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File J2MeanVop.hpp

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#pragma once

#include <units/units.hpp>

#include <astro/astro.fwd.hpp>
#include <astro/propagation/equations_of_motion/EquationsOfMotion.hpp>
#include <astro/propagation/force_models/ForceModel.hpp>
#include <astro/state/orbital_elements/OrbitalElements.hpp>

namespace astrea {
namespace astro {

class J2MeanVop : public EquationsOfMotion {

  public:
    J2MeanVop() = default;

    ~J2MeanVop() = default;

    OrbitalElementPartials operator()(const State& state, const Vehicle& vehicle) const override;

    StateTransitionMatrix compute_stm(const State& state, const Vehicle& vehicle) const override;

    constexpr std::size_t get_expected_set_id() const override { return OrbitalElements::get_set_id<Keplerian>(); };

  private:
    const Unitless eccTol = 1e-10 * mp_units::one;                        
    const Angle incTol    = 1e-10 * mp_units::angular::unit_symbols::rad; 
};

} // namespace astro
} // namespace astrea