Those who rely on the elements I post to SeeSat-L, mainly SGP4-formatted versions of Pierre Neirinck's elements, may be interested to know that I am Y2K ready - have been since Dec'95. Lacking any clear guidance from U.S. Space Command, NORAD or NASA/OIG, here is how my software would format a fictitious element set of an object launched on the first day of the year 2000: 1 30000U 00001 A 1.12345678 .00000012 00000-0 96352-4 0 17 2 30000 67.8901 45.6789 0012345 123.4567 234.5678 12.34567890 08 I believe that the International Designation is self-explanatory. In the epoch, the leading zeroes of the day of year have been dropped, which was common NORAD practice when I wrote my program, in the late '80s. That may or may not have been common practice in recent years, but I have not bothered to keep up with minor changes. The year field of the epoch is blank. If NORAD decides to show one or both of the zeros, then I propose to do likewise. My programming experience (BASIC, FORTRAN) leads me to believe that blank spaces in numeric fields are always read as zeros, so the decision to show leading zeros is mainly one of aesthetics. I will take a close look at NASA/OIG elements on 01 Jan 00, and most likely will follow their example on leading zeros. Ted Molczan ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html