tttcg¶
- erfa.tttcg(tt1, tt2)[source]¶
Time scale transformation: Terrestrial Time, TT, to Geocentric Coordinate Time, TCG.
- Parameters:
- tt1double array
- tt2double array
- Returns:
- tcg1double array
- tcg2double array
Notes
Wraps ERFA function
eraTttcg
. The ERFA documentation is:- - - - - - - - - e r a T t t c g - - - - - - - - - Time scale transformation: Terrestrial Time, TT, to Geocentric Coordinate Time, TCG. Given: tt1,tt2 double TT as a 2-part Julian Date Returned: tcg1,tcg2 double TCG as a 2-part Julian Date Returned (function value): int status: 0 = OK Note: tt1+tt2 is Julian Date, apportioned in any convenient way between the two arguments, for example where tt1 is the Julian Day Number and tt2 is the fraction of a day. The returned tcg1,tcg2 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) 2013-2023, NumFOCUS Foundation. Derived, with permission, from the SOFA library. See notes at end of file.