Table 2
Properties of the host star.
| Property | Value | Source |
|---|---|---|
| Designations | ||
| LP | 890-9 | Luyten (1979) |
| TIC | 44898913 | Stassun et al. (2018b) |
| TOI | 4306 | |
| SPECULOOS | 2 | |
| 2MASS | J04163114-2818526 | Skrutskie et al. (2006) |
| Gaia EDR3 | 4886243456388510720 | Gaia Collaboration (2021) |
| Astrometric properties | ||
| RA (J2000) | 04:16:31.16 | Gaia EDR3 (Gaia Collaboration 2021) |
| Dec (J2000) | −28:18:52.95 | Gaia EDR3 (Gaia Collaboration 2021) |
| µRA (mas yr−1) | 218.569 ± 0.036 | Gaia EDR3 (Gaia Collaboration 2021) |
| µDec (mas yr−1) | −251.145 ± 0.047 | Gaia EDR3 (Gaia Collaboration 2021) |
| Parallax (mas) | 30.933 ± 0.042 | Gaia EDR3 (Gaia Collaboration 2021) |
| Distance (pc) | 32.33 ± 0.05 | Gaia EDR3 (Gaia Collaboration 2021) |
| Vtan (km s−1) | 51.02 ± 0.07 | Gaia EDR3 (Gaia Collaboration 2021) |
| RV(km s−1) | 27.94 ± 0.60 | Sect. 3.3 |
| U (kms−1) | 17.66 ± 0.27 | Sect. 3.3 |
| V (km s−1) | −57.77 ± 0.30 | Sect. 3.3 |
| W (km s−1) | 5.48 ± 0.39 | Sect. 3.3 |
| Photometric magnitudes | ||
| TESS (mag) | 14.2683 ± 0.0076 | Stassun et al. (2018b) |
| V (mag) | 18.0 ± 0.2 | Muirhead et al. (2018) |
| g (mag) | 18.4422 ± 0.0072 | Pan-STARRS1 (Chambers et al. 2016) |
| r (mag) | 17.1365 ± 0.0050 | Pan-STARRS1 (Chambers et al. 2016) |
| i (mag) | 15.0975 ± 0.0026 | Pan-STARRS1 (Chambers et al. 2016) |
| z (mag) | 14.1593 ± 0.0013 | Pan-STARRS1 (Chambers et al. 2016) |
| y (mag) | 13.6454 ± 0.0044 | Pan-STARRS1 (Chambers et al. 2016) |
| Gaia (mag) | 15.7913 ± 0.0028 | Gaia EDR3 (Gaia Collaboration 2021) |
| J (mag) | 12.258 ± 0.023 | 2MASS (Skrutskie et al. 2006) |
| H (mag) | 11.692 ± 0.025 | 2MASS (Skrutskie et al. 2006) |
| K (mag) | 11.344 ± 0.023 | 2MASS (Skrutskie et al. 2006) |
| W1 (mag) | 11.129 ± 0.061 | WISE (Cutri et al. 2021) |
| W2 (mag) | 10.920 ± 0.020 | WISE (Cutri et al. 2021) |
| W3 (mag) | 10.715 ± 0.083 | WISE (Cutri et al. 2021) |
| Spectroscopic and derived properties | ||
| Optical SpT | M6.0 ± 0.5 | Kast spectrum (Sect. 3.1) |
| Near-infrared SpT | M6.0 ± 0.5 | SpeX spectrum (Sect. 3.1) |
| [Fe/H] (dex) | −0.028 ± 0.089 | SpeX spectrum (Sect. 3.1) |
| Teff (K) | 2850 ± 75 | SED fit (Sect. 3.2) |
| Fbol (10−11 erg s−1 cm−2) | 4.41 ± 0.15 | SED fit (Sect. 3.2) |
| L★ (10−3 L⊙) | 1.441 ± 0.038 | Fbol + parallax (Sect. 3.2) |
| R★ (R⊙) | 0.1556 ± 0.0086 | Fbol + Teff + parallax (Sect. 3.2) |
| M★ (M⊙) | 0.118 ± 0.002 | Evol. modelling + L★ + [Fe/H] (Sect. 3.2) |
| log g★ (cgs) |  |
M★ + R★ |
| ρ★ (g cm−3) |  |
M★ + R★ |
| Age (Gyr) |  |
UVW + [Fe/H] (Sect. 3.3) |
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