Aurigid流星雨将在本周横穿天空,活动持续至9月5日,其中8月31日至9月1日夜间为峰值期1。这场流星雨源自长周期彗星C/1911 N1(Kiess),该彗星的公转周期约为2000年1。
虽然Aurigid流星雨的流星数量相对较少,在理想观测条件下典型峰值约为每小时6颗1,但其极高的速度使其具有重要的天文观测价值。该流星雨中的流星进入地球大气的速度约为66-67公里/秒,远快于短周期彗星流星的15公里/秒1。
澳大利亚观测者今年观测条件并不理想1。强烈的月光会淡化较暗流星的可见度1,而在南部地区,辐射点在早上3时澳大利亚东部标准时间(AEST)才升起,这进一步限制了观测机会1。
The Aurigid meteor shower will grace the sky this week, with activity continuing through September 5th and reaching its peak during the nights of August 31st to September 1st 1. Though relatively unknown compared to other annual meteor displays, this celestial event deserves attention due to the exceptional speed at which its meteors streak through Earth's atmosphere—approximately 66 to 67 kilometers per second 1, significantly faster than the roughly 15 kilometers per second typical of meteors from short-period comets 1.
The shower originates from long-period comet C/1911 N1 (Kiess), which completes an orbit around the sun roughly every 2,000 years 1. Under ideal viewing conditions, observers can expect to see about six meteors per hour at peak 1. However, astronomical conditions will not be equally favorable everywhere; moonlight will significantly diminish the visibility of fainter meteors 1, while Australian observers will face particularly poor viewing circumstances this year, with the radiant point rising around 3 a.m. Australian Eastern Standard Time in southern regions 1.
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