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Table 1
Physical properties of GJ 9689.
| Parameter | Value | Notes |
|---|---|---|
| α (ICRS J2000) | 20:13:51.8 | |
| δ (ICRS J2000) | +13:23:20 | |
| Teff (K) | 3836 ± 69 | (a) |
| Spectral Type | M0.5 | (a) |
| [Fe∕H] (dex) | 0.05 ± 0.04 | (a) |
| M⋆ (M⊙) | 0.59 ± 0.06 | (a) |
| R⋆ (R⊙) | 0.57 ± 0.06 | (a) |
| logg (cm s-2) | 4.69 ± 0.05 | (a) |
| log(L⋆∕L⊙) | –1.20 ± 0.09 | (a) |
| vsini (km s-1) | <1.47 | (b) |
| Age† (Gyr) | 8.9 ± 3.9 | (a) |
| π (mas) | 32.5879 ± 0.0140 | (c) |
| μα (mas yr−1) | 421.921 ± 0.014 | (c) |
| μδ (mas yr−1) | 19.129 ± 0.015 | (c) |
| vrad (km s-1) | –67.701 ± 0.03 | |
| U (km s-1) | –72.54 ± 0.02 | |
| V (km s-1) | –42.24 ± 0.01 | |
| W (km s-1) | –36.21 ± 0.02 | |
| V (mag) | 11.30 | (d) |
| (B − V) (mag) | 1.365 ± 0.133 | (d) |
| (V − I) (mag) | 1.60 ± 0.25 | (d) |
| 2MASS J (mag) | 8.309 ± 0.029 | (e) |
| 2MASS H (mag) | 7.633 ± 0.021 | (e) |
| 2MASS KS (mag) | 7.468 ± 0.021 | (e) |
Notes. (†)By interpolation of parallaxes and stellar parameters within a grid of Yonsei-Yale isochrones, see (a) for details.
References. (a)Maldonado et al. (2020); (b)Maldonado et al. (2017); (c)Gaia Collaboration (2020); (d)ESA (1997); (e)Cutri et al. (2003).
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