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Table A.1

List of parameters used in the classical analysis.

Parameter model Prior Posterior (median and 68.3% C.I.)
2019 2019 + 2022
Rossiter-McLaughlin model parameters
Period Pd [d] fixed 278.3618
Transit epoch 2019 T0,19 [BJD - 2400000] 𝒩(58836.4318, 0.0833) 58836.4195 ± 0.0271 58836.4169 ± 0.0249
Transit epoch 2022 T0,22 [BJD - 2400000] 𝒩(59671.5049, 0.0833) 59671.5279 ± 0.0634
Semi-major axis [R*] fixed 147.03
Orbital inclination ip [°] fixed 89.81
Projected obliquity λ [°] 𝒰(−90, 360) 4044+45$40_{ - 44}^{ + 45}$ 4637+28$46_{ - 37}^{ + 28}$
Eccentricity [°] fixed 0
Limb darkening coefficient ua fixed 0.315
Limb darkening coefficient ub fixed 0.304
Width of the non-rotating line profile β0 [km s−1] fixed 3.2375
Stellar equatorial velocity v sin i* [ km s−1] 𝒩(5.5, 1) 5.9 ± 1.4 3.8 ± 1.0
Width of the CCF σ0 [km s−1] fixed 4.5864
Planet radius Rp [R*] fixed 0.0253
Stellar radius R* [R] fixed 1.28

Instrumental parameters
Jitter HARPS-N 2019 [m s−1] 𝒰(0, 10) 0.63 ± 0.56 0.68 ± 0.59
Jitter HARPS-N 2022 [ m s−1] 𝒰(0, 10) 1.08 ± 0.78
Jitter ESPRESSO 2022 [ m s−1] 𝒰(0, 10) 0.56 ± 0.17
Offset HARPS-N 2019 [ m s−1] 𝒰(50000, 51000) 53198.08 ± 0.75 5 197.72 ± 0.68
Offset HARPS-N 2022 [ m s−1] 𝒰(50000, 51000) 53193.55 ± 12.57*
Offset ESPRESSO 2022 [m s−1] 𝒰(50000, 51000) 50600.73 ± 12.54*

Gaussian Process parameters
coefficient 𝒰(0, 100) 4.0 ± 1.8
coefficient A 𝒰(0, 100) 158+32$15_{ - 8}^{ + 32}$

* The relative offset between HARPS-N and ESPRESSO in 2022 is < 1 m s−1.

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