图钦山-阿特拉斯彗星接近
(原标题: Comet Tsuchinshan-ATLAS Approaches)
2024-09-23
浏览次数: 19
当这颗已经很亮的彗星靠近时，会发生什么？乐观的预测是，彗星C/2023 A3 （Tsuchinshan-ATLAS）很快就可以用肉眼看到——尽管彗星未来的亮度很难预测，这颗彗星甚至可能在温暖的阳光下分裂。可以肯定的是，这颗彗星现在出乎意料地明亮，并将在本周晚些时候经过离太阳最近的地方（0.39天文单位），并在下个月初经过离地球最近的地方（0.47天文单位）。这张特色图片拍摄于5月下旬，当时是去年才发现的土宿山-阿特拉斯彗星，它几乎从两个遥远星系的前面经过。现在可以用双筒望远镜在清晨的天空中发现这颗彗星，它在太阳之前升起，而在接下来的几个星期里，它将在傍晚的天空中变亮。你的天空惊喜：APOD在你的生日上展示了什么照片？(1995后)
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What will happen as this already bright comet approaches? Optimistic predictions have Comet C/2023 A3 (Tsuchinshan–ATLAS) briefly becoming easily visible to the unaided eye -- although the future brightness of comets are notoriously hard to predict, and this comet may even break up in warming sunlight. What is certain is that the comet is now unexpectedly bright and is on track to pass its closest to the Sun (0.39 AU) later this week and closest to the Earth (0.47 AU) early next month. The featured image was taken in late May as Comet Tsuchinshan–ATLAS, discovered only last year, passed nearly in front of two distant galaxies. The comet can now be found with binoculars in the early morning sky rising just before the Sun, while over the next few weeks it will brighten as it moves to the early evening sky. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)
© Brian Valente & Greg Stein