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Fig. 1.

image

Heliocentric (thin red curve) and geocentric (green curve) distance of K2 during the time interval given in Table 1. The time distribution of positional observations of K2 with corresponding heliocentric distance at which they were taken is shown with red dots. The geocentric distances of measurements are shown with green dots but they are almost covered by red dots because of similarly large distances from the Sun and the Earth.

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