介绍西村彗星
(原标题: Introducing Comet Nishimura)
2023-08-21
浏览次数: 16
西村彗星能用肉眼看到吗？考虑到彗星的不可预测性，没有人能肯定地说，但目前看来这是一个不错的选择。这颗彗星是10天前由西村秀夫用标准数码相机曝光30秒后发现的。从那以后，C/2023 P1西村的亮度增加了，它穿过内太阳系的路径也被确定了。随着彗星向太阳俯冲，它肯定会继续加强，并可能在9月初成为一个肉眼可见的物体。一个问题是，这颗彗星也将以一定角度靠近太阳，所以只有在日落或日出时才有可能看到它。这颗彗星将非常接近太阳——在水星的轨道内——以至于它的彗核可能会分裂。这是西村彗星三天前在美国加州的六月湖拍摄的照片，当时它有一个绿色的彗发和一条细尾巴。
查看原文解释
Will Comet Nishimura become visible to the unaided eye? Given the unpredictability of comets, no one can say for sure, but it currently seems like a good bet. The comet was discovered only ten days ago by Hideo Nishimura during 30-second exposures with a standard digital camera. Since then, C/2023 P1 Nishimura has increased in brightness and its path across the inner Solar System determined. As the comet dives toward the Sun, it will surely continue to intensify and possibly become a naked-eye object in early September. A problem is that the comet will also be angularly near the Sun, so it will only be possible to see it near sunset or sunrise. The comet will get so close to the Sun -- inside the orbit of planet Mercury -- that its nucleus may break up. Pictured, Comet Nishimura was imaged three days ago from June Lake, California, USA while sporting a green coma and a thin tail.
© Dan Bartlett