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File:Stacked image of Dimorphos true orientation.jpg

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原始文件 (5,792 × 5,792像素,文件大小:7.14 MB,MIME类型:image/jpeg


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English: Stacked image of Dimorphos from last images by the DART spacecraft. Copyright is not applicable for this image because NASA's images are in the public domain and the work is not original enough. Plus, it is trivial to just make a new stacked picture if this file is deleted.

The original DART/DRACO images shown in NASA's live stream were mirror-flipped from reality; this version corrects this issue. From DART's perspective, the Sun illumination direction comes from the right, shining down on Didymos and Dimorphos with an extra portion of their southern hemispheres exposed. (see Figure 2 of Rivkin et al. (2021) for a diagram of the Didymos system with the illumination, orbit, DART impact directions)

Ecliptic north points toward the top left corner of the image. Because the Didymos system rotates retrograde with respect to its heliocentric orbit, the rotational north pole of Didymos and Dimorphos points toward the bottom right corner of the image, opposite to the ecliptic north pole. When this image was taken, Dimorphos's orbital velocity was headed directly toward DART, which itself is moving directly toward Dimorphos for a head-on impact.
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来源 https://imgur.com/gallery/kOXnjQn, which uses NASA's imagery. The stacking of public domain images are not original enough to be copyrighted.
作者 Eydeet, using DART's satellite imagery by NASA
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Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
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当前2022年12月19日 (一) 06:102022年12月19日 (一) 06:10版本的缩略图5,792 × 5,792(7.14 MB)Nrco0eoriginal resolution
2022年12月18日 (日) 00:432022年12月18日 (日) 00:43版本的缩略图1,200 × 1,200(572 KB)Nrco0eUploaded a work by Eydeet, using DART's satellite imagery by NASA from https://imgur.com/gallery/kOXnjQn, which uses NASA's imagery. The stacking of public domain images are not original enough to be copyrighted. with UploadWizard

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