Fig. 1
Left: co-added images obtained during the ingress in the K-band with the Carlos Sánchez Telescope (Observatorio del Teide, Tenerife, Canary Islands; SCHMAS). North is towards the lower left and East towards the lower right. The bright feature near the south pole transiting the central meridian is the spot left by the impact of an asteroid or comet on July 19th. Right: co-added images for Egress. Note that the impact spot has rotated towards the western limb of the planet.
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