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Table 2

Summary of EXOFASTv2 fitted and derived parameters with 68% confidence interval for TOI-6651 system.

Parameter Description Value (ℙ = 58.67%)(1) Value (ℙ = 41.33%)(1)
Stellar Parameters:
M* Mass (M⊙) 1.323−0.045+0.050$\[1.323_{-0.045}^{+0.050}\]$ 1.168−0.042+0.036$\[1.168_{-0.042}^{+0.036}\]$
R* Radius (R⊙) 1.721−0.062+0.065$\[1.721_{-0.062}^{+0.065}\]$ 1.772−0.066+0.067$\[1.772_{-0.066}^{+0.067}\]$
L* Luminosity (L⊙) 3.33−0.12+0.11$\[3.33_{-0.12}^{+0.11}\]$ 3.30−0.13+0.12$\[3.30_{-0.13}^{+0.12}\]$
ρ* Density (cgs) 0.366−0.037+0.045$\[0.366_{-0.037}^{+0.045}\]$ 0.296−0.032+0.035$\[0.296_{-0.032}^{+0.035}\]$
log g Surface gravity (cgs) 4.087−0.032+0.035$\[4.087_{-0.032}^{+0.035}\]$ 4.008−0.035+0.033$\[4.008_{-0.035}^{+0.033}\]$
Teff Effective temperature (K) 5940 ± 110 5840 ± 110
[Fe/H] Metallicity (dex) 0.225−0.045+0.044$\[0.225_{-0.045}^{+0.044}\]$ 0.212−0.046+0.045$\[0.212_{-0.046}^{+0.045}\]$
Age Age (Gyr) 3.71−0.78+0.68$\[3.71_{-0.78}^{+0.68}\]$ 6.60−0.79+1.1$\[6.60_{-0.79}^{+1.1}\]$
EEP Equal Evolutionary Phase 401−21+14$\[401_{-21}^{+14}\]$ 452.2−5.1+5.4$\[452.2_{-5.1}^{+5.4}\]$
AV V-band extinction (mag) 0.109−0.043+0.024$\[0.109_{-0.043}^{+0.024}\]$ 0.096−0.049+0.032$\[0.096_{-0.049}^{+0.032}\]$
σSED SED photometry error scaling 0.335−0.080+0.13$\[0.335_{-0.080}^{+0.13}\]$ 0.345−0.083+0.13$\[0.345_{-0.083}^{+0.13}\]$
v sin i* Projected rotational velocity(2) (km s−1) 4.88 ± 0.14 4.88 ± 0.14
Planetary Parameters:
P Period (days) 5.056973−0.000018+0.000016$\[5.056973_{-0.000018}^{+0.000016}\]$ 5.056973−0.000018+0.000016$\[5.056973_{-0.000018}^{+0.000016}\]$
RP Radius (R⊕) 5.09−0.26+0.27$\[5.09_{-0.26}^{+0.27}\]$ 5.31 ± 0.28
MP Mass (M⊕) 61.0−7.9+7.6$\[61.0_{-7.9}^{+7.6}\]$ 56.3−7.3+7.0$\[56.3_{-7.3}^{+7.0}\]$
TC Time of conjunction (BJDTDB) 2459857.7116 ± 0.0014 2459857.7116−0.0015+0.0014$\[2459857.7116_{-0.0015}^{+0.0014}\]$
a Semi-major axis (AU) 0.06330−0.00072+0.00078$\[0.06330_{-0.00072}^{+0.00078}\]$ 0.06073−0.00074+0.00062$\[0.06073_{-0.00074}^{+0.00062}\]$
i Inclination (Degrees) 84.93−0.46+0.63$\[84.93_{-0.46}^{+0.63}\]$ 84.09−0.48+0.50$\[84.09_{-0.48}^{+0.50}\]$
e Eccentricity 0.091−0.062+0.096$\[0.091_{-0.062}^{+0.096}\]$ 0.089−0.060+0.094$\[0.089_{-0.060}^{+0.094}\]$
ω* Arg of periastron (Degrees) 116−38+62$\[116_{-38}^{+62}\]$ 117−39+62$\[117_{-39}^{+62}\]$
Teq Equilibrium temp(3) (K) 1493−15+14$\[1493_{-15}^{+14}\]$ 1522 ± 15
K RV semi-amplitude (m/s) 18.9 ± 2.3 18.9−2.3+2.2$\[18.9_{-2.3}^{+2.2}\]$
RP/R* Radius of planet in stellar radii 0.02715−0.00078+0.00075$\[0.02715_{-0.00078}^{+0.00075}\]$ 0.02753−0.00079+0.00076$\[0.02753_{-0.00079}^{+0.00076}\]$
