[LEAPSECS] Schedule for success

[Richard B. Langley]

Quoting Poul-Henning Kamp <phk at phk.freebsd.dk>:


> In message <1230733996.495b82acce1c9 at webmail.unb.ca>, "Richard B. Langley" writ

> es:

> 

> >iii) The introduction of the satellite Doppler technique (Transit) to help in

> >establishing the BIH meridian; the Doppler datum turned out to have a different

> >longitude origin.

> >iv) Misalignment of the series of WGS reference meridians with that of BIH.

> 

> So which datum is used for the zero meridian, which defines the UT* family

> of timescales ?


That would be the current ITRF as established by the IERS:
<http://www.iers.org/MainDisp.csl?pid=42-17>
It is a realization of the ITRS:
<http://www.iers.org/MainDisp.csl?pid=97-108>

===============================================================================
 Richard B. Langley                            E-mail: lang at unb.ca
 Geodetic Research Laboratory                  Web: http://www.unb.ca/GGE/
 Dept. of Geodesy and Geomatics Engineering    Phone:    +1 506 453-5142
 University of New Brunswick                   Fax:      +1 506 453-4943
 Fredericton, N.B., Canada  E3B 5A3
     Fredericton?  Where's that?  See: http://www.city.fredericton.nb.ca/
===============================================================================