Return to directory of Todd's CASA extensions

Returns the mean obliquity in radians for the specified date/time. Explanatory supplement to astronomical almanac, equation 3.222-1.


  • date: blank means use the current time; otherwise:
  • Input date format: 2011/10/15 05:00:00 or 2011/10/15-05:00:00 or 2011-10-15 05:00:00 or 2011-10-15-05:00:00 or 2011-10-15T05:00:00 or 2011-Oct-15 etc.


CASA <3>: au.meanObliquity('2016-03-15')
  Out[3]: 0.40905603218786002

CASA <4>: degrees(au.meanObliquity('2016-03-15'))
  Out[4]: 23.437184228731933

-- ToddHunter - 2016-03-15
Topic revision: r1 - 2016-03-15, ToddHunter
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding NRAO Public Wiki? Send feedback