The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc

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Table 6

Derived planetary parameters obtained for the HD 260655 system using the posterior values from the joint fit in Table 5 and stellar parameters from Table 2.

Parameter ^(a)	HD 260655 b	HD 260655 c
Derived transit parameters
p = R_p/R_*	0.02586 ± 0.00046	0.0320 ± 0.0010
b = (a/R_*) cos i_p
a/R_*	14.43 ± 0.29	23.37 ± 0.47
i_p (deg)	87.35 ± 0.14	87.79 ± 0.08
t_T (h) ^(b)	1.15 ± 0.02	0.98 ± 0.02
Derived physical parameters
M_p (M_⊕)	2.14 ± 0.34	3.09 ± 0.48
R_p (R_⊕)	1.240 ± 0.023
ρ_p (g cm⁻³)	6.2 ± 1.0
g_p (m s⁻²)	13.7 ± 2.2	12.9 ± 2.2
a_p (au)	0.02933 ± 0.00024	0.04749 ± 0.00039
T_eq (K) ^(c)	709 ± 4	557 ±3
S (S_⊕)	42.2 ± 0.7	16.1 ± 0.3

Notes. ^(a)Error bars denote the 68% posterior credibility intervals.

^(b) Transit duration as measured from the first to the last contact.

^(c) Equilibrium temperatures were calculated assuming zero Bond albedo and perfect energy redistribution.

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