[IGSMAIL-6244] updated IERS Conventions Chapters 5, 10, 11

[Gérard Petit]

Author: Gérard Petit (IERS Conventions Center)

Information on the updates to the IERS Conventions

The IERS Conventions Center informs of the following updates:

Three chapters of the IERS Conventions have been updated on 27 August 2010:

Chapter 5 "Transformation between the International Terrestrial Reference
System and Geocentric Celestial Reference System" see
http://tai.bipm.org/iers/convupdt/convupdt_c5.html.
Corrections entered on 23 July 2010 are cancelled. The text of the chapter
is changed in equation (16) and Table 5.2a to make it consistent with the
electronic versions of Table 5.2a and Table 5.2b and to the SOFA routine
XY06.

Chapter 10 "General relativistic models for space-time coordinates and
equations of motion" see
http://tai.bipm.org/iers/convupdt/convupdt_c10.html.
    * The exact form of the TCG-TT relation is provided in equation (1).
    * The wording "YYY-compatible" where YYY is a time coordinate follows
IAU RIFA recommendations.
    * An updated software XHF2002_IERS is provided for the TCB-TCG
transformation and the information on other existing software is
reformulated.
    * Some modifications in the text at the end of the section 10.2. 

Chapter 11 "General relativistic models for propagation" see
http://tai.bipm.org/iers/convupdt/convupdt_c11.html.
The wording "YYY-compatible" where YYY is a time coordinate follows IAU RIFA
recommendations. 
A few words changed e.g. in 11.2 to make the text compatible with all
"ranging techniques" or when needed by changes in other sections.
Modifications do not concern the technical content and are NOT outlined in
the margin of the chapter.


Gerard Petit and Brian Luzum
IERS Conventions Center