(meteorobs) Meteor Observations form Northern Nevada on June 22, 2006

[Robin Gray]

Karl,

You have brought up a good point. Magnitude is not a
linear scale. I can only speak for myself when telling
you how I get the figure for average magnitude in my
reports. Nobody taught me this, I just came up with it
on my own, so it may be wrong. And it is a linear
average. I take each meteor, assign it a value based
on its magnitude, then divide through by the number of
meteors. But this may not give the real average
magnitude. So I guess my question is the same as yours
- how do you calculate the average magnitude? If
someone can illuminate me on this I will use that
method from now on.

regards,

Robin Gray

--- Karl Antier <ka.antier at wanadoo.fr> wrote:

> Hi all !
> 
> I was just wondering something : in many meteor
> reports, one can read,
> as in yours : 
> 
> > Shower -2 -1 0 1 2 3 4 5 Average Magnitude
> > 
> > SPO 1 5 5 6 3.06
> 
> But how is this average magnitude calculated ?
> Is it a usual average ?
> As magnitude isn't a linear scale, is there a
> formula to calculate it ?
> And what are the information on meteor showers that
> are deduced from this
> information ? r index ?
> 
> Thanks in advance for your answers !
> Clear skies !
> Karl
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