XMM-Newton Science Analysis System


barycen (barycen-1.22.1) [xmmsas_20230412_1735-21.0.0]

Algorithm

   subroutine barycen

      check if barycentering has been applied already - if yes, exit

      locate ODF orbit file
      locate earth ephemeris file

      foreach row in table
          compute TBD from time value of current row
      end

      update timing related attributes

      foreach GTI extension
         forach row in GTI table
            compute TBD of START and STOP time
         end
      end

   end subroutine barycen