Fig. 1
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Change in the normalized cross section of the illuminated area for three selected comet shapes (67P/C-G, 81P/Wild 2, and 103P/Hartley 2) and the sphere at five different obliquities (0°, 30°, 45°, 60°, 90°, and their real obliquity and arguments except for the sphere) with distance in au from perihelion (on a 67P/C-G-like orbit, perihelion occurs at 1.24 au).
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