Fig. 6

Same as Fig. 4, but in the K and KS bands (λC = 2.20 and 2.25 μm, respectively). All comet data with the exception of those for C/2013 US10 (Catalina) (Kwon et al. 2017) and 252P are quoted from the DOCP. The best fit (minimum χ2) parameters weighted by the square of the errors in K and KS bands are b = 31.47 ± 0.18%, c1 = 0.65 ± 0.06, c2 = (6.55 ± 0.18) × 10-10, and α0 = 16.97° ± 0.44°.
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