Table 1.
Published data that were utilised for the study of the two-planet systems.
| Parameter | K2-21(1) | K2-24(2) | Kepler-9(3) | Kepler-108(4) |
|---|---|---|---|---|
| mS[M⊙] |
 |
 |
 |
 |
| mb[mJ] | 0.01493 (a)/0.01105 (b) |
 |
 |
0.41334 |
| mc[mJ] | 0.01978 (a)/0.02063 (b) |
 |
 |
0.20279 |
| Tb[days] |
 |
 |
 |
 |
| Tc[days] |
 |
 |
 |
 |
| ab[au] |
 |
− |
 |
− |
| ac[au] |
 |
− |
 |
− |
| eb |
 |
 |
 |
0.08050 |
| ec |
 |
< 0.07 |
 |
0.13515 |
| ib[°] |
 |
− | − | 90.44 |
| ic[°] |
 |
− |
 |
90.40 |
| ϖb[°] |
 |
− | − | − |
| ϖc[°] |
 |
− | − | − |
| ωb[°] | − | − |
 |
−151.44 |
| ωc[°] | − | − |
 |
−74.80 |
| Mb[°] | − | − |
 |
− |
| Mc[°] | − | − |
 |
− |
| T0b[BJD] | − | − | − | 665.12261+2454900 |
| T0c[BJD] | − | − | − | 816.67628+2454900 |
| Ωb[°] | − | − | 180 | 0.0 |
| Ωc[°] | − | − |
 |
21.23 |
Notes. Observational values for the four selected systems provided by (1)Dressing et al. (2017), (2)Petigura et al. (2018), (3)Borsato et al. (2019), and (4)Mills & Fabrycky (2017). The planetary masses of K2-21 were yielded through the (a)mass-radius-density relation of Weiss & Marcy (2014) and (b)the power-law equation of Lissauer et al. (2011).
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