Saturday, December 22, 2012

The underappreciated Ursid meteor shower peaks Saturday

and the moon is looking none too bad either

The Ursids were probably discovered by William F. Denning who observed them for several years around the start of the 20th century.[2] While there were sporadic observations after, the first coordinated studies of shower didn't begin until Dr. A. Bečvář observed an outburst of 169 per hour in 1945.[2] Further observations in the 1970s and ongoing to current have established a relationship with comet 8P/Tuttle.[2] Peter Jenniskens and Esko Lyytinen discovered that outbursts could happen when comet Tuttle was at aphelion because some meteorids get trapped in the 7/6 orbital resonance with Jupiter.


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