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Table 2

1L2S lensing parameters of KMT-2021-BLG-2609.

Parameter ρ2 ≠ 0 ρ2 = 0
χ2 1726.7 1741.0
t0 (HJD′) 9498.498 ± 0.260 9498.468 ± 0.262
u0 1.088 ± 0.239 0.998 ± 0.276
tE (days) 13.74 ± 1.93 14.53 ± 2.33
t0,2 (HJD′) 9493.401 ± 0.032 9493.414 ± 0.021
u0,2 (10−3) −0.23 ± 6.25 9.47 ± 2.80
ρ2 (10−3) 19.73 ± 4.62
qF (10−3) 1.78 ± 0.74 2.62 ± 1.11

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