Export Format for Minor-Planet Orbits

The column headed `F77' indicates the Fortran 77 format specifier that should be used to read the specified value.

   Columns   F77    Use

    1 -   7  a7     Number or provisional designation
                      (in packed form)
    9 -  13  f5.2   Absolute magnitude, H
   15 -  19  f5.2   Slope parameter, G

   21 -  25  a5     Epoch (in packed form, .0 TT)
   27 -  35  f9.5   Mean anomaly at the epoch, in degrees

   38 -  46  f9.5   Argument of perihelion, J2000.0 (degrees)
   49 -  57  f9.5   Longitude of the ascending node, J2000.0
                      (degrees)
   60 -  68  f9.5   Inclination to the ecliptic, J2000.0 (degrees)

   71 -  79  f9.7   Orbital eccentricity
   81 -  91  f11.8  Mean daily motion (degrees per day)
   93 - 103  f11.7  Semimajor axis (AU)

  106        i1     Uncertainty parameter, U
                    If this column contains `E' it indicates
                    that the orbital eccentricity was assumed.
                    For one-opposition orbits this column can
                    also contain `D' if a double (or multiple)
                    designation is involved or `F' if an e-assumed
                    double (or multiple) designation is involved.

  108 - 116  a10    Reference
  118 - 122  i5     Number of observations
  124 - 126  i3     Number of oppositions

     For multiple-opposition orbits:
     128 - 131  i4     Year of first observation
     132        a1     '-'
     133 - 136  i4     Year of last observation

     For single-opposition orbits:
     128 - 131  i4     Arc length (days)
     133 - 136  a4     'days'

  138 - 141  f4.2   r.m.s residual (")
  143 - 145  a3     Coarse indicator of perturbers
                    (blank if unperturbed one-opposition object)
  147 - 149  a3     Precise indicator of perturbers
                    (blank if unperturbed one-opposition object)
  151 - 160  a10    Computer name

There may sometimes be additional information beyond column 160
as follows:

  162 - 165  z4.4   4-hexdigit flags
                    The bottom 6 bits are used to encode a
                    value representing the orbit type (other
                    values are undefined):

                      Value
                        2  Aten
                        3  Apollo
                        4  Amor
                        5  Object with q < 1.381 AU
                        6  Object with q < 1.523 AU
                        7  Object with q < 1.665 AU
                        8  Hilda
                        9  Jupiter Trojan
                       10  Centaur
                       14  Plutino
                       15  Other resonant TNO
                       16  Cubewano
                       17  Scattered disk

                    Additional information is conveyed by
                    adding in the following bit values:

                       64  Unused
                      128  Unused
                      256  Unused
                      512  Unused
                     1024  Unused
                     2048  Unused
                     4096  Unused
                     8192  1-opposition object seen at
                           earlier opposition
                    16384  Critical list numbered object
                    32768  Object is PHA

  167 - 194  a      Readable designation

  195 - 202  i8     Date of last observation included in
                      orbit solution (YYYYMMDD format)

MPC