Ted Molczan wrote: > > All of the USA 129 points are consistently early by ~4.3 > > seconds; but I was using 5 day-old elsets (Mike's > > 05265.83010893) as the wife was using the computer before I > > went out. So I *guess* that it has manoeuvred in the last 24 > > h (even though Pierre's last report stated it was on time). > > Another go with Mike's latest elset (05269.83359104 ) gives > > me a time error of -0.018 s, which confirms to me that a > > manoeuvre has taken place and our group has been onto it. > > There was no manoeuvre, only a modest (approx 20 percent) variation in the rate > of decay. For this object, a 25 percent uncertainty in the rate of decay results > in about 4 s prediction time uncertainty after 5 days. > Thanks Ted, I should have realised that with this object the rate of decay would be fast. Best wishes Bruce Bruce MacDonald COSPAR Site 2751 Devizes, Wiltshire, UK 51.3440 N 1.9849 W 125m (WGS84) ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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