = 4
DATA_TYPE = ASCII_INTEGER
START_BYTE = 33
BYTES = 2
FORMAT = "I2"
UNIT = "N/A"
DESCRIPTION = "The month in which the file
was created."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "CRDATE - DAY"
COLUMN_NUMBER = 5
DATA_TYPE = ASCII_INTEGER
START_BYTE = 36
BYTES = 2
FORMAT = "I2"
UNIT = "N/A"
DESCRIPTION = "The day of month on which
the file was created."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "CRDATE - YEAR"
COLUMN_NUMBER = 6
DATA_TYPE = ASCII_INTEGER
START_BYTE = 39
BYTES = 2
FORMAT = "I2"
UNIT = "N/A"
DESCRIPTION = "The two-digit year in which
the file was created."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "NAV TEAM FILE ID"
COLUMN_NUMBER = 7
DATA_TYPE = CHARACTER
START_BYTE = 43
BYTES = 8
FORMAT = "A8"
UNIT = "N/A"
DESCRIPTION = "The ID for this file assigned
by the Project Navigation Team."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "SOURCE P-FILE"
COLUMN_NUMBER = 8
DATA_TYPE = CHARACTER
START_BYTE = 53
BYTES = 8
FORMAT = "A8"
UNIT = "N/A"
DESCRIPTION = "The ID for the source P-file
assigned by the Project
Navigation Team."
END_OBJECT = COLUMN
END_OBJECT = FILE_ID_TABLE
OBJECT = REFERENCE_TABLE
ROWS = 1
COLUMNS = 2
ROW_BYTES = 82
INTERCHANGE_FORMAT = ASCII
DESCRIPTION = "The Reference Table defines the
coordinate system and the time reference. It has one row of 82
bytes, the last two of which are the ASCII carriage-return line-
feed pair. There are no delimiters between columns. Character
fields are NOT set off by quotes. Entries in all fields are
left justified."
OBJECT = COLUMN
NAME = "COORDINATE SYSTEM"
COLUMN_NUMBER = 1
DATA_TYPE = CHARACTER
START_BYTE = 1
BYTES = 38
FORMAT = "A38"
UNIT = "N/A"
DESCRIPTION = "The coordinate system for
the vectors in the file."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "ETMUTC"
COLUMN_NUMBER = 2
DATA_TYPE = ASCII_REAL
START_BYTE = 39
BYTES = 26
FORMAT = "E26.18"
UNIT = "SECOND"
DESCRIPTION = "Ephemeris Time minus UTC in
seconds."
END_OBJECT = COLUMN
END_OBJECT = REFERENCE_TABLE
OBJECT = BODIES_TABLE
ROWS = 4
COLUMNS = 10
ROW_BYTES = 246
INTERCHANGE_FORMAT = ASCII
DESCRIPTION = "The Bodies Table identifies the
planetary bodies for which vectors are provided in the Data
Table. 80-byte card images are delimited by ASCII carriage-
return line-feed pairs. Each 246-byte row in the Bodies Table
describes one body -- its GM, radii, gravitational field
coefficients, and its pole vector. There are no delimiters
between columns. Character fields are NOT set off by quotes.
Entries in all fields are left justified."
OBJECT = COLUMN
NAME = "BODY NAME"
COLUMN_NUMBER = 1
DATA_TYPE = CHARACTER
START_BYTE = 17
BYTES = 6
FORMAT = "A6"
UNIT = "N/A"
DESCRIPTION = "The name of the body,
abbreviated to 6 characters,
if necessary."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "GM"
COLUMN_NUMBER = 2
DATA_TYPE = ASCII_REAL
START_BYTE = 23
BYTES = 26
FORMAT = "E26.18"
UNIT = "KM**3/S**2/KG**2"
DESCRIPTION = "Gravitational constant for
the body. Set to zero if
unknown or not available."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "REQ"
COLUMN_NUMBER = 3
DATA_TYPE = ASCII_REAL
START_BYTE = 49
BYTES = 16
FORMAT = "E16.8"
UNIT = "KILOMETER"
DESCRIPTION = "Mean equatorial radius for
the oblate spheroid model
of the body. Set to zero if
unknown or not available."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "RPOL"
COLUMN_NUMBER = 4
DATA_TYPE = ASCII_REAL
START_BYTE = 65
BYTES = 16
FORMAT = "E16.8"
UNIT = "KILOMETER"
DESCRIPTION = "Polar radius for the oblate
spheroid model of the body.
