Copyright:Team Ciel Austral
中文翻譯:
在遙遠的太陽系外，一顆新的訪客——彗星C/2025 R2 (SWAN)，又叫SWAN25B，最近才被發現！這顆彗星在9月11日被首次看到，那天剛好是在它最近接近太陽的前一天。彗星是由弗拉基米爾·貝祖格利（Vladimir Bezugly）用太空船SOHO上觀察太陽的SWAN儀器拍到的影像。它的亮度讓人驚訝，但因為太陽的耀眼光芒，看到它有點困難。直到9月17日，我們終於捕捉到了它的影像，彗星的綠色彗發和尾巴在天空中閃爍。畫面左上角的天狼星是處於處女座的明亮星星，而這顆彗星距離地球約6.5光分鐘。彗星在南半球的西邊地平線上，日落後稍微容易用雙筒望遠鏡觀察到。10月2日，它將靠近天秤座的阿爾法星Zubenelgenubi。C/2025 R2 (SWAN)預計會在10月20日最接近我們的星球。
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.
來源:NASA每日圖片
