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Table 1

Model parameters of KMT-2021-BLG-1968.

Parameter 2L1S (close) 2L1S (wide) 1L2S
χ2/dof 7356.9/7360 7357.8/7360 7359.9/7360
t0 (HJD′) 9429.849 ± 0.004 9429.848 ± 0.003 9429.781 ± 0.005
u0 (10−3) 10.15 ± 0.54 10.41 ± 0.50 11.10 ± 0.52
t0,2 (HJD′) 9430.245 ± 0.009
u0,2 (10−3) 4.36 ± 0.41
tE (days) 20.65 ± 1.02 20.27 ± 0.93 20.18 ± 0.79
s 0.618 ± 0.017 1.662 ± 0.056
q(10−3) 3.08 ± 0.37 3.14 ± 0.47
α (rad) 3.587 ± 0.008 3.592 ± 0.012
ρ (10−3) <4 <4
ρ= (10−3)
qF 0.123 ± 0.015

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