Set to zero if unknown or
not available."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "RREF"
COLUMN_NUMBER = 5
DATA_TYPE = ASCII_REAL
START_BYTE = 83
BYTES = 16
FORMAT = "E16.8"
UNIT = "KILOMETER"
DESCRIPTION = "Reference radius for gravity
field coefficients. Set to zero
if unknown or not available."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "J2"
COLUMN_NUMBER = 6
DATA_TYPE = ASCII_REAL
START_BYTE = 99
BYTES = 16
FORMAT = "E16.8"
UNIT = "N/A"
DESCRIPTION = "J2 coefficient for the gravity
field. Set to zero if unknown
or not available."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "J4"
COLUMN_NUMBER = 7
DATA_TYPE = ASCII_REAL
START_BYTE = 115
BYTES = 16
FORMAT = "E16.8"
UNIT = "N/A"
DESCRIPTION = "J4 coefficient for the gravity
field. Set to zero if unknown
or not available."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "J6"
COLUMN_NUMBER = 8
DATA_TYPE = ASCII_REAL
START_BYTE = 131
BYTES = 16
FORMAT = "E16.8"
UNIT = "N/A"
DESCRIPTION = "J6 coefficient for the gravity
field. Set to zero if unknown
or not available."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "J8"
COLUMN_NUMBER = 9
DATA_TYPE = ASCII_REAL
START_BYTE = 147
BYTES = 16
FORMAT = "E16.8"
UNIT = "N/A"
DESCRIPTION = "J8 coefficient for the gravity
field. Set to zero if unknown
or not available."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "NPOLE"
COLUMN_NUMBER = 10
DATA_TYPE = ASCII_REAL
START_BYTE = 165
BYTES = 78
ITEMS = 3
ITEM_BYTES = 26
FORMAT = "E26.18"
UNIT = "N/A"
DESCRIPTION = "Unit vector indicating
rotational north pole of
the body. Set to zero if
unknown or not available."
END_OBJECT = COLUMN
END_OBJECT = BODIES_TABLE
OBJECT = DATA_TABLE
ROWS = 1340
COLUMNS = 6
ROW_BYTES = 738
INTERCHANGE_FORMAT = ASCII
DESCRIPTION = "The Data Table contains the state
vectors for each body with respect to the spacecraft. The
first six columns give the date and time of the vector set; the
seventh column contains repeating 6-element vectors for each
body. The first 3 elements give xyz position of Body 1 with
respect to the spacecraft, the second 3 elements give its
velocity, the third 3 elements give the xyz position of Body 2,
etc. Data are represented as 80-byte card images, followed by
ASCII carriage-return line-feed pairs. Except for those,
there are no delimiters between columns or items."
