Open Access
Table 1
Stellar properties of G 9–40.
| Parameter | Value | Source |
|---|---|---|
| Coordinates and main identifiers | ||
| Name | G 9–40 | Giclas et al. (1971) |
| NLTT 20661 | Luyten (1979) | |
| K2-313 | Stef20 | |
| α | 08:58:52.33 | Gaia EDR3 |
| δ | +21:04:34.2 | Gaia EDR3 |
| EPIC ID | 212048748 | EPIC |
| TIC ID | 203214081 | TIC |
| Karmn ID | J08588+210 | AF15 |
| Magnitudes | ||
| V (mag) | 13.82 ± 0.04 | UCAC4 |
| R (mag) | 12.68 ± 0.07 | UCAC4 |
| G (mag) | 12.7160 ± 0.0028 | Gaia EDR3 |
| J (mag) | 10.06 ± 0.02 | 2MASS |
| H (mag) | 9.43 ± 0.02 | 2MASS |
| K (mag) | 9.19 ± 0.02 | 2MASS |
| Parallax and kinematics | ||
| π⋆ (mas) | 35.930 ± 0.025 | Gaia EDR3 |
| d⋆ (pc) | 27.832 ± 0.019 | Gaia EDR3 |
| µα cos δ (mas yr−1) | +175.740 ± 0.027 | Gaia EDR3 |
| µδ (mas yr−1) | −318.332 ± 0.020 | Gaia EDR3 |
| U (km s−1) | −7.78 ± 0.06 | This work |
| V (km s−1) | −5.98 ± 0.84 | This work |
| W (km s−1) | −9.18 ± 0.71 | This work |
| Photospheric parameters | ||
| Teff (K) | 3395 ± 51 | This work |
| log g⋆ (dex) | 4.84 ± 0.04 | This work |
| [Fe/H] (dex) | −0.07 ± 0.16 | This work |
| Physical parameters | ||
| M⋆ (M⊙) | 0.2952 ± 0.0136 | This work |
| R⋆ (R⊙) | 0.3026 ± 0.0095 | This work |
| L⋆ (10−4 L⊙) | 109.6 ± 1.9 | This work |
| Prot (d) | 30 ± 1 | Stef20 |
References. Stef20: Stefansson et al. (2020); Gaia EDR3: Gaia Collaboration (2021); EPIC: Huber et al. (2016); TIC: Stassun et al. (2018); AF15: Alonso-Floriano et al. (2015); UCAC4: Zacharias et al. (2013); 2MASS: Skrutskie etal. (2006).
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