(meteorobs) What is the meaning of FM(FMD)

[Mikhail Maslov]

It is a parameter showing the density of meteor trail. For example,
FM(FMD) for 1 revolution Leonid trail is ~1.

Best regards, Mikhail

Y> I have read this prediction about LEO meteor shower,but I do not understand the meaning of FM(FMD).Dose anybody know it?I very much hope that an answer.

Y>                                                                           --Yi Cao
                                          
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