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Table 3
Initial parameters, priors, and best solutions for the models fitted to the 
and the RVs.
| Parameter description | Parameter | Initial value | Prior | Mean of marginalised posterior PDFs with 68% confidence interval errors | |
|---|---|---|---|---|---|
| Squared exponential kernel | Quasi periodic kernel | ||||
Fit to  |
|||||
GP for  |
|||||
| GP amplitude |  |
Std( ) = 0.019 |
 |
0.0142 ± 0.0027 | 0.0142 ± 0.0028 |
| GP de-correlation timescale | τ | 73.1 | Fixed | 73.1 | 73.1 |
| GP scale of correlation | Γ | 2 | Fixed | – | 2 |
| GP rotation period | Prot | 36.55 | Fixed | – | 36.55 |
| Extra noise |  |
0.01 |  |
0.0100 ± 0.0017 | 0.0100 ± 0.0017 |
| Constant | Cte | 0 |  |
0.0017 ± 0.0031 | 0.0017 ± 0.0031 |
 high frequency residuals rms |
0.011 | 0.011 | |||
| Fit to RV | |||||
| GP for RV | |||||
| GP amplitude for RV | ARV | 2.5 |  |
2.3262 ± 0.4552 | |
| GP de-correlation timescale | τ | 73.1 | Fixed | 73.1 | |
| Offset, drift and noise | |||||
| Extra noise (m s−1) | sRV | 0.6 |  |
1.5315 ± 0.2531 | |
| Offset data before 06.2015 (m s−1) | off1 | −7.48 |  |
−4.0003 ± 4.3446 | |
| Offset data after 06.2015 (m s−1) | off2 | 37.97 |  |
40.6186 ± 2.0401 | |
| Polynomial linear (m s−1 days−1) | Poly1 | −8.46 10−3 |  |
−5.64 10−3 ± 2.56 10−3 | |
| Polynomial quadratic (m s−1 days−2) | Poly2 | −1.83 10−6 |  |
1.35 10−6 ± 0.38 10−6 | |
| TOI-402.01 | |||||
| Amplitude (m s−1) | K1 | 3.07 |  |
3.1079 ± 0.3515 | |
| Period (days) | P1 | 4.75642 |  |
4.75630 ± 0.00016 | |
| Transit time (BJDTDB − 2 400 000) | Tc1 | 58411.46200 |  |
58411.46201 ± 0.00088 | |
| eccentricity parametrisation | e cos ω1 | −3.52 10−2 |  |
0.1291 ± 0.0845 | |
| eccentricity parametrisation | e sin ω1 | 9.78 10−2 |  |
0.0751 ± 0.0897 | |
| Mass (M⊕) | 7.20 ± 0.81 (11.3%) | ||||
| Eccentricity | 0.17 ± 0.09 | ||||
| Semi-major axis (au) | 0.052 ± 0.001 | ||||
| TOI-402.02 | |||||
| Amplitude (m s−1) | K2 | 2.58 |  |
2.4819 ± 0.4679 | |
| Period (days) | P2 | 17.1784 |  |
17.1773 ± 0.0016 | |
| Transit time (BJDTDB − 2 400 000) | Tc2 | 58414.5501 |  |
58414.5501 ± 0.0013 | |
| Eccentricity parametrisation | e cos ω2 | −2.80 10−2 |  |
−0.0493 ± 0.0569 | |
| Eccentricity parametrisation | e sin ω2 | −2.07 10−1 |  |
−0.1551 ± 0.1197 | |
| Mass (M⊕) | 8.79 ± 1.68 (19.1%) | ||||
| Eccentricity | 0.19 ± 0.10 | ||||
| Semi-major axis (au) | 0.123 ± 0.002 | ||||
| RV residuals rms (m s−1) | 1.36 | ||||
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