Example
Mercury   1998-18-Aug  12:34:56.7890 UTC   12 34 56.78901 -0.12345  -12 34 56.7890 -0.1234   999  Trans  J2000  C  E  JH  Repsold'che 188.8  19, 20, 21

Field             Fortran Format                      Units/Possible Values
Planet Name       A7,
                  3X,
Date              I4, '-', I2, '-', A3,               Year-Day-Month
                  2X,
Time              I2, ':', I2, ':', F7.4,             Hr:Min:Sec
                  1X,
Time scale        A3,                                 ET, UTC, or TT
                  3X,
R.A. and sigma    I2, 1X, I2, 1X, F8.5, 1X, F8.5,     Hr Min Sec Sec
                  2X,
dec. and sigma    A1, I2, 1X, I1, 1X, F7.4, 1X, F7.4, +/-Deg Min ArcSec Sec
                  3X,
Observatory       A4,
                  1X,
Instrument        A11,
                  1X,
Focal Length      F5.1,                              in cm.
                  2X,
Observation Type  A5,                                (Trans)it, (Micro)meter,
                                                     (Photo)graphic, or CCD
                  2X,
Coordinate Type   A5,                                (App)arent J2000, B1950, or
                                                     other epoch
                  2X,
Limb Observed     A2,                                (C)enter, (N)orth, (S)outh,
                                                     (E)ast, or (W)est
                  2X,                                  
Clamp Used        A1,                                (E)ast or (W)est
                  2X,
Obsvr's Initials  A2,
                  2X,
Reference         A10