a/R* Semi-major axis in stellar radii 7.91−0.28+0.31$\[7.91_{-0.28}^{+0.31}\]$ 7.37−0.27+0.28$\[7.37_{-0.27}^{+0.28}\]$
δ (RP/R*)2 0.000737−0.000042+0.000041$\[0.000737_{-0.000042}^{+0.000041}\]$ 0.000758 ± 0.000043
δTESS Transit depth in TESS (frac) 0.000784 ± 0.000034 0.000787−0.000033+0.000034$\[0.000787_{-0.000033}^{+0.000034}\]$
τ In/egress transit duration (days) 0.0070−0.0016+0.0014$\[0.0070_{-0.0016}^{+0.0014}\]$ 0.0082−0.0018+0.0016$\[0.0082_{-0.0018}^{+0.0016}\]$
T14 Total transit duration (days) 0.1504−0.0029+0.0032$\[0.1504_{-0.0029}^{+0.0032}\]$ 0.1517−0.0031+0.0033$\[0.1517_{-0.0031}^{+0.0033}\]$
b Transit impact parameter 0.662−0.12+0.062$\[0.662_{-0.12}^{+0.062}\]$ 0.718−0.091+0.049$\[0.718_{-0.091}^{+0.049}\]$
ρP Density (cgs) 2.52−0.44+0.52$\[2.52_{-0.44}^{+0.52}\]$ 2.04−0.36+0.42$\[2.04_{-0.36}^{+0.42}\]$
log gP Surface gravity (cgs) 3.360−0.069+0.065$\[3.360_{-0.069}^{+0.065}\]$ 3.287−0.070+0.065$\[3.287_{-0.070}^{+0.065}\]$
⟨F⟩ Incident Flux (109 erg s−1 cm−2) 1.112−0.051+0.047$\[1.112_{-0.051}^{+0.047}\]$ 1.201−0.055+0.051$\[1.201_{-0.055}^{+0.051}\]$
TP Time of Periastron (BJDTDB) 2459852.93−0.41+0.82$\[2459852.93_{-0.41}^{+0.82}\]$ 2459852.94−0.42+0.84$\[2459852.94_{-0.42}^{+0.84}\]$
e cos ω* −0.029−0.055+0.039$\[-0.029_{-0.055}^{+0.039}\]$ −0.029−0.054+0.039$\[-0.029_{-0.054}^{+0.039}\]$
e sin ω* 0.060−0.064+0.11$\[0.060_{-0.064}^{+0.11}\]$ 0.057−0.062+0.11$\[0.057_{-0.062}^{+0.11}\]$
MP sin i Minimum mass (M⊕) 60.7−7.9+7.6$\[60.7_{-7.9}^{+7.6}\]$ 56.0−7.3+7.0$\[56.0_{-7.3}^{+7.0}\]$
MP/M* Mass ratio 0.000138−0.000018+0.000017$\[0.000138_{-0.000018}^{+0.000017}\]$ 0.000145 ± 0.000018
Wavelength Parameters (TESS):
u1 Linear limb-darkening coeff 0.281 ± 0.038 0.294 ± 0.039
u2 Quadratic limb-darkening coeff 0.288 ± 0.036 0.281 ± 0.036
Telescope Parameters (PARAS-2):
γrel Relative RV Offset (m/s) −0.8 ± 1.5 −0.8 ± 1.5
σJ RV Jitter (m/s) 5.4−1.5+1.8$\[5.4_{-1.5}^{+1.8}\]$ 5.4−1.5+1.8$\[5.4_{-1.5}^{+1.8}\]$
σJ2$\[\sigma_J^2\]$ RV Jitter Variance 28−14+22$\[28_{-14}^{+22}\]$ 28−14+22$\[28_{-14}^{+22}\]$
Transit Parameters (TESS): sector 17, sector 57 sector 17, sector 57
σ2 Added Variance (1.10−0.29+0.31,1.89−0.53+0.54)×10−8$\[(1.10_{-0.29}^{+0.31}, 1.89_{-0.53}^{+0.54}) \times 10^{-8}\]$ (1.10−0.29+0.31,1.89−0.53+0.54)×10−8$\[(1.10_{-0.29}^{+0.31}, 1.89_{-0.53}^{+0.54}) \times 10^{-8}\]$

Notes. (1)Relative probability, (2)spectroscopically derived (see Section 3.1), (3)assumes no albedo and perfect redistribution.

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