ae_physical_t Struct Reference

For holding information on a body's physical and rotational properties. More...

`#include <aephem.h>`

## Data Fields | |

double | r_mean |

Mean radius, km. Not required. | |

double | r_eq |

Equatorial radius, km. | |

double | r_pole |

Polar radius, km. | |

double | rms_dev_spheroid |

RMS deviation from spheroid, km. Not required. | |

double | max_elev |

Maximum elevation, km. Not required. | |

double | max_depress |

Maximum depression, km. Not required. | |

double | pole_ra |

North pole ra, J2000. More... | |

double | pole_ra_t |

North pole ra coefficient for T = Julian centuries since J2000. | |

struct ae_physical_term_t * | ra_sin_term |

Sine series coefficents for the north pole ra. | |

double | pole_dec |

North pole declination, J2000. More... | |

double | pole_dec_t |

North pole dec coefficient for T = Julian centuries since J2000. | |

struct ae_physical_term_t * | dec_cos_term |

Cosine series coefficents for the north pole dec. | |

double | w |

Prime meridean. More... | |

double | w_d |

Prime meridean coefficient for d = days since J2000. | |

double | w_d_sq |

Prime meridean coefficient for d^2. | |

struct ae_physical_term_t * | w_sin_term |

Sine series coefficents for the prime meridian. | |

For holding information on a body's physical and rotational properties.

The members `pole_ra_sin`

, `pole_dec_cos`

and `w_sin`

point to arrays which are of length , where is `n_pole_ra_t`

, etc. The elements of the arrays are , so that the contribution to the rotation terms are as , where is the number of Julian centuries since J2000 if is AE_PHYSICAL_D or the number of days since J2000 if is AE_PHYSICAL_T, and the sine term is a cosine for the case of `pole_dec_cos`

.

double ae_physical_t::pole_dec |

North pole declination, J2000.

Referenced by ae_phys_pole(), and ae_subobs_point().

double ae_physical_t::pole_ra |

North pole ra, J2000.

Referenced by ae_phys_pole(), and ae_subobs_point().

double ae_physical_t::w |

Prime meridean.

Referenced by ae_phys_pole(), and aes_subobs_point().

The documentation for this struct was generated from the following file:

AEPHEM documentation generated by Doxygen v1.8.9.1 at Sat Aug 1 2015 15:02:46. |