SOFA banner

  Changes for SOFA Issue: 2016-05-03

 SOFA FORTRAN Library

  • [New Material] The addition of four routines to the Precession/Nutation/Polar motion section,which deliver long-term (+/-200,000 years) precession using the model of Vondrak, Capitaine and Wallace (2011, 2012).
    • iau_LTP
    • iau_LTPB
    • iau_LTPECL
    • iau_LTPEQU
  • [New Material] Introduction of a new section entitled Ecliptic Coordinates. This section consists of six routines dealing with the transformation between equatorial and ecliptic coordinates using either the IAU 2006 precession model or the long term precession model of Vondrak et al.
    • iau_ECEQ06
    • iau_ECM06
    • iau_EQEC06
    • iau_LTECEQ
    • iau_LTECM
    • iau_LTEQEC
  • [Update/Change] Update to t_sofa_f.for to accommodate the ten new routines.
  • [Revision/Doc.] List of called routines corrected in iau_ATCO13 and iau_ATIO13.

 SOFA ANSI C Library

  • [New Material] The addition of four routines to the Precession/Nutation/Polar motion section,which deliver long-term (+/-200,000 years) precession using the model of Vondrak, Capitaine and Wallace (2011, 2012).
    • iauLtp
    • iauLtpb
    • iauLtpecl
    • iau_Ltpequ
  • [New Material] Introduction of a new section Entitled Ecliptic Coordinates. This section consists of six routines dealing with the transformation between equatorial and ecliptic coordinates using either the IAU 2006 precession model or the long term precession model of Vondrak et al.
    • iauEceq06
    • iauEcm06
    • iauEqec06
    • iauLteceq
    • iauLtecm
    • iauLteqec
  • [Update/Change] Update to sofa.h to allow addition of prototypes for the ten new functions listed above.
  • [Update/Change] Update to t_sofa_c.c to accommodate the ten new routines.
  • [Revision/Doc.] List of called routines corrected in iauAtco13 and iauAtio13.

 SOFA Documentation Files

  • [Update/Change] board.lis – inclusion of new board members.
  • [Update/Change] title.lis – release number and date updated.
  • [Update/Change] intro.lis– updated to reflect the updates and additions of this twelfth release.
  • [Update/Change] sofa_lib.lis – new routines added.
  • [Update/Change] sofa_pn_f.pdf – SOFA Earth Attitude Cookbook for those using Fortran. The former Fortran-only version was called sofa_pn.pdf. A few typographic corrections have been made.
  • [Update/Change] sofa_pn_c.pdf – SOFA Earth Attitude Cookbook for those using ANSI C. Like the former Fortran-only version but with function names and argument lists appropriate for the C case.

  Changes for SOFA Issue: 2016-07-29

 SOFA FORTRAN Library

  • [Update/Change] Update to iau_DAT to accommodate the leap second on 2016 December 31.
  • [Update/Change] Change to iau_LDSUN. The internal threshold value changed from 1D-9 to DLIM, where DLIM = 1D-6 / MAX(EM*EM,1D0) and EM is the distance in au from the Sun to the observer.
  • [Update/Change] Update to t_sofa_f.for to accommodate the addition of the leap second to iau_DAT.

 SOFA ANSI C Library

  • [Update/Change] Update to iauDat to accommodate the leap second on 2016 December 31.
  • [Update/Change] Change to iauLdsun. The internal threshold value changed from 1D-9 to DLIM, where DLIM = 1D-6 / MAX(EM*EM,1D0) and EM is the distance in au from the Sun to the observer.
  • [Update/Change] Change to Cr: In the list of "Returned:" arguments listed in the documentation the one argument was listed as "char[]" rather than just "c".
  • [Update/Change] Update to t_sofa_c.c to accommodate the addition of the leap second to iauDat.

 SOFA Documentation Files

  • [Update/Change] sofa_ast_f.pdf & sofa_ast_c.pdf : Astrometry cookbook has been modified to take account of the updated LDSUN/Ldsun routines.
  • [Update/Change] sofa_ts_f.pdf & sofa_ts_c.pdf: Version number of this cookbook corrected.
@ IAU SOFA Center
Copyright © 2001-2016 International Astronomical Union
Last modified: 2016 July 29