Discrepancy in STM During Propagation Using Autodiff vs Orekit

[Serrof]

Hi and welcome,

@Emiliano

Also, if I’m not mistaken the STM is not computed with automatic differentiation, but rather from the variational equations, but again, I’m not sure.

yes Emiliano is right, the STM spawns from the variational equations, themselves derived with AD.
A bit more details here.

Cheers,
Romain.