一颗彗星和两只北斗七星
(原标题: A Comet and Two Dippers)
2023-02-07
浏览次数: 16
你还能看见那颗彗星吗？是。即使C/2022 E3 （ZTF）逐渐消失，如果你知道在哪里和什么时候去看，你仍然有时间去看它。从几何上看，ZTF彗星已经经过了离太阳和地球最近的地方，现在正朝着外太阳系飞去。它围绕太阳的轨道使它在上个月经过北极星和大北斗七星和小北斗七星附近后，整个月都在北方的天空中滑行。1月下旬，ZTF彗星在两个冲星之间被拍到，它的离子尾巴延伸了10度以上。现在在裸眼可见之下，ZTF彗星可以用双筒望远镜或小型望远镜和一张好的天空图找到。下周观看彗星的最佳时间是在太阳落山之后，但在月亮升起之前。几天后，这颗彗星将接近火星的前方。彗星ZTF画廊：向APOD提交的重要文件
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Can you still see the comet? Yes. Even as C/2022 E3 (ZTF) fades, there is still time to see it if you know where and when to look. Geometrically, Comet ZTF has passed its closest to both the Sun and the Earth and is now headed back to the outer Solar System. Its orbit around the Sun has it gliding across the northern sky all month, after passing near Polaris and both the Big and Little Dippers last month. Pictured, Comet ZTF was photographed between the two dippers in late January while sporting an ion tail that extended over 10 degrees. Now below naked-eye visibility, Comet ZTF can be found with binoculars or a small telescope and a good sky map. A good time to see the comet over the next week is after the Sun sets -- but before the Moon rises. The comet will move nearly in front of Mars in a few days Comet ZTF Gallery: Notable Submissions to APOD
© Petr Horalek / Institute of Physics in Opava