true_obliquity_of_ecliptic#
- sunpy.coordinates.sun.true_obliquity_of_ecliptic(t='now')[source]#
Returns the true obliquity of the ecliptic, using the IAU 2006 definition. Correction for nutation is included.
- 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 format
Notes
The nutation model is IAU 2000A nutation with adjustments to match IAU 2006 precession.