Comet C/ 2025 R 2 (SWAN)
Comet C/2025 R2 (SWAN)
來源：Team Ciel Austral｜發表日期：2025-09-18
來自太陽系外的新訪客--C/ 2025 R 2 （SWAN）彗星，又稱 SWAN 25 B，上週末，即 9 月 11 日才被發現。就在彗星到達近日點的前一天，也就是最接近太陽的一天。這顆彗星由弗拉基米爾-貝祖格萊（Vladimir Bezugly）在盯著太陽的 SOHO 太空飛行器上的 SWAN 儀器拍攝的影像中首次發現，它出奇地明亮，但在太陽的強光下很難看到，這也是可以理解的。在這張 9 月 17 日的望遠鏡快照中，C/ 2025 R 2 （SWAN）的綠色彗尾和尾部仍然緊貼著天空中的太陽。彗星距離地球約 6 . 5 光分，室女座的α星斯畢卡（Spica）就在畫面的左上方閃耀。這顆 SWAN 彗星將於 10 月 2 日在天秤座 alpha 星 Zubenelgenubi 附近擦過。 C/ 2025 R 2 （SWAN）計劃於 10 月 20 日左右最接近我們的地球。
原文：A new visitor from the outer Solar System, comet C/2025 R2 (SWAN) also known as SWAN25B was only discovered late last week, on September 11. That's just day before the comet reached perihelion, its closest approach to the Sun. First spotted by Vladimir Bezugly in images from the SWAN instrument on the sun-staring SOHO spacecraft, the comet was surprisingly bright but understandably difficult to see against the Sun's glare. Still close to the Sun on the sky, the greenish coma and tail of C/2025 R2 (SWAN) are captured in this telescopic snapshot from September 17. Spica, alpha star of the constellation Virgo, shines just beyond the upper left edge of the frame while the comet is about 6.5 light-minutes from planet Earth. Near the western horizon after sunset and slightly easier to see in binoculars from the southern hemisphere, this comet SWAN will pass near Zubenelgenubi, alpha star of Libra, on October 2. C/2025 R2 (SWAN) is scheduled to make its closest approach to our fair planet around October 20.
※ 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！
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