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Table A.4

Parameters used in the analysis.

Parameter Prior Posterior

Dartmouth PARSEC
Stellar parameters
Effective temperature Teff [K]
Surface gravity log g [cgs]
Metallicity [M/H] [dex]
Distance to Earth D [pc]
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 ρρ (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 - 2 450 000]
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 abR (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 - 2 450 000]
Radial velocity semi-amplitude Kc [km s−1 ]
Orbital inclination ic [°]
Planet-to-star radius ratio kc
Orbital eccentricity ec
Argument of periastron ωc [°]
System scale acR (Derived)
Impact parameter bc (Derived)
Transit duration14,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]
Transit epoch T0,d [BJD - 2 450 000]
Radial velocity semi-amplitude Kd [km s−1 ] 0.00303 ± 0.00052 0.00303 ± 0.00051
Orbital inclination id [°]
Planet-to-star radius ratio kd
Orbital eccentricity ed
Argument of periastron ωd [°]
System scale adR (Derived)
Impact parameter bd (Derived)
Transit duration T14,d [h] (Derived)
Semi-major axis ad [AU] (Derived)
Planet mass Md [M ] (Derived)
Planet radius Rd [R ] (Derived)
Planet bulk density ρd [g cm−3] (Derived)

Planet e parameters
Orbital period Pe [d]
Transit epoch T0,e [BJD - 2 450 000]
Radial velocity semi-amplitude Ke [km s−1 ]
Orbital inclination ie [°]
Planet-to-star radius ratio ke
Orbital eccentricity ee
Argument of periastron ωe [°]
System scale aeR (Derived)
Impact parameter be (Derived)
Transit duration T14,e [h] (Derived) 2.97 ± 0.05 2.97 ± 0.05
Semi-major axis ae [AU] (Derived)
Planet mass Me [M ] (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 - 2 450 000]
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 afR (Derived)
Impact parameter bf (Derived)
Transit duration T14,f [h] (Derived) 3.20 ± 0.08 3.20 ± 0.08
Semi-major axis af [AU] (Derived)
Planet mass Mf [M ] (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 - 2 450 000]
Radial velocity semi-amplitude Kg [km s−1 ]
Orbital inclination ig [°]
Planet-to-star radius ratio kg
Orbital eccentricity eg
Argument of periastron ωg [°]
System scale agR (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 σjRV [km s−1 ]
K2 contamination [%]
K2 jitter σj, K2 [ppm] 185.8 ± 2.6 186.0 ± 2.6
K2 out-of-transit flux
SED jitter [mag]

Gaussian process hyperparameters
Radial-velocities (joint analysis)
A2 [m s−1 ]
λ1 [d]
λ2 1.88 ± 0.79 1.72 ± 0.88
Prot [d] 25.5 ± 1.7
Photometry (learning on the light curve for activity filtering)
A1 0.00293 ± 0.00032
l[d] 1.444 ± 0.056
Photometry (period learning on the light curve)
A2 0.00315 ± 0.00044
λ1 [d]
Prot [d]
Full width half maximum (period learning on the FWHM time series)
A2 [km s−1 ]
λ1 [d]
Prot [d]
Bisector inverse slope (period learning on the BIS time series)
A2 [km s−1 ]
λ1 [d]
λ2 453 ± 380
Prot [d] 22 ± 13
Hα index (period learning on the Hα index time series)
λ1 [d] 737 ± 260
Prot [d]
NaI D index (period learning on the NaI D index time series)
λ1 [d] 10.8 ± 2.7
λ2 435 ± 390
Prot [d] 22 ± 12
SMW index (period learning on the SMW index time series)
λ1 [d] 7.7 ± 1.7
λ2 482 ± 360
Prot [d] 23 ± 12

Notes. The respective priors are provided together with the posteriors for the Dartmouth and PARSEC stellar evolution tracks. The posterior values represent the median and 68.3% credible interval. Derived values that might be useful for follow-up work are also reported. : 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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