近日点附近的彗星C/2023 E1 ATLAS
(原标题: Comet C/2023 E1 ATLAS near Perihelion)
2023-07-14
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彗星C/2023 E1 （ATLAS）是在3月份被发现的，它是由美国宇航局资助的小行星对地撞击最后警报系统发现的另一颗彗星。7月1日，这颗阿特拉斯彗星到达了近日点，它离太阳最近。几天后，这颗用望远镜观测到的彗星在这张照片中被捕捉到，在遥远的小熊座北部的恒星背景下，这颗彗星呈现出一种淡绿色的昏迷和微弱的窄离子尾巴。这颗彗星离地球最近的距离还在后面。8月18日，这位内太阳系的访客离我们美丽的星球只有3光分左右的距离。根据其与黄道面的倾角和85年左右的轨道周期，C/2023 E1 （ATLAS）被认为是一颗哈雷彗星。
查看原文解释
Comet C/2023 E1 (ATLAS) was just spotted in March, another comet found by the NASA funded Asteroid Terrestrial-impact Last Alert System. On July 1 this Comet ATLAS reached perihelion, its closest approach to the Sun. Days later the telescopic comet was captured in this frame sporting a pretty greenish coma and faint, narrow ion tail against a background of stars in the far northern constellation Ursa Minor. This comet's closest approach to Earth is still to come though. On August 18 this visitor to the inner Solar System will be a mere 3 light-minutes or so from our fair planet. Based on its inclination to the ecliptic plane and orbital period of about 85 years C/2023 E1 (ATLAS) is considered a Halley-type comet.
© Dan Bartlett