Why are the Geminids generally more dependable year-to-year than cometary showers?

Answer

Their debris stream is denser and more stable

The stream originates from the asteroid 3200 Phaethon, creating a debris stream that is denser and more stable, making the shower less susceptible to disruption from solar wind or planetary alignments.

Why are the Geminids generally more dependable year-to-year than cometary showers?
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