日出前的狄摩斯
Deimos Before Sunrise

發表日期:2025-05-24
狄摩斯號繞紅色星球執行一圈需要 30 小時 18 分鐘。這比一個火星日(約 24 小時 40 分鐘)多一點,因此狄莫斯在火星天空中向西漂移。它的最寬處約 15 公里,是火星兩顆衛星中最小的一顆,但也很明亮。事實上,在 3 月 1 日,也就是火星探測器執行任務的第 1433 個太陽之前,"毅力 "號拍攝的這幅火星天景圖中,狄摩斯是最亮的天體。該影像由火星車的一臺導航相機記錄的 16 次曝光組成。這些單獨的曝光被合併成一張影像,以增強弱光下的視野。在火星黎明前的黑暗天空中,還可以看到獅子座的明亮恆星軒轅和阿爾吉巴。
原文:Deimos takes 30 hours and 18 minutes to complete one orbit around the Red Planet. That's a little more than one Martian day or sol which is about 24 hours and 40 minutes long, so Deimos drifts westward across the Martian sky. About 15 kilometers across at its widest, the smallest of Mars' two moons is bright though. In fact Deimos is the brightest celestial object in this Martian skyscape captured before sunrise by Perseverance on March 1, the 1,433rd sol of the Mars rover's mission. The image is a composed of 16 exposures recorded by one of the rover's navigation cameras. The individual exposures were combined into a single image for an enhanced low light view. Regulus and Algeiba, bright stars in the constellation Leo, are also visible in the dark Martian predawn sky.
※ 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。