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eraFane03

rv = ERFA.fane03(t)

Fundamental argument, IERS Conventions (2003): mean longitude of Neptune.

Given:

   t     double    TDB, Julian centuries since J2000.0 (Note 1)

Returned (function value):

         double    mean longitude of Neptune, radians (Note 2)

Notes:

  1. Though t is strictly TDB, it is usually more convenient to use TT, which makes no significant difference.

  2. The expression used is as adopted in IERS Conventions (2003) and is adapted from Simon et al. (1994).

References:

McCarthy, D. D., Petit, G. (eds.), IERS Conventions (2003), IERS Technical Note No. 32, BKG (2004)

Simon, J.-L., Bretagnon, P., Chapront, J., Chapront-Touze, M., Francou, G., Laskar, J. 1994, Astron.Astrophys. 282, 663-683

This revision: 2021 May 11

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