Table 1
L 98-59 stellar parameters.
| Parameter | Value | References |
|---|---|---|
| L 98-59, TIC 307210 830, TOI-175 | ||
| Astrometry | ||
| RA, α (deg) | 124.532860 | 1,2 |
| Dec, δ (deg) | − 68.314466 | 1,2 |
| RA proper motion, μα | ||
| (mas yr−1) | 94.767 ± 0.054 | 1,2 |
| Dec proper motion, μδ | ||
| (mas yr−1) | − 340.470 ± 0.052 | 1,2 |
| Parallax, ϖ (mas) | 94.167 ± 0.028 | 1,2,3 |
| Distance, d (pc) | 10.619 ± 0.003 | 1,2,3 |
| Photometry | ||
| B | 13.289 ± 0.027 | 4 |
| g′ | 12.453 ± 0.019 | 4 |
| V | 11.685 ± 0.017 | 4 |
| r′ | 11.065 ± 0.044 | 4 |
| GBP | 11.977 ± 0.002 | 1,5 |
| G | 10.5976 ± 0.0008 | 1,5 |
| GRP | 9.472 ± 0.001 | 1,5 |
| T | 9.393 | 6 |
| J | 7.933 ± 0.027 | 7 |
| H | 7.359 ± 0.049 | 7 |
| Ks | 7.101 ± 0.018 | 7 |
| W1 | 6.935 ± 0.062 | 8 |
| W2 | 6.767 ± 0.021 | 8 |
| W3 | 6.703 ± 0.016 | 8 |
| W4 | 6.578 ± 0.047 | 8 |
| Stellar parameters | ||
| Spectral type | M3V ± 1 | 9 |
| Stellar radius, Rs (R⊙)(*) | 0.314 ± 0.014 | 3,9 |
| Effective temperature, Teff (K) | 3412 ± 49 | 3,10 |
| Stellar mass, Ms (M⊙)(†) | 0.312 ± 0.031 | 3,11 |
| Surface gravity, logg (dex) | 4.94 ± 0.06 | 12 |
| Metallicity, [Fe/H] | − 0.5 ± 0.5 | 9 |
 |
− 5.40 ± 0.11 | 12 |
| Rotation period, Prot (days)(‡) | 78 ± 13 | 12,13 |
Notes.
(*) Includes the radius uncertainty from Kostov et al. (2019). (†)We add in quadrature a fractional uncertainty of 10% based on the dispersion in stellar masses for stars with metallicities that differ from solar (Mann et al. 2019). (‡)The predicted Prot
based on 
and the M dwarf activity-rotation relation from Astudillo-Defru et al. (2017a). This value is consistent with the periodogram peak in the Hα
time series in Fig. 1. References. (1) Gaia Collaboration (2018), (2) Lindegren et al. (2018), (3) Cloutier (2019), (4) Henden et al. (2016), (5) Evans et al. (2018), (6) Stassun et al. (2018), (7) Cutri et al. (2003), (8) Cutri et al. (2013), (9) Kostov et al. (2019), (10) Mann et al. (2015), (11) Benedict et al. (2016), (12) this work, (13) Astudillo-Defru et al. (2017a).
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