ObOfE:

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   Computes the mean obliquity of the ecliptic of date.
   (with respect to the mean equator of date)
   Rounds to 6 decimal places.

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   Form:
   x = ObOfE( T )
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   Inputs
   ------
   T	(1,:)  Julian centuries of 86400s dynamical time from j2000.0

   -------
   Outputs
   -------
   x	(1,:)  The obliquity of the ecliptic (degrees)

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   References:   The Astronomical Almanac for the Year 1993,
                  U.S. Government Printing Office, 1993, p. B18.
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Children:

Common: Time/Date2JD
Common: Time/JD2T