era.tcgtt.md

eraTcgtt

[rv, tt1, tt2] = ERFA.tcgtt(tcg1, tcg2)

Time scale transformation: Geocentric Coordinate Time, TCG, to Terrestrial Time, TT.

Given:

   tcg1,tcg2  double    TCG as a 2-part Julian Date

Returned:

   tt1,tt2    double    TT as a 2-part Julian Date

Returned (function value):

              int       status:  0 = OK

Note:

   tcg1+tcg2 is Julian Date, apportioned in any convenient way
   between the two arguments, for example where tcg1 is the Julian
   Day Number and tcg22 is the fraction of a day.  The returned
   tt1,tt2 follow suit.

References:

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

IAU 2000 Resolution B1.9

This revision: 2021 May 11

Copyright (C) 2013-2021, NumFOCUS Foundation. Derived, with permission, from the SOFA library.