斯威夫特-塔特尔周期彗星
(原标题: Periodic Comet Swift-Tuttle)
2024-08-08
浏览次数: 14
109P/斯威夫特-塔特尔彗星是一颗轨道周期约133年的哈雷彗星，被认为是每年英仙座流星雨的母体。这颗彗星最后一次造访内太阳系是在1992年。然后，它不容易被肉眼看到，但它确实变得足够亮，可以在大多数地方用双筒望远镜和小型望远镜看到。1992年11月24日，用胶片记录下了斯威夫特-塔特尔的绿色彗发、长离子尾和尘埃尾。这是在这颗大型周期性彗星最接近地球的16天后。斯威夫特-塔特尔彗星预计将在2126年再次出现在夜空中。与此同时，沿着斯威夫特-塔特尔轨道留下的尘埃彗星碎片将继续被清扫，形成地球上最著名的7月和8月流星雨。
查看原文解释
A Halley-type comet with an orbital period of about 133 years, Comet 109P/Swift-Tuttle is recognized as the parent of the annual Perseid Meteor Shower. The comet's last visit to the inner Solar System was in 1992. Then, it did not become easily visible to the naked eye, but it did become bright enough to see from most locations with binoculars and small telescopes. This stunning color image of Swift-Tuttle's greenish coma, long ion tail and dust tail was recorded using film on November 24, 1992. That was about 16 days after the large periodic comet's closest approach to Earth. Comet Swift-Tuttle is expected to next make an impressive appearance in night skies in 2126. Meanwhile, dusty cometary debris left along the orbit of Swift-Tuttle will continue to be swept up creating planet Earth's best-known July and August meteor shower.
© Gerald Rhemann