Name

CL_mod_sidTimeG50 — Sideral time in Gamma50 (Veis) frame

Calling Sequence

   [gmst,[gmstp]] = CL_mod_sidTimeG50(cjd_ut1])
   
   

Description

  • This function computes the sideral time gmst at date cjd_ut1 in Gamma50 Veis frame.

    It also optionally computes the first derivative of the sideral time : gmstp. This value is a constant

  • Last update : 20/2/2008

Parameters

cjd_ut1:

CNES julian date in UT1 time scale(1xN)

gmst:

Gamma50 Veis sideral time [rad] (1xN)

gmstp:

Gamma50 Veis sideral time first derivative [rad/s] (1xN)

Bibliography

CNES - MSLIB FORTRAN 90, Volume R (mr_tsid_veis)

See also

CL_mod_sidTime

Authors

CNES - DCT/SB

Examples

cjd_utc = CL_dat_cal2cjd(2008,10,25,15,30,25)  // 25 oct 2008 at 15h30min25s
sec_ut1_minus_utc = 0.2;
cjd_ut1 = cjd_utc + sec_ut1_minus_utc/86400.;  // ut1 time
gmst = CL_mod_sidTimeG50(cjd_ut1);

// With first time derivative :
[gmst,gmstp] = CL_mod_sidTimeG50(cjd_ut1);