月神山-ATLAS 彗星飛走了
Comet Tsuchinshan-ATLAS Flys Away
來源：Xingyang Cai｜發表日期：2024-10-19
這六幅圖片記錄了彗星 C/ 2023 A 3 Tsuchinshan-ATLAS 在過去一週遠離我們地球時的日常景象。這些影像是在指定日期和地點用同一臺相機和鏡頭從地球上的加利福尼亞拍攝的。 10 月 12 日，最右邊的這顆來自遙遠奧爾特雲的天外來客正接近它的最近距離，大約 7000 萬公里（約 4 光分）。它明亮的彗尾和長長的塵埃尾在天空中接近落日，但在明亮的西方地平線上仍然很容易被發現。在接下來的幾天裡，這顆出軌彗星穩步爬升到黃道上方，向北進入更暗的西方夜空，但開始從視野中消失。在 10 月 14 日左右越過地球軌道面時，"一山-ATLAS "呈現出明顯的反尾，向西方地平線延伸。到 10 月 17 日日落時分，彗星出現在更高的晚霞中（最左側），已經逐漸消失，與地球的距離約為 7700 萬公里。希望您能欣賞到 "月琴山-ATLAS "爭奪 2024 年最佳彗星的部分過程。這顆彗星最初的軌道週期估計只有 8 萬年，但事實上它可能永遠不會返回太陽系內部。 成長相簿： 2024 年的月神山-ATLAS 彗星
原文：These six panels follow daily apparitions of comet C/2023 A3 Tsuchinshan-ATLAS as it moved away from our fair planet during the past week. The images were taken with the same camera and lens at the indicated dates and locations from California, planet Earth. At far right on October 12 the visitor from the distant Oort cloud was near its closest approach, some 70 million kilometers (about 4 light-minutes) away. Its bright coma and long dust tail were close on the sky to the setting Sun but still easy to spot against a bright western horizon. Over the following days, the outbound comet steadily climbs above the ecliptic and north into the darker western evening sky, but begins to fade from view. Crossing the Earth's orbital plane around October 14, Tsuchinshan-ATLAS exhibits a noticeable antitail extended toward the western horizon. Higher in the evening sky at sunset by October 17 (far left) the comet has faded and reached a distance of around 77 million kilometers from planet Earth. Hopefully you enjoyed some of Tsuchinshan-ATLAS's bid to become the best comet of 2024. This comet's initial orbital period estimates were a mere 80,000 years, but in fact it may never return to the inner Solar System. Growing Gallery: Comet Tsuchinshan-ATLAS in 2024
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。