PDS_VERSION_ID                   = PDS3
RECORD_TYPE                      = FIXED_LENGTH
RECORD_BYTES                     = 42
FILE_RECORDS                     = 618
^TABLE                           = "ATTITUDE.TAB"

DATA_SET_ID                      = "LP-L-ENG-6-ATTITUDE-V1.0"
SPACECRAFT_NAME                  = "LUNAR PROSPECTOR"
PRODUCT_ID                       = "LP_ATTITUDE_990908"
MISSION_PHASE_NAME               = "EXTENDED MISSION"
TARGET_NAME                      = MOON
START_TIME                       = 1998-01-07T04:00
STOP_TIME                        = 1999-05-31T12:00
PRODUCT_CREATION_TIME            = 1999-09-08

OBJECT                           = TABLE
  INTERCHANGE_FORMAT             = ASCII
  ROWS                           = 618
  ROW_BYTES                      = 42
  COLUMNS                        = 4
  DESCRIPTION                    = "This table contains values for the Lunar
    Prospector spin rate and spin axis orientation (attitude) as a function
    of time.  Orientation of the spin axis is measured relative to the
    Mean-of-2000 Ecliptic reference frame.  Values for spin rate and 
    orientation were derived from data obtained by Sun sensor and horizon 
    crossing indicator on the spacecraft.  Records are added to this file 
    following each significant change in either spin rate or spin axis 
    orientation.  The spin rate and attitude are orbit averages.  The
    instantaneous spin rate can be obtained from the sun pulse data set."

  OBJECT                         = COLUMN
    NAME                         = START_TIME
    DATA_TYPE                    = TIME
    START_BYTE                   = 1
    BYTES                        = 16
    DESCRIPTION                  = "Start_time is UTC date and time of
      the beginning of a period over which neither spin rate nor spin
      axis orientation change significantly.  Format is yyyy-mm-ddThh:mm."
  END_OBJECT                     = COLUMN

  OBJECT                         = COLUMN
    NAME                         = SPIN_RATE
    DATA_TYPE                    = ASCII_REAL
    START_BYTE                   = 18
    BYTES                        = 7
    FORMAT                       = "F7.3"
    UNIT                         = RPM
    DESCRIPTION                  = "Orbit-average rate of spin for the 
      spacecraft, measured in revolutions per minute (rpm).  During eclipse 
      season the instantaneous spin rate may differ from the mean spin 
      rate by up to 0.01 rpm as spacecraft passes into and out of the 
      moon shadow."
  END_OBJECT                     = COLUMN

  OBJECT                         = COLUMN
    NAME                         = RIGHT_ASCENSION
    DATA_TYPE                    = ASCII_REAL
    START_BYTE                   = 26
    BYTES                        = 7
    FORMAT                       = "F7.2"
    UNIT                         = DEGREES
    DESCRIPTION                  = "Right_ascension is used to fix the 
      position of the spacecraft spin axis.  It is defined as the arc from
      line of Aries at Epoch 2000.  See figure 2 of LVL0SIS.PDF."
  END_OBJECT                     = COLUMN

  OBJECT                         = COLUMN
    NAME                         = DECLINATION
    DATA_TYPE                    = ASCII_REAL
    START_BYTE                   = 34
    BYTES                        = 7
    FORMAT                       = "F7.2"
    UNIT                         = DEGREES
    DESCRIPTION                  = "Declination is an angle, 
      corresponding to latitude, used to fix position of the spacecraft
      spin axis.  It is measured positive north and negative south of
      celestial equator at Epoch 2000.  See figure 2 of LVL0SIS.PDF."
  END_OBJECT                     = COLUMN
END_OBJECT                       = TABLE
END