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Table 5.

Adopted light curve solution for V643 Ori.

Parameter Primary Secondary
Ω
rpole 0.1604 ± 0.0024 0.2021 ± 0.0015
rpoint 0.1616 ± 0.0025 0.2101 ± 0.0018
rside 0.1609 ± 0.0024 0.2044 ± 0.0016
rback 0.1615 ± 0.0025 0.2086 ± 0.0017
rvol 0.1610 ± 0.0024 0.2052 ± 0.0016
rRoche 0.429 0.330

R2/R1 1.275 ± 0.018
i (deg)
Teff, 1 (K) 5210 (fixed)
Teff, 2 (K)
ΔTeff (K) 748 ± 51

Parameter u v b y

u1 (fixed) 0.939 0.922 0.795 0.674
u2
2/ℓ1 0.370 ± 0.010 0.445 ± 0.009 0.546 ± 0.010 0.616 ± 0.012
Δϕ
m0 (mag)
fσ
σ (mag) 0.0260 0.0151 0.0135 0.0134

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