constants.hpp

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#pragma once

#include <array>
#include <utility>

namespace pass
{

struct celestial_body
{
  public:
    static const celestial_body SUN;
    static const celestial_body MERCURY;
    static const celestial_body VENUS;
    static const celestial_body EARTH;
    static const celestial_body MARS;
    static const celestial_body JUPITER;
    static const celestial_body SATURN;
    static const celestial_body URANUS;
    static const celestial_body NEPTUNE;

    double mu;
    double penalty;
    double penalty_coefficient;

    std::pair<std::array<double, 3>, std::array<double, 3>> ephemeris(
        const double mjd2000) const;

  private:
    celestial_body(double mu, double penalty,
                   double penalty_coefficient) noexcept;
};

struct asteroid
{
  public:
    asteroid(std::array<double, 6> keplerian, double epoch, double mu) noexcept;

    std::array<double, 6> keplerian;
    double epoch;
    double mu;

    std::pair<std::array<double, 3>, std::array<double, 3>> ephemeris(
        const double jd) const;
};
} // namespace pass