true_declination#
- sunpy.coordinates.sun.true_declination(t='now', equinox_of_date=True)[source]#
Returns the Sun’s true geometric declination relative to Earth, referred to the mean equinox of date (as default). No corrections for nutation or aberration are included. The correction due to light travel time would be negligible, so the output is also the astrometric declination.
- Parameters:
t (
tuple,list,str,pandas.Timestamp,pandas.Series,pandas.DatetimeIndex,datetime.datetime,datetime.date,numpy.datetime64,numpy.ndarray,astropy.time.Time) – Time to use in a parse-time-compatible formatequinox_of_date (
bool) – If True, output is referred to the mean equinox of date. Otherwise, output is referred to the J2000.0 epoch (ICRF orientation, not dynamical orientation).