[I received the following message from Kurt Jonckheere to be posted to the list. Mike McCants] hello all, in the next days, I will prepare the first update to the PPAS 8, our database of measurements of the flashing period of all objects with varying light curve. Especially if you still have observations of 1998, please send them as soon as possible, because somewhere in March I will make the report of '98. All observations are appreciated very much !! Some more info below : The Belgian Working Group Satellites has been collecting observations of flashing periods for several years now. As different people can report the same thing in different ways, the best is to collect observations in a standardized way. Therefor the PPAS format was created. PPAS = A database collecting Photometric Periods of Artificial Satellites. The PPAS format looks like : Cospar Date time UT ob total acc #of flash remarks ID YY-MM-DD HH:MM:SS.s se time fls period 94- 56 A 98-04-14 12:06 AB 193.7 .04 10 19.374 +-.004, flsh peak mag +2 Thanks to this standardization, it is easier to create an archive and to start with analyzing the data. We have provided a e-mail address to which you can send your observations. In this way you make sure your observations are collected and made available for everybody for analysis. Please send your observations of flashing satellites, preferrably in the correct PPAS format to ppas@lists.satellite.eu.org If you send your observations to SeeSat-L, please also send a copy to the observations address. In this way you are sure your observations will be used for the updates to our PPAS archive. You can find more information about the Belgian Working Group Satellites and our PPAS archive starting from : http://www2.plasma.mpe-garching.mpg.de/sat/satintro.html and looking for BWGS and PPAS. If you have any questions about the above or you want more information, do not hesitate to contact me ! Greetings, Kurt Jonckheere, observations collector for the Belgian Working Group Satellites. ------------------------------------------ kjon@mail.dma.be