final double          delta        = getDate().durationFrom(state.getDate());
final double          dt           = delta - tauD;
final SpacecraftState transitState = state.shiftedBy(dt);
final Frame     bodyFrame = station.getOffsetFrame().getParentShape().getBodyFrame();
final Transform iner2Body = state.getFrame().getTransformTo(bodyFrame, getDate());
<BUG>final OffsetDerivatives od = station.getOffsetDerivatives(6, 3, 4, 5);
</BUG>
final FieldVector3D<DerivativeStructure> east   = od.getEast();
final FieldVector3D<DerivativeStructure> north  = od.getNorth();
final FieldVector3D<DerivativeStructure> zenith = od.getZenith();

final double          delta        = getDate().durationFrom(state.getDate());
final double          dt           = delta - tauD;
final SpacecraftState transitState = state.shiftedBy(dt);
final Frame     bodyFrame = station.getOffsetFrame().getParentShape().getBodyFrame();
final Transform iner2Body = state.getFrame().getTransformTo(bodyFrame, getDate());
final OffsetDerivatives od = station.getOffsetDerivatives(factory, 3, 4, 5);
final FieldVector3D<DerivativeStructure> east   = od.getEast();
final FieldVector3D<DerivativeStructure> north  = od.getNorth();
final FieldVector3D<DerivativeStructure> zenith = od.getZenith();
