Documentation

PACoordinates.php

Table of Contents

Functions

angle_to_decimal_degrees()  : mixed

Convert an Angle (degrees, minutes, and seconds) to Decimal Degrees

decimal_degrees_to_angle()  : mixed

Convert Decimal Degrees to an Angle (degrees, minutes, and seconds)

right_ascension_to_hour_angle()  : mixed

Convert Right Ascension to Hour Angle

hour_angle_to_right_ascension()  : mixed

Convert Hour Angle to Right Ascension

equatorial_coordinates_to_horizon_coordinates()  : mixed

Convert Equatorial Coordinates to Horizon Coordinates

horizon_coordinates_to_equatorial_coordinates()  : mixed

Convert Horizon Coordinates to Equatorial Coordinates

mean_obliquity_of_the_ecliptic()  : mixed

Calculate Mean Obliquity of the Ecliptic for a Greenwich Date

ecliptic_coordinate_to_equatorial_coordinate()  : mixed

Convert Ecliptic Coordinates to Equatorial Coordinates

equatorial_coordinate_to_ecliptic_coordinate()  : mixed

Convert Equatorial Coordinates to Ecliptic Coordinates

equatorial_coordinate_to_galactic_coordinate()  : mixed

Convert Equatorial Coordinates to Galactic Coordinates

galactic_coordinate_to_equatorial_coordinate()  : mixed

Convert Galactic Coordinates to Equatorial Coordinates

angle_between_two_objects()  : mixed

Calculate the angle between two celestial objects

rising_and_setting()  : mixed

Calculate rising and setting times for an object.

correct_for_precession()  : mixed

Calculate precession (corrected coordinates between two epochs)

nutation_in_ecliptic_longitude_and_obliquity()  : mixed

Calculate nutation for two values: ecliptic longitude and obliquity, for a Greenwich date.

correct_for_aberration()  : mixed

Correct ecliptic coordinates for the effects of aberration.

atmospheric_refraction()  : mixed

Calculate corrected RA/Dec, accounting for atmospheric refraction.

corrections_for_geocentric_parallax()  : mixed

Calculate corrected RA/Dec, accounting for geocentric parallax.

heliographic_coordinates()  : mixed

Calculate heliographic coordinates for a given Greenwich date, with a given heliographic position angle and heliographic displacement in arc minutes.

carrington_rotation_number()  : mixed

Calculate carrington rotation number for a Greenwich date

selenographic_coordinates1()  : mixed

Calculate selenographic (lunar) coordinates (sub-Earth)

selenographic_coordinates2()  : mixed

Calculate selenographic (lunar) coordinates (sub-Solar)