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  1. GMAT
  2. GMT-2454

Conversion errors for AOP and TA

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      Description

      I am using the September 16 build of GMAT.

      To duplicate this bug, open GMAT and open the DefaultSC. With the Cartesian state type, enter the following state:
      X Y Z VX VY
      -5975.575286 480.1471983 -3416.424837 3.800269068 0.916073412

      VZ
      -6.518201013

      Then select the state type to be Keplerian. The state should change to:
      SMA ECC INC RAAN AOP TA
      6900 0 98 360 0 210

      But it changes to:
      SMA ECC INC RAAN AOP TA
      6900 0 98 0 248.7517740275628 321.2482259726179

      Now change the state type to Modified Keplerian and the state should change to:
      RadPer RadApo INC RAAN AOP TA
      6900 6900 98 360 0 210

      But it changes to:
      RadPer RadApo INC RAAN AOP TA
      6900 6900 98 0 248.7517740275628 321.2482259726179

      AOP and TA are way off from the expected value. The conversion algorithm probably has an error in it somewhere.

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                • Created:
                  Updated:
                  Resolved: