Open Access

Table A.1

List of parameters used in the analysis. The priors are provided together with the posteriors. The posterior values represent the median and 68.3% credible interval. Derived values that might be useful for follow-up work are also reported.

Parameter Prior Posterior
Stellar Parameters
Effective temperature Teff [K]
Surface gravity log g [cgs]
Iron abundance [Fe/H] [dex] 0.07 ± 0.05
Distance to Earth D [pc] 201.5 ± 1.9
Interstellar extinction E(BV) [mag]
Systemic radial velocity γ [km s−1]
Linear limb-darkening coefficient ua (derived)
Quadratic limb-darkening coefficient ub (derived)
Stellar density ρ/ρ (derived)
Stellar mass M [M] (derived)
Stellar radius R [R] (derived)
Stellar age τ [Gyr] (derived)

Planet b Parameters
Orbital Period Pb [d]
Transit epoch T0,b [BJD − 2450000]
Radial velocity semi-amplitude Kb [km s−1]
Orbital inclination ib [°]
Planet-to-star radius ratio kb
Orbital eccentricity eb
Argument of periastron ωb [°]
System scale ab/R (derived)
Impact parameter bb (derived)
Transit duration T14,b [h] (derived)
Semi-major axis ab [AU] (derived)
Planet mass Mb [M] (derived)
Planet radius Rb [R] (derived)
Planet bulk density ρb [g cm−3] (derived)

Planet c Parameters
Orbital Period Pc [d]
Transit epoch T0,c [BJD - 2450000]
Radial velocity semi-amplitude Kc [kms−1]
Orbital inclination ic [°]
Planet-to-star radius ratio kc
Orbital eccentricity ec
Argument of periastron ωc [°]
System scale ac/R (derived) 11.3 ± 0.2
Impact parameter bc (derived)
Transit duration T14,c [h] (derived)
Semi-major axis ac [AU] (derived)
Planet mass Mc [M] (derived)
Planet radius Rc [R] (derived)
Planet bulk density ρc [g cm−3] (derived)

Planet d Parameters
Orbital Period Pd [d] 5.40479 ± 0.00021
Transit epoch T0,d [BJD - 2450000]
Radial velocity semi-amplitude Kd [km s−1] 0.00285 ± 0.00055
Orbital inclination id [°]
Planet-to-star radius ratio kd
Orbital eccentricity ed
Argument of periastron ωd [°]
System scale ad/R (derived) 15.0 ± 0.3
Impact parameter bd (derived)
Transit duration T14,d [h] (derived)
Semi-major axis ad [AU] (derived)
Planet mass Md] (derived)
Planet radius Rd [R] (derived)
Planet bulk density ρd [g cm−3] (derived) 3.2 ± 0.7

Planet e Parameters
Orbital Period Pe [d]
Transit epoch T0,e [BJD - 2450000]
Radial velocity semi-amplitude Ke [kms−1]
Orbital inclination ie [°]
Planet-to-star radius ratio ke
Orbital eccentricity ee
Argument of periastron ωe [°]
System scale ae/R (derived)
Impact parameter be (derived)
Transit duration T14,e [h] (derived) 2.97 ± 0.05
Semi-major axis ae [AU] (derived)
Planet mass Me] (derived)
Planet radius Re [R] (derived)
Planet bulk density ρe [g cm−3] (derived)

Planet f Parameters
Orbital Period Pf [d]
Transit epoch T0,f [BJD - 2450000]
Radial velocity semi-amplitude Kf [km s−1]
Orbital inclination if [°]
Planet-to-star radius ratio kf
Orbital eccentricity ef
Argument of periastron ωf [°]
System scale af/R (derived) 26.5 ± 0.5
Impact parameter bf (derived)
Transit duration T14,f [h] (derived) 3.20 ± 0.08
Semi-major axis af [AU] (derived)
Planet mass Mf] (derived)
Planet radius Rf [R] (derived)
Planet bulk density ρf [g cm−3] (derived)

Planet g Parameters
Orbital Period Pg [d]
Transit epoch T0,g [BJD - 2450000]
Radial velocity semi-amplitude Kg [km s−1] Continued on next page
Orbital inclination ig [°]
Planet-to-star radius ratio kg
Orbital eccentricity eg
Argument of periastron ωg [°]
System scale ag/R (derived)
Impact parameter bg (derived)
Transit duration T14,g [h] (derived)
Semi-major axis ag [AU] (derived)
Planet mass Mg [M] (derived)
Planet radius Rg [R] (derived)
Planet bulk density ρg [g cm−3] (derived)

Instrument-related Parameters
HARPS jitter σj, RV [km s−1]
K2 contamination [%]
K2 jitter σj, K2 [ppm] 185.9 ± 2.7
K2 out-of-transit flux
SED jitter [mag]

Notes:

  • : Normal distribution with mean μ and width σ2

  • : Uniform distribution between a and b

  • : Sine distribution between a and b

  • : Truncated normal distribution with mean μ and width σ2, between a and b

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