(meteorobs) "The" shape of the Perseids ZHR profile

[gmlobdell at seanet.com]

Daniel,

Very interesting charts.  You're right your axis labeling is a problem. 
Usually charts such as this have Solar Longitude as the unit along the X
axis, typically with a conversion to UTC date/times.  For meteor showers,
the solar longitude of a peak is (usually) constant from year to year, and
it's how to tell which peak is the "traditional" peak and which one is a
new peak.

Clear Skies!

Gregg Lobdell


> With the 2013 peak having stabilized (I think), we have now automatically
> generated ZHR profiles of the past seven Perseids maxima, shown all at
> once in http://www.astro.uni-bonn.de/~dfischer/perseid-plots.html
> (unfortunately the time axis labeling changes several times) - is there
> *any* "typical" shape of the peak underlying these year-to-year
> variations? In some years identified individual dust trails contributed
> 'extra' peaks, I think, e.g. in 2009.
>
> Daniel
>
>
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