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Table 1
Stellar parameters of GJ 357.
| Parameter | Value | Reference |
|---|---|---|
| Name and identifiers | ||
| Name | L 678-39 | Luyten (1942) |
| GJ | 357 | Gliese (1957) |
| Karmn | J09360-216 | AF15 |
| TOI | 562 | TESS Alerts |
| TIC | 413248763 | Stassun et al. (2018) |
| Coordinates and spectral type | ||
| α | 09:36:01.64 | Gaia DR2 |
| δ | –21:39:38.9 | Gaia DR2 |
| SpT | M2.5 V | Hawley et al. (1996) |
| Magnitudes | ||
| B (mag) | 12.52 ± 0.02 | UCAC4 |
| V (mag) | 10.92 ± 0.03 | UCAC4 |
| g (mag) | 11.70 ± 0.02 | UCAC4 |
| G (mag) | 9.8804 ± 0.0014 | Gaia DR2 |
| r (mag) | 10.34 ± 0.09 | UCAC4 |
| i (mag) | 9.35 ± 0.27 | UCAC4 |
| J (mag) | 7.337 ± 0.034 | 2MASS |
| H (mag) | 6.740 ± 0.033 | 2MASS |
| Ks (mag) | 6.475 ± 0.017 | 2MASS |
| Parallax and kinematics | ||
| π (mas) | 105.88 ± 0.06 | Gaia DR2 |
| d (pc) | 9.444 ± 0.005 | Gaia DR2 |
| μα cos δ (mas yr−1) | + 138.694 ± 0.100 | Gaia DR2 |
| μδ (mas yr−1) | − 990.311 ± 0.083 | Gaia DR2 |
| Vr (km s−1) | −34.70 ± 0.50 | This work |
| U (km s−1) | 41.11 ± 0.13 | This work |
| V (km s−1) | 11.37 ± 0.45 | This work |
| W (km s−1) | −37.25 ± 0.19 | This work |
| Photospheric parameters | ||
| Teff (K) | 3505 ± 51 | Schweitzer et al. (2019) |
| log g | 4.94 ± 0.07 | Schweitzer et al. (2019) |
| [Fe/H] | − 0.12 ± 0.16 | Schweitzer et al. (2019) |
| v sin i⋆ (km s−1) | <2.0 | Reiners et al. (2018) |
| Physical parameters | ||
| M(M⊙) | 0.342 ± 0.011 | Schweitzer et al. (2019) |
| R(R⊙) | 0.337 ± 0.015 | Schweitzer et al. (2019) |
| L(10−4 L⊙) | 159.1 ± 3.6 | Schweitzer et al. (2019) |
References. AF15: Alonso-Floriano et al. (2015); Gaia DR2: Gaia Collaboration (2018); UCAC4: Zacharias et al. (2013); 2MASS: Skrutskie et al. (2006).
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