Table 1
Stellar properties of HIP 29442 (HD 42813; TOI-469).
| Parameter | Value | Refs. |
|---|---|---|
| α (J2000) | 06h 12m 13.97s | [1] |
| δ (J2000) | −14° 39′ 00.06″ | [1] |
| µα • cos δ (mas yr−1) | −79.132 ± 0.013 | [1] |
| µδ (mas yr−1) | 162.696 ± 0.013 | [1] |
| ϖ (mas) | 14.7065 ± 0.0159 | [1] |
| d (pc) | 67.907 ± 0.075 | [2] |
| B | 10.25 ± 0.03 | [3] |
| V | 9.67 | [3] |
| G | 9.282 ± 0.003 | [1] |
| J | 8.056 ± 0.029 | [4] |
| H | 7.718 ± 0.049 | [4] |
| Ks | 7.587 ± 0.024 | [4] |
| Teff (K) | 5289 ± 69 | [5] |
| υ sin i⋆ (km s−1) | 1.94 ± 0.45 | [5] |
| log g (cgs)(α) | 4.24 ± 0.13 | [5] |
| log gtrig. (cgs)(b) | 4.39 ± 0.03 | [5] |
| ξt(km s−1) | 0.74 ± 0.06 | [5] |
| <log R′Hk > (dex) | −5.25 | [5] |
| Prot,⋆ (days) |  |
[5](*) |
| R⋆ (R⊙) |  |
[5](**) |
 |
[5](***) | |
| M⋆ (M⊙) |  |
[5] |
| ρ⋆ (ρ⊙) | 1.01 ± 0.07 | [5] |
| Bolom. luminosity, L⋆ (L⊙) | 0.695 ± 0.011 | [5](**) |
| 0.70 ± 0.03 | [5](***) | |
| Age(c) (Gyr) |  |
[5](***) |
| (>4.07 at 95% confidence) | ||
| [Fe/H] (dex) | 0 24 ± 0 05 | [5] |
| [NaI/H] (dex) | 0 22 ± 0 05 | [5] |
| [MgI/H] (dex) | 0 26 ± 0 04 | [5] |
| [AlI/H] (dex) | 0 21 ± 0 07 | [5] |
| [SiI/H] (dex) | 0 21 ± 0 04 | [5] |
| [TiI/H] (dex) | 0 25 ± 0 07 | [5] |
| [NiI/H] (dex) | 0 22 ± 0 05 | [5] |
| [C/H] (dex) | 0.15 ± 0.05 | [5] |
| [O/H] (dex), at 6158 Å | 0.26 ± 0.06 | [5] |
| (U,V,W)(km s−1) | (86.30 ± 0.11, 3.23 ± 0.10–15.40 ± 0.04) | [5] |
Notes. (α)From spectral analysis. (b)Trigonometric surface gravity using Gaia DR3 data. (c)Here we report the 68% confidence interval derived from the posterior distribution, without constraining the age upper limit to be 13.78 Gyr. (*)Derived from a GP regression of RVs; (**)From the Stefan–Boltzmann equation (adopted value);(***) PARAM 1.5 optimisation code.
References. [1] Gaia Collaboration (2023, 2016); [2] Bailer-Jones et al. (2021); [3] Zacharias et al. (2012); [4] Cutri et al. (2003); [5] This work.
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