裸眼彗星ZTF
(原标题: Naked-eye Comet ZTF)
2023-01-21
浏览次数: 17
彗星C/2022E3 （ZTF）不再需要望远镜观看。到1月19日，在距离西班牙萨拉曼卡约20公里的地方，人们可以在这片几乎没有光污染的乡村天空中用肉眼看到它。尽管如此，望远镜图像仍然需要显示彗星美丽的绿色彗发，短的白色尘埃尾巴和长长的离子尾巴的任何线索。它微弱的离子尾巴受到了最近太阳活动的冲击。1月12日，这名来自遥远奥尔特云的访客围着太阳转。现在正在扫荡牧夫座北部边界附近的恒星。2月2日，彗星ZTF离我们最近，距离我们美丽的星球只有2.4光分。
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Comet C/2022E3 (ZTF) no longer requires a telescope for viewing. By January 19, it could just be seen with the naked eye in this rural sky with little light pollution from a location about 20 kilometers from Salamanca, Spain. Still, telescopic images are needed to show any hint of the comet's pretty green coma, stubby whitish dust tail, and long ion tail. Its faint ion tail has been buffeted by recent solar activity. This visitor from the distant Oort cloud rounded the Sun on January 12. and is now sweeping through stars near the northern boundary of the constellation Bootes. Outward bound but still growing brighter, Comet ZTF makes its closest approach on February 2, coming to within about 2.4 light-minutes of our fair planet.
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