The Geminids (GEM) peak on the night of December 13/14. Rates will rise steadily this week as we approach the maximum and the moon wanes. The current radiant is located in northern Gemini, five degrees west of the second magnitude star Castor (Alpha Geminorum). These meteors are best seen near 0200 local standard time when the radiant lies highest above the horizon. This shower is best suited for the Northern Hemisphere but some activity can be seen south of the equator when the radiant culminates low in the northern sky. At 35 km/sec. the Geminids produce meteors of average velocity.
The highest peak is expected in the morning of Thursday the 14th. Expect rates up to 120 meteors per hour in real dark areas, down to a maybe a dozen in more urban regions.
An “on the fly” ZHR graph is available, containing the data reported through the IMO electronic report form (+- 2
minutes delay). Note that by using the electronic form, you allow for more effective data processing and quality control.
We hope this feature motivates your observing efforts! Suggestions and changes are very welcome (source code is open). Note that these are automated results without population index or perception
corrections applied, so keep an eye on WGN for scientific results.
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