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“粉色欧派r头突出”-知识课堂

人类第11次粉色欧派r头突出成功预警小行星撞击 我国再次开展多站点组网观测

来源: 中国妇女报
2024-12-06 16:31:18

最佳回答

“粉色欧派r头突出”人类第11次粉色欧派r头突出成功预警小行星撞击 我国再次开展多站点组网观测

  记者粉色欧派r头突出从中国科学院紫金山天文台获悉粉色欧派r头突出,近日,人类第11次成功预警小行星撞击,这也是2024年第4次小行星撞击成功预警。

  这次事件我国处于监测的关键地理位置,星历表显示,我国天黑后就可以对这颗小行星进行后随观测。紫金山天文台组织姚安高精度测量平台口径0.8米望远镜、冷湖MASTA口径0.7米望远镜阵列及口径2.5米墨子巡天望远镜开展跟踪观测,最终观测到撞击前42分钟的图像。新疆星明天文台也利用其口径0.5米HMT望远镜和口径0.28米GY7望远镜开展了观测。

  根据国际小行星中心汇集的全球观测数据,在小行星抵近过程中,紫金山天文台预测其进入大气层时间2024/12/03 16:15 UTC,位置60.80N,118.98E,计算结果与国际小行星中心公告结果相当。

  据了解,这颗小行星直径约0.75米~1米,是由亚利桑那大学博克2.3米望远镜最早于2024/12/03 05:55:16 UTC(世界时)发现,该目标以临时名称C0WEPC5提交至近地小行星待确认页。

  随后美国及夏威夷多个天文台进行了后随观测,根据最初约3小时的16个观测数据,欧空局ESA给出了撞击预测,这颗小行星将于2024/12/03 16:155 UTC(北京时间2024/12/04 00:155)在西伯利亚(61.01N,119.98E)上空进入大气层。根据俄罗斯的监测视频显示当天16:14:53 UTC一颗明亮的火流星如期而至。

  撞击发生2小时后,国际小行星中心共计收到全球64个观测数据,发布正式公告给这颗小行星编号为2024 XA1,并更新了小行星进入大气层的预期位置60.5N, 119.0E。这是人类第11次成功预警小行星撞击。

  小行星撞击预警的成功案例日益增加,得益于全球近地小行星监测预警能力的不断提升。紫金山天文台长期致力于近地小行星的监测预警方法研究和业务化运行能力提升,并积极论证下一代近地天体监测预警网建设,开展威胁预警、进入过程监测以及陨落物分析等全链研究,系统性提高我国近地小行星监测预警能力。

  (总台央视记者 帅俊全 褚尔嘉)

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