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Table 2
HD 5278 system parameters from separate analysis of TESS and ESPRESSO data.
| Parameter | Prior | Value |
|---|---|---|
| Transit light curve parameters | ||
| Orbital period P (days) |  (−inf,inf) |
 |
| Transit epoch Tc (BJDTDB − 2450000) |  (−inf,inf) |
 |
| Transit duration T14 (days) |  (−inf,inf) |
 |
| Radius ratio Rp∕R⋆ |  (−inf,inf) |
0.0188 ± 0.0002 |
| Inclination i (deg) |  (0.0,inf |
 |
| Jitter Sector 1 σS1 |  (0.0,inf) |
 |
| Jitter Sector 12 σS12 |  (−inf,inf) |
 |
| Jitter Sector 13 σS13 |  (−inf,inf) |
 |
| Jitter Sector 27 σS27 |  (−inf,inf) |
 |
| u1 (fixed) | 0.24 | |
| u2 (fixed) | 0.30 | |
| Spectroscopic orbit parameters | ||
| Kb (m s−1) |  (0,5) |
1.96 |
| Pb (days) |  (14.3399,0.0032) |
14.33902 ± 0.00007 |
| Tc,b (BJD-2 450 000) |  (8551.645659,0.002205) |
8551.645 ± 0.001 |
 |
 (-1,1) |
0.354 |
 |
 (-1,1) |
 |
| Kc (m s−1) |  (0,10) |
3.13 |
| Pc (days) |  (0,45) |
40.897 |
| Tc,c (BJD-2 450 000) |  (8420,8475) |
8431.8 ± 1.3 |
 |
 (-1,1) |
 |
 |
 (-1,1) |
 |
| σjit,1 (m s−1) |  (0,10) |
0.82 |
| γ1 (m s−1) |  (-30 450,-30 350) |
−30 395.3 ± 0.4 |
| σjit,2 (m s−1) |  (0,10) |
1.49 |
| γ2 (m s−1) |  (-30 450,-30 350) |
−30 396.6 ± 0.3 |
| Derived planetary parameters | ||
| Impact parameter bb | 0.43 ± 0.05 | |
| eb | 0.22 (<0.29) |
|
| ωb (rad) | 1.94 |
|
| Orbital semi-major axis ab (au) | 0.120 ± 0.001 | |
| Mass Mb (M⊕ ] |  |
|
| Radius Rb (R⊕) | 2.45 ± 0.05 | |
| Density ρb (g cm−3) | 2.9 ± 0.5 | |
| Surface gravity log gb (m s−2) |  |
|
| Equilibrium temperature Teq,b (K) (a) | 943 ± 13 | |
| Insolation Sb (S⊕) | 132 ± 5 | |
| ec | 0.07 (<0.11) |
|
| ωc (rad) | 0.59 |
|
| Minimum mass Mc sin ic (M⊕) | 18.1 ± 2.0 | |
| Orbital semi-major axis ac (au) | 0.242 ± 0.003 | |
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