[IGSMAIL-5955]: updated IERS Conventions Chapter 5

[Jim.Ray]

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IGS Electronic Mail      18 Jun 06:05:59 PDT 2009      Message Number 5955
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Author: Jim Ray (forward of IERS Message)


-------- Original Message --------

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IERS Message No. 147                                       June 18, 2009
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Information on the updates to the IERS Conventions

The IERS Conventions Center provides the following information on the
updates to the IERS Conventions since IERS Message No. 143 (April 16,
2009).

Chapter 5 "Transformation between the International Terrestrial
Reference System and Geocentric Celestial Reference System" has been
updated on 16 June 2009, see
http://tai.bipm.org/iers/convupdt/convupdt_c5.html .
The chapter (with a new title) has been significantly rewritten, with
N. Capitaine and P. Wallace as the main authors, in order to make the
chapter compliant with the IAU 2000/2006 resolutions and the
corresponding terminology. A presentation of the IAU 2006 resolutions
has been added, and a description of the models, procedures and software
to implement the IAU 2000/2006 resolutions have been included. The
organization of the chapter has been modified in order to clarify the
successive steps to be followed in the coordinate transformation.
As numerous changes have occured throughout the whole chapter, they
cannot be individually highlighted.

Minor changes have been made on 14 May 2009 to Chapters 6, 7 and 10, see
the links in http://tai.bipm.org/iers/convupdt.html .

Gerard Petit and Brian Luzum
IERS Conventions Center


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