Open Access
Table 1
Basic parameters for TOI-1438.
| Parameter | Value |
|---|---|
| Main identifiers | |
| TIC | 229650439 |
| 2MASS | J18434182+7456152 |
| WISE | J184341.73+745615.9 |
| TYC | 4442-00562-1 |
| UCAC4 | 825-019611 |
| Gaia DR2 | 2268101727131230464 |
| APASS | 60356991 |
| Equatorial coordinates (epoch 2015.5) | |
| RA (J2000.0) | 18h.43m.41s.71 |
| Dec (J2000.0) | +74°.56′.16″.2 |
| Magnitudes | |
| Johnson B | 11.972 ± 0.1560 |
| Johnson V | 10.957 ± 0.014 |
| TESS | 10.3237 ± 0.006 |
| Ga | 10.8555 ± 0.0001 |
| GRPa | 10.2670 ± 0.0003 |
| GBPa | 11.2812 ± 0.0008 |
| J | 9.584 ± 0.018 |
| H | 9.191 ± 0.017 |
| K | 9.09 ± 0.02 |
| WISE W1 | 9.054 ± 0.023 |
| WISE W2 | 9.116 ± 0.020 |
| Parallax a (mas) | 9.0312 ± 0.0111 |
| Distance a (pc) | 110.7 ± 0.1 |
| Radial velocity a (km s−1) | −29.40 ± 0.34 |
| μRAa (mas yr−1) | −22.8246 ± 0.0125 |
| μDeca (mas yr−1) | 53.0721 ± 0.0155 |
| Ruwea,b | 0.853 |
| This work | |
| M⋆ (M⊙) | 0.876 ± 0.038 |
| R⋆ (R⊙) | 0.820 ± 0.017 |
| ρ* (g cm−3) | 2.2 ± 0.2 |
| L⋆ (L⊙) | 0.45 ± 0.02 |
| Teff (K) | 5230 ± 60 |
| Prot/sin i⋆ (d) | 22.8 ± 11.4 |
| log g⋆ (dex) | 4.50 ± 0.07 |
| [Fe/H] (dex) | 0.03 ± 0.06 |
| [Ca/H] (dex) | 0.07 ± 0.06 |
| [Mg/H] (dex) | 0.14 ± 0.06 |
| [Na/H] (dex) | 0.13 ± 0.06 |
| [Si/H] (dex) | 0.07 ± 0.06 |
| V sin i⋆ (kms−1) | 1.8 ± 0.9 |
| log(R′HK)c | −4.925 ± 0.013 |
| Spectral type | K0V |
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