Tweet The animated image below provides strong evidence that Philae touched down for the first time almost precisely where intended, a strong testament to the precision of the flight dynamics teams who planned Philae's journey down to comet 67P/C-G. (This post was updated on 15.11.2014 with a revised version of the animated image from the flight dynamics team.) It subsequently rebounded and, after touching down a second time, came to rest where it is now – a still unconfirmed location likely outside of these images. The animation comprises images recorded by the navigation camera (NAVCAM) on board Rosetta as the orbiter flew over the (intended) Philae landing site on 12 November. The images were taken at 2014-11-12 T15:30:32 UTC 2014-11-12 T15:35:32 UTC The landing time was 2014-11-12 T15:34:06 UTC onboard the spacecraft, between the timestamps of the two images. The first image is thus 3 min 34 sec before touchdown. At this time, Philae was approximately 250m above the surface. The second image is 1 min 26 seconds after first touchdown. The touchdown is seen as a dark area. This dark area could be considered as strong indication that the lander touched down at this spot (possibly raising dust from the impact). Both images are shown below, together with a third image, which is the same as the second, but also shows a green square; this is the predicted touch-down point after re-construction of the lander descent trajectory using various NAVCAM, OSIRIS WAC and OSIRIS NAC images. They were taken from a distance of about 15 km from the surface, giving an approximate scale of 1.3 m per pixel. The dark spot appears to be within less than 10 m of the computed touchdown point. You can also clearly see the boulder identified in the ROLIS images just to the top right […]
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