本帖最后由 meteorobs 于 2009-12-3 14:57 编辑
下面是IMO（国际流星组织）对于今年双子座流星雨的预测
One of the finest, and probably the most reliable, of the major annual showers presently observable, whose peak this year is virtually coincident with new Moon. The Geminid radiant culminates around 2h local time, but well north of the equator it rises about sunset, and is at a usable elevation from the local evening hours onwards, while in the southern hemisphere, the radiant appears only around local midnight or so. Even from more southerly sites, this is a splendid shower of often bright, medium-speed meteors, a rewarding sight for all watchers, whatever method they employ. The peak has shown slight signs of variability in its rates and timing in recent years, with the more reliably-observed maxima during the past two decades all having occurred within 2h20m of the time given above. The main predicted timing favours places from all across the Americas eastwards to western Europe and western Africa. An earlier or later timing would extend this best-visible zone some way eastwards or westwards respectively. Some mass-sorting within the stream means the fainter telescopic meteors should be most abundant almost 1° of solar longitude (about one day) ahead of the visual maximum, with telescopic results indicating such meteors radiate from an elongated region, perhaps with three sub-centres. Further results on this topic would be useful.
简介如下：双子座流星雨是每年最优秀、最可靠的流星雨之一。尤其是今年几乎没有月光干扰，中速明亮的流星对于任何地区的观察者来说都是很棒的。每年双子座流星雨的活动期在12月的7日至17之间，今年的极大时刻位于14号世界时5h10m，也就是北京时间14日下午13：10。最佳观测地横跨美洲、西欧和西部非洲。对于我国的观测者来说12号至15号期间选择天气晴朗的一天，到郊外环境黑暗、视野开阔的地点观看就可以了。双子座从天黑后就会升起，直到天亮前才落下。所以有条件的同好建议整夜观测。在1999年的双子座流星雨期间，北京天文同好会的爱好者们在极大的一整夜观测到了近千颗流星！ |
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