sun_ra_dec

ssapy.utils.sun_ra_dec(time_)[source][source]

Calculate the Right Ascension (RA) and Declination (Dec) of the Sun at a given time.

This function computes the Sun’s position in the sky in terms of its Right Ascension (RA) and Declination (Dec) in radians, based on the provided time. It uses the get_body function from the .body module to retrieve the Sun’s coordinates.

Parameters:

time_ (float): The time in Modified Julian Date (MJD) format.

Returns:

tuple:

  • ra (float): The Sun’s Right Ascension in radians.

  • dec (float): The Sun’s Declination in radians.

Notes:

  • The function assumes the existence of a get_body function in the .body module, which calculates the celestial coordinates of the Sun.

  • The Time class from astropy.time is used to handle the MJD time format.

Example:

sun_ra_dec(60000.0) -> (3.141592653589793, -0.40909280422232897)