astroforge.coordinates.obliquity#

astroforge.coordinates.obliquity(mjd_tdb)[source]#

Compute the mean obliquity of the ecliptic based at the time given.

Parameters:: mjd_tdb (float) – Time at which to compute the obliquity. Time is specified as a Modified Julian Date (MJD) in the TDB time system.
Returns:: obl – Mean obliquity of the ecliptic in radians
Return type:: float

Examples

Basic usage:

>>> obliquity(59025.0)
0.4090460953738584