Table 5
Systems with estimated minimum orbital periods of less than 50 years.
| Name | Comp. | Spectral | ρ (J2016.0) | ρ (epoch) | ℳ |  |
|---|---|---|---|---|---|---|
| type | (arcsec) | (arcsec) | (ℳ⊙) | (a) | ||
| BL Cet | A | M5.0 V | 0.129 ± 0.044 | |||
| UV Cet | B | M6.0 V | 2.259 | 1.4 (1935) | 0.118 ± 0.045 | 29.9 ± 3.8 |
| HD 32450 A | A | M0.0 V | 0.611 ± 0.027 | |||
| HD 32450 B | B | M3.0 V | 0.888 | 0.5 (1929) | 0.372 ± 0.032 | 20.60 ± 0.44 |
| V577 Mon | A | M4.5 V | 0.230 ± 0.037 | |||
| Ross 614 B | B | M4.5 V | 0.313 | 1.3 (1939) | 0.228 ± 0.037 | 2.16 ± 0.12 |
| LP 780–32 | A | M4.0 V | 0.326 ± 0.013 | |||
| Gaia DR3 2926756741750933120 | B | M4.0 V | 0.556 | 0.6 (2016) | 0.266 ± 0.036 | 32.30 ± 1.0 |
| GJ 400 A | A | M0.5 V | 0.642 ± 0.027 | |||
| Gaia DR3 776067093937332992 | B | M2.5 V | 0.684 | 1.2 (1896) | 0.393 ± 0.032 | 28.22 ± 0.57 |
| GJ 3673 | A | M3.5 V | 0.386 ± 0.033 | |||
| G 122–34 B | B | M3.0 V | 0.339 | 0.2 (2012) | 0.346 ± 0.034 | 42.2 ± 1.4 |
| Wolf 424 A | A | M5.0 V | 0.140 ± 0.043 | |||
| Wolf 424 B | B | M5.5 V | 1.149 | 0.7 (1938) | 0.143 ± 0.042 | 21.9 ± 2.3 |
| GJ 3760 A | A | M2.5 V | 0.464 ± 0.030 | |||
| GJ 3760 B | B | M2.0 V | 0.477 | 0.4 (1991) | 0.463 ± 0.030 | 49.9 ± 1.2 |
| GJ 3775 | A | M3.5 V | 0.218 ± 0.038 | |||
| Gaia DR3 3688439268658769408 | B | M4.5 V | 0.701 | 0.6 (2012) | 0.211 ± 0.038 | 44.2 ± 2.8 |
| Ross 52 A | A | M3.5 V | 0.327 ± 0.034 | |||
| Ross 52 B | B | M4.5 V | 0.880 | 0.9 (1940) | 0.238 ± 0.037 | 43.3 ± 1.9 |
| HD 239960 A | A | M3.0 V | 0.306 ± 0.034 | |||
| DO Cep | B | M4.0 V | 2.052 | 2.3 (1890) | 0.199 ± 0.039 | 33.2 ± 1.7 |
Notes. Values for the orbital periods are published for some of these stars, namely: BL Cet + UV Cet: 26.380 ± 0.002 a (GRAVITY Collaboration 2024); HD 32450 AB: 43.55 ± 0.27 a (Hartkopf et al. 2001); V577 Mon + Ross 614: 16.5777 ± 0.0027 a (Mann et al. 2019); GJ 400 AB: 160.67 a (Mante 2000); Wolf 424 AB: 15.826 ± 0.017 a (Mann et al. 2019); Ross 52 AB: 31.45 ± 0.42 a (Mason et al. 2018); HD 239960 A + DO Cep: 44.5814 ± 0.0345 a (Izmailov 2019).
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