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十九世纪中叶,美国天文学家鈕敦(H. A. Newton)搜集了中国、欧洲和阿拉伯的古代有关紀事后,认为可查考的獅子座流星雨(又名軒辕流星雨)共計十三次,其中有六次选自我国古籍。根据这些資料,他发現獅子座流星雨的出現,有一显明的周期,即約33年。从而預言流星雨現象将于1866年重演。事实正如他所預期的那样。而这是历史上对狮子座流星雨有計划、有准备地进行观测研究的唯一的一次。因为自此以后,流星群經受了木星和土星的摄动,以致地球不再与它的密集部份相遇,所以流星雨变得颇为稀疏。如此說来,近代的研究工具和方法,虽远較古代为精确,但却不与濃盛流星雨
In the mid-nineteenth century, American astronomer HA Newton collected a dozen of Leonid meteor showers (aka Xuanyuan meteor shower) considered ancient in Chinese, European and Arab history after the Chronicle, of which six were selected Since ancient China. Based on these data, he found that the appearance of Leo meteor shower, there is a clear cycle, that is, about 33 years. It is predicted that meteor shower will be repeated in 1866. The truth is exactly what he expected. And this is the only time in history that the Leo meteor shower planned and prepared for observational studies. Since then, meteors have been subjected to the perturbation of Jupiter and Saturn, so that the Earth no longer meet with its dense part, so the meteor shower has become quite sparse. In this sense, modern research tools and methods are far more accurate than the ancient ones but are not associated with strong meteor shower