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Re: (meteorobs) Radiant Diameter vs Radiant Activity Period



On Thu, 15 Jul 1999 GeoZay@aol.com wrote:
> lew>>Again, George, the determining factor for radiant size is the 
> distribution
> of DIFFERENT orbits among the particles that make up the stream. If you can
> imagine a hypothetical stream where all the meteoroids were moving in
> EXACTLY parallel paths through space, the radiant diameter would (I assume)
> be zero degrees... [snip] <<
> 
> So a showers radiant diameter isn't dependent upon how wide the stream itself 
> is, but rather how many different orbits are present within that stream?

Put another way, the radiant diameter measures the spread of angles of
intersection of meteoroid orbits with the Earth's orbit.

Malcolm

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