Last revision October 20, 1995 TJD 8366 = April 20, 1991 A decision had been made to start the BATSE trigger numbers at 101 after launch. Various prelaunch tests had resulted in triggers with lower numbers which had been inserted into the MOPS BATSE burst catalog file. During the activation phase after launch, commands to initiate burst events ("commanded bursts" or "commanded triggers") were sent several times. One of these commanded triggers occurred when the last burst number had been reset to zero in the onboard computer. Thus, a trigger no. 1 occurred at TJD/SoD = 8366/62664. Because it was out of sequence and less than 101, it was decided to ignore the event and not include it in the MOPS burst catalog.