Hello,

I have an exception when trying to use PropagatorParallelizer with DSST “osculating” propagators. The exception is raised when it tries to interpolate the state: the interpolation is impossible with osculating states. I think it’s because the RK polynomials are not available with the osculating state and only with the mean state.

With only the mean state, it works well (direct interpolation of the propagated state, like for the numerical propagation) but it raises an exception if we request a propagation with an output defined as “osculating”.

Maybe it’s a known behavior in this special case but I’d like to report it.

Exception in thread “main” org.hipparchus.exception.MathIllegalArgumentException: échantillon d’interpolation vide

at org.hipparchus.analysis.interpolation.HermiteInterpolator.checkInterpolation(HermiteInterpolator.java:304)

at org.hipparchus.analysis.interpolation.HermiteInterpolator.value(HermiteInterpolator.java:178)

at org.orekit.propagation.semianalytical.dsst.utilities.ShortPeriodicsInterpolatedCoefficient.value(ShortPeriodicsInterpolatedCoefficient.java:76)

at org.orekit.propagation.semianalytical.dsst.forces.AbstractGaussianContribution$GaussianShortPeriodicCoefficients.value(AbstractGaussianContribution.java:2154)

at org.orekit.propagation.semianalytical.dsst.DSSTPropagator$MeanPlusShortPeriodicMapper.mapArrayToState(DSSTPropagator.java:845)

at org.orekit.propagation.integration.StateMapper.mapArrayToState(StateMapper.java:167)

at org.orekit.propagation.integration.AbstractIntegratedPropagator$AdaptedStepInterpolator.convert(AbstractIntegratedPropagator.java:919)

at org.orekit.propagation.integration.AbstractIntegratedPropagator$AdaptedStepInterpolator.getCurrentState(AbstractIntegratedPropagator.java:897)

at org.orekit.propagation.PropagatorsParallelizer$StepHandlingParameters.getDate(PropagatorsParallelizer.java:392)

at org.orekit.propagation.PropagatorsParallelizer.propagate(PropagatorsParallelizer.java:186)