Return the angular radius of the Sun as viewed from Earth.

The tangent vector from the Earth to the edge of the Sun forms a right-angle triangle with the radius of the Sun as the far side and the Sun-Earth distance as the hypotenuse. Thus, the sine of the angular radius of the Sun is ratio of these two distances.


t (tuple, list, str, pandas.Timestamp, pandas.Series, pandas.DatetimeIndex, datetime.datetime,, numpy.datetime64, numpy.ndarray, astropy.time.Time) – Time to use in a parse-time-compatible format