[LEAPSECS] Schedule for success

Richard B. Langley lang at unb.ca
Wed Dec 31 10:48:31 EST 2008

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

> And since WGS84 is not rigidly linked to ITRS, doesn't that mean

> that in order to use DUT1 broadcasts to point a telescope (precisely[1])

> you also need to the ITRS/WGS84 difference at your place ?


> Has anybody calculated what the worst case DUT1 difference is in

> the WGS84 datum ?

The current version of WGS84 differs from the current version of ITRF by only a few
centimetres. WGS84 was purposely updated to agree as closely as possibly with ITRF.

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/

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