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February 18
[edit]Hello. Can Wikipedia assist in checking the details of this Scientific journal?
https://link.springer.com/content/pdf/10.1007/BF00054033.pdf
I would like to request for a check on what the authors are referring to when they mentioned the "Eastern Hathor Basin" (page 43/ PDF page 9/19). Looking at the map of Ganymede, the maps of the basin, and based on the latitude and longitude given of 69deg S, 265deg W, I think what they are calling "Eastern Hathor Basin" is actually Hathor Basin itself, and they mislabeled the crater. Therefore, the correct name of the subject should have been called "Eastern Teshub Basin". (see map below)
Thank you so much. IapetusCallistus (talk) 16:03, 18 February 2026 (UTC)[reply]
The Lunar and Planetary Institute's Ganymede Crater Database, has Hathor (123 km, -70deg/267deg) and Hathor 'A' (-72deg/281deg), their imagemap to find by location is awful tho. Would 'basin' and 'crater' imply the same feature? USGS Astropedia has Ganymede Geologic Map of the Hathor Region (which labels Hathor but few others). fiveby(zero) 16:39, 18 February 2026 (UTC)[reply]The third basin (-69", 265") lies east of the Hathor basin (it is named Eastern Hathor in this paper)
- Teshub in the image above labels the same location as Hathor 'A' in the database. Here you can see a combination of the images from the database for Hathor and Hathor 'A'. The left edge of the Hathor image cuts right through the middel of Hathor 'A'. --Lambiam 23:13, 18 February 2026 (UTC)[reply]
- I think the LPI database -70deg latitude is wrong, List of craters on Ganymede has -66.9degS and links to this USGS embeded map which is scrollable and shows coordinates. Maybe an impact basin at -69,265 ??? fiveby(zero) 00:27, 19 February 2026 (UTC)[reply]
- I think one problem here might be that the paper and LPI database are pre-Galileo. It's possible the planetary coordinate system for Ganymede has been updated or the Voyager images have been better located. Don't know if we can trust the coordinates in the paper. fiveby(zero) 00:53, 19 February 2026 (UTC)[reply]
- I think the LPI database -70deg latitude is wrong, List of craters on Ganymede has -66.9degS and links to this USGS embeded map which is scrollable and shows coordinates. Maybe an impact basin at -69,265 ??? fiveby(zero) 00:27, 19 February 2026 (UTC)[reply]
- Teshub in the image above labels the same location as Hathor 'A' in the database. Here you can see a combination of the images from the database for Hathor and Hathor 'A'. The left edge of the Hathor image cuts right through the middel of Hathor 'A'. --Lambiam 23:13, 18 February 2026 (UTC)[reply]
- Figure 7 in the paper "Geology of large impact craters on Ganymede" shows a dark and unclear photograph of what the authors have dubbed "the Eastern Hathor basin", taken under an unspecified angle, together with a clarifying line drawing, likewise distorted by perspective, identifying the smooth interior and post-impact craters with hand-drawn ellipses. I rescaled this drawing so that ellipses became more circular (but no scale factor worked uniformly well) and rotated it to make
|N point upwards, so as to align with the direction of the (rotated) section of a colour photograph of the south polar region shown in the OP. (The original can be found on the USGS's "Controlled Color Photomosaic Map of Ganymede", which can be downloaded from here.) Then I searched the photograph to see if I could spot the pattern of the post-impact craters in that photograph, but no luck. In any case, it does not resemble the direct environment of the Hathor basin in that photograph. The result of rescaling + rotating can be seen here; the post-impact craters are highlighted in yellow. Perhaps others will have more luck. --Lambiam 13:52, 19 February 2026 (UTC)[reply]- Thank you for reconstructing the diagram in Figure 7. I can clearly see that it is indeed Hathor crater.
- Do you think this is conclusive proof that the subject is really Hathor crater? IapetusCallistus (talk) 15:15, 19 February 2026 (UTC)[reply]
- I did not see the resemblance, but now I see it if I assume
|N in the drawn diagram is off from due north by some 30deg, and then the similarity can hardly be a coincidence. You can see a side-by-side comparison of the rescaled and rotated diagram with a cut-out of the USGS's south polar map, with the basin and most of the post-impact craters similarly coloured, here. --Lambiam 18:58, 21 February 2026 (UTC)[reply]
- I did not see the resemblance, but now I see it if I assume
