Bruno Tilgner asked: >For the benefit of those who like me are ignorant about this notation, >could you please explain what NOTAMS coordinates are? I was afraid someone would ask! The reason being that I was not all that certain myself. I was given the translation some time ago, but forgot it, and could not find it in my notes. So, I phoned the same U.S. Coast Guard station that gave me the data last night, and ... they had to look it up! Turns out, it is NOTAM, (the S I added is erroneous) which means Notice to AirMen. The NOTAM coordinates define a region to be avoided. I imagine that in the case of a missile launch, it is the area where booster stages are expected to fall. I recall that for last July's Titan 4 launch from Cape Canaveral, I was advised that the NOTAM was simply defined as a region several miles either side of a line emanating from the launch site, at a certain azimuth, for some distance out to sea. So it appears there are different ways to specify the information. I asked the Coast Guard person how they alert boats, and he told me they issue a BNTM = Broadcast Notice to Mariners. That is all I know about it. I am certain that there are plenty of folks on the list who could elaborate. My only interest in the data is to compute launch azimuths of spy sats. Just goes to show how difficult it is to keep technical information about these launches completely secret. Ted Molczan Thanks in advance! Bruno Tilgner 100533.2016@compuserve.com 48.84N 2.20E UTC+1