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Table 4.

Model parameters of KMT-2021-BLG-1643.

Parameter Close Wide
χ2/d.o.f. 1632.6/1585 1594.3/1585
t0 (HJD′) 9405.996 ± 0.051 9405.747 ± 0.093
u0 (10−2) 5.316 ± 0.094 5.156 ± 0.278
tE (days) 104.02 ± 1.98 105.53 ± 5.38
s 0.6866 ± 0.0023 1.5156 ± 0.0230
q 0.0790 ± 0.0024 0.0825 ± 0.0055
α (rad) 0.7453 ± 0.0058 0.7186 ± 0.0159
ρ (10−3) 0.284 ± 0.044 0.297 ± 0.027

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