Fig. 3

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Elliptical fit to the 2020 October 23 occultation observations (chords). This fit describes the limb of 2003 UY117 for the moment of the occultation on the sky plane, defined by the (f, g) axes. As two chords were derived from the same site (OSN90 and OSN150; Sierra Nevada Observatory), they are not distinguishable in the plot. Also shown is the chord for the nearest site to the south (CAHA220: Calar Alto Observatory, 2.2m telescope) and to the north (Cannet), both of which had a negative detection (“miss”). The gray shaded area is the 1σ uncertainty region of the derived ellipse.
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