R Bindings to the 'Astronomy Engine' C Library
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Documentation for package ‘astronomyengine’ version 0.1.0
Help Pages
| astro_angle_from_sun | Angle from the Sun |
| astro_bary_state | Barycentric position and velocity vectors |
| astro_body | Celestial body codes |
| astro_body_code | Get the integer code for a celestial body by name |
| astro_body_name | Get the name of a celestial body |
| astro_combine_rotation | Combine two rotation matrices |
| astro_current_time | Current UTC time according to Astronomy Engine |
| astro_ecliptic | Convert J2000 equatorial coordinates to ecliptic coordinates |
| astro_ecliptic_longitude | Heliocentric ecliptic longitude of a body |
| astro_elongation | Elongation of a celestial body |
| astro_equator | Topocentric equatorial coordinates of a celestial body |
| astro_equator_from_vector | Convert Cartesian Vector to Equatorial Coordinates |
| astro_geo_vector | Geocentric position vector of a celestial body |
| astro_helio_vector | Heliocentric position vector of a celestial body |
| astro_horizon | Horizontal coordinates of a celestial body |
| astro_horizon_from_vector | Convert Cartesian Vector to Horizontal Coordinates |
| astro_hour_angle | Calculate the hour angle of a body |
| astro_identity_matrix | Create an identity rotation matrix |
| astro_illumination | Illumination data for a celestial body |
| astro_inverse_rotation | Calculate the inverse of a rotation matrix |
| astro_make_time | Create an astronomical time value |
| astro_moon_phase | Moon Phase Angle |
| astro_next_lunar_eclipse | Find the next lunar eclipse in a series |
| astro_next_moon_quarter | Find Next Lunar Quarter |
| astro_next_transit | Search for the next transit of Mercury or Venus |
| astro_observer_gravity | Observer gravitational acceleration |
| astro_observer_state | Observer position and velocity vector from geographic coordinates |
| astro_observer_vector | Observer position vector from geographic coordinates |
| astro_pair_longitude | Ecliptic longitude of one body relative to another |
| astro_pivot | Re-orient a rotation matrix by pivoting around an axis |
| astro_rotate_vector | Apply a rotation to a vector |
| astro_rotation_ECL_EQD | Rotation Matrix from J2000 Ecliptic to Equatorial of-Date |
| astro_rotation_ECL_EQJ | Rotation Matrix from ECL to EQJ |
| astro_rotation_ECL_HOR | Rotation Matrix from ECL to HOR |
| astro_rotation_ECT_EQD | Rotation Matrix from ECT to EQD |
| astro_rotation_ECT_EQJ | Rotation Matrix from ECT to EQJ |
| astro_rotation_EQD_ECL | Rotation Matrix from Equatorial of-Date to J2000 Ecliptic |
| astro_rotation_EQD_ECT | Rotation Matrix from EQD to ECT |
| astro_rotation_EQD_EQJ | Rotation Matrix from EQD to EQJ |
| astro_rotation_EQD_HOR | Rotation Matrix from EQD to HOR |
| astro_rotation_EQJ_ECL | Rotation Matrix from EQJ to ECL |
| astro_rotation_EQJ_ECT | Rotation Matrix from EQJ to ECT |
| astro_rotation_EQJ_EQD | Rotation Matrix from EQJ to EQD |
| astro_rotation_EQJ_GAL | Rotation Matrix from EQJ to GAL |
| astro_rotation_EQJ_HOR | Rotation Matrix from J2000 Equatorial to Horizontal |
| astro_rotation_GAL_EQJ | Rotation Matrix from GAL to EQJ |
| astro_rotation_HOR_ECL | Rotation Matrix from HOR to ECL |
| astro_rotation_HOR_EQD | Rotation Matrix from HOR to EQD |
| astro_rotation_HOR_EQJ | Rotation Matrix from Horizontal to J2000 Equatorial |
| astro_search_altitude | Search for when a body reaches a specified altitude |
| astro_search_hour_angle | Search for when a body reaches a specified hour angle |
| astro_search_lunar_eclipse | Search for a lunar eclipse |
| astro_search_max_elongation | Search for maximum elongation |
| astro_search_moon_phase | Search for a Specific Moon Phase |
| astro_search_moon_quarter | Find First Lunar Quarter |
| astro_search_peak_magnitude | Search for peak magnitude of Venus |
| astro_search_relative_longitude | Search for relative longitude event between Earth and another planet |
| astro_search_rise_set | Search for the next rise or set time of a celestial body |
| astro_search_sun_longitude | Search for Sun longitude |
| astro_search_transit | Search for a transit of Mercury or Venus |
| astro_seasons | Equinoxes and Solstices for a Given Year |
| astro_sphere_from_vector | Convert Cartesian Vector to Spherical Coordinates |
| astro_sun_position | Sun's position in ecliptic coordinates |
| astro_vector_from_horizon | Convert Horizontal Coordinates to Cartesian Vector |
| astro_vector_from_sphere | Convert Spherical Coordinates to Cartesian Vector |
| astro_vector_observer | Geographic coordinates from observer position vector |
| next_global_solar_eclipse | Search for the next global solar eclipse |
| next_local_solar_eclipse | Search for the next local solar eclipse |
| next_lunar_apsis | Find the next lunar apsis event |
| next_planet_apsis | Find the next planetary apsis in a series |
| search_global_solar_eclipse | Search for a global solar eclipse |
| search_local_solar_eclipse | Search for a local solar eclipse |
| search_lunar_apsis | Search for lunar apsis events |
| search_planet_apsis | Search for the next planetary apsis |