M. Warner Losh wrote: > In message: <[EMAIL PROTECTED]> > Hal Murray <[EMAIL PROTECTED]> writes: > : > : > Is there some way to get TT to better than a tenth of a second, or is > : > the earth just too sloppy of a time keeper? > : > : My guess... > : > : The earth is sloppy on this scale. If it wasn't, we could predict leap > : seconds. > > UT1 is a smoothed function, not an instantaneous one, since it factors > out seasonal variation that's in UT2. NIST doesn't publish DUT1 more > accurately than milliseconds with a +/- 5ms caveat. So +/- 100ms is > "only" 20x worse than data published at nist. > > Warner > Try subscribing to the IERTS prediction service, which will email predictions of DUT1 at regular intervals. Failing this just download their predictions.
Bruce _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