OBJECT = COLUMN
NAME = "ET-YEAR"
COLUMN_NUMBER = 1
DATA_TYPE = ASCII_INTEGER
START_BYTE = 1
BYTES = 4
FORMAT = "I4"
UNIT = "YEAR"
DESCRIPTION = "The Ephemeris Time 4-digit
year at which the vector set
is valid."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "ET-DOY"
COLUMN_NUMBER = 2
DATA_TYPE = ASCII_INTEGER
START_BYTE = 5
BYTES = 4
FORMAT = "I4"
UNIT = "DAY"
DESCRIPTION = "The Ephemeris Time 3-digit
day-of-year at which the
vector set is valid."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "ET-HR"
COLUMN_NUMBER = 3
DATA_TYPE = ASCII_INTEGER
START_BYTE = 9
BYTES = 3
FORMAT = "I3"
UNIT = "HOUR"
DESCRIPTION = "The Ephemeris Time 2-digit
hour at which the vector set
is valid."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "ET-MIN"
COLUMN_NUMBER = 4
DATA_TYPE = ASCII_INTEGER
START_BYTE = 12
BYTES = 3
FORMAT = "I3"
UNIT = "MINUTE"
DESCRIPTION = "The Ephemeris Time 2-digit
minute at which the vector
set is valid."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "ET-SEC"
COLUMN_NUMBER = 5
DATA_TYPE = ASCII_REAL
START_BYTE = 15
BYTES = 8
FORMAT = "F8.4"
UNIT = "SECOND"
DESCRIPTION = "The Ephemeris Time second
(and fraction) at which the
vector set is valid."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "ETSP50"
COLUMN_NUMBER = 6
DATA_TYPE = ASCII_REAL
START_BYTE = 23
BYTES = 26
FORMAT = "E26.18"
UNIT = "SECOND"
DESCRIPTION = "The Ephemeris Time seconds
past 0h 1 January 1950."
END_OBJECT = COLUMN
OBJECT = CONTAINER
NAME = "VECTORS"
START_BYTE = 83
BYTES = 656
REPETITIONS = 4
DESCRIPTION = "This container holds one
6-element state vector for each of the bodies defined in
the Bodies Table. Each state vector gives x, y, and z
position of the body with respect to the spacecraft and
Vx, Vy, and Vz velocity of the body with respect to the
spacecraft at the time given in Columns 1-6."
OBJECT = COLUMN
NAME = "X"
DATA_TYPE = ASCII_REAL
START_BYTE = 1
BYTES = 26
FORMAT = "E26.18"
UNIT = "KILOMETER"
DESCRIPTION = "The X position of Body N."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "Y"
DATA_TYPE = ASCII_REAL
START_BYTE = 27
BYTES = 26
FORMAT = "E26.18"
UNIT = "KILOMETER"
DESCRIPTION = "The Y position of Body N."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "Z"
DATA_TYPE = ASCII_REAL
START_BYTE = 53
BYTES = 26
FORMAT = "E26.18"
UNIT = "KILOMETER"
DESCRIPTION = "The Z position of Body N."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "SPARE1"
DATA_TYPE = CHARACTER
START_BYTE = 79
BYTES = 4
FORMAT = "N/A"
UNIT = "N/A"
DESCRIPTION = "Two unassigned bytes plus
an ASCII carriage-return
line-feed pair"
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "VX"
DATA_TYPE = ASCII_REAL
START_BYTE = 83
BYTES = 26
FORMAT = "E26.18"
UNIT = "KILOMETER PER SECOND"
DESCRIPTION = "The X velocity of Body N."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "VY"
DATA_TYPE = ASCII_REAL
START_BYTE = 109
BYTES = 26
FORMAT = "E26.18"
UNIT = "KILOMETER PER SECOND"
DESCRIPTION = "The Y velocity of Body N."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "VZ"
DATA_TYPE = ASCII_REAL
START_BYTE = 135
BYTES = 26
FORMAT = "E26.18"
UNIT = "KILOMETER PER SECOND"
DESCRIPTION = "The Z velocity of Body N."
END_OBJECT = COLUMN
OBJECT = COLUMN
NAME = "SPARE2"
DATA_TYPE = CHARACTER
START_BYTE = 161
BYTES = 4
FORMAT = "N/A"
UNIT = "N/A"
DESCRIPTION = "Two unassigned bytes plus
an ASCII carriage-return
line-feed pair"
END_OBJECT = COLUMN
END_OBJECT = CONTAINER
END_OBJECT = DATA_TABLE
END
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