| Date: | 2010-09-06 09:55:00 | |
| Sender: | Gérard Petit (IERS Conventions Center) <gpetit@bipm.org> | |
| Subject: | [SLR-Mail] No. 1907: RE: updated IERS Conventions Chapters 5, 10, 11 | |
| Author: | Gérard Petit | |
| Content: | ******************************************************************************** SLR Electronic Mail 2010-09-06 09:55:00 UTC Message No. 1907 ******************************************************************************** Author: G=E9rard Petit (IERS Conventions Center) Subject: RE: updated IERS Conventions Chapters 5, 10, 11 Information on the updates to the IERS Conventions The IERS Conventions Center informs of the following updates: Two chapters of the IERS Conventions have been updated on 3 September = 2010: Chapter 2 ”Conventional celestial reference system and frame” see http://tai.bipm.org/iers/convupdt/convupdt_c2.html. The chapter has been significantly rewritten, with F. Arias, S. = Bouquillon, A. Fey, G. Francou and N. Zacharias as main contributors. It describes ICRF2, the second realization of the ICRF recommended as the fundamental realization of the ICRS by Resolution B3 of the IAU (2009). Chapter 4 ”Terrestrial reference systems and frames”=20 see http://tai.bipm.org/iers/convupdt/convupdt_c4.html. A presentation of ITRF2008, the current reference realization of the = ITRS, is now included (from Z. Altamimi). The subroutine GCONV2 is proposed = for coordinate transformation. Chapter 5 ”Transformation between the International Terrestrial = Reference System and Geocentric Celestial Reference System” has been updated on 5 September 2010:=20 see http://tai.bipm.org/iers/convupdt/convupdt_c5.html. Change the sign of the term in t**4 for X in equation 16 (noted by C. Hohenkerk). Gerard Petit and Brian Luzum IERS Conventions Center From: =?iso-8859-1?Q?G=E9rard_Petit?= ******************************************************************************** |