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Table 4.
Orbital elements.
| HD | P | e | ω | V0 | K | T | a1 sin i | f(M) | ||
|---|---|---|---|---|---|---|---|---|---|---|
| (d) | (°) | (km s−1) | (km s−1) | (JD–2 400 000) | (Gm) | (M⊙) | ||||
| a. Spectroscopic elements | ||||||||||
| 787AB | > 4196 | 0.57: | ||||||||
| 3627 | 27807: | 0.5: | ||||||||
| (c) | 20158 | 0.34 | 356 | −8.5 | 4.0 | 15568 | 1042.7 | 0.111 | ||
| 21078 | 263.697 ± 0.007 | 0.6379 ± 0.0004 | 214.61 ± 0.06 | 49.83 ± 0.01 | 19.94 ± 0.02 | 56216.99 ± 0.02 | 55.68 ± 0.07 | 0.0989 ± 0.0003 | ||
| 27497 | 976.4 ± 0.5 | 0.292 ± 0.003 | 89.5 ± 0.5 | 4.07 ± 0.01 | 4.82 ± 0.01 | 58244 ± 1 | 62.0 ± 0.3 | 0.0099 ± 0.0001 | ||
| (d) | 976.3 ± 0.4 | 0.297 ± 0.007 | 88.1 ± 1.7 | 4.63 ± 0.03 | 4.77 ± 0.04 | 53357.4 ± 3.8 | 61.1 ± 0.5 | 0.0096 ± 0.00025 | ||
| 31553 | 3279 ± 52 | 0.56 ± 0.01 | 78.8 ± 0.5 | −3.26 ± 0.03 | 3.57 ± 0.06 | 55517 ± 30 | 133.6 ± 5.6 | 0.0088 ± 0.0005 | ||
| 156115AB | 4169 ± 11 | 0.469 ± 0.002 | 217.6 ± 0.2 | −12.66 ± 0.01 | 7.17 ± 0.02 | 60524 ± 11 | 363 ± 2 | 0.110 ± 0.001 | ||
| 212320 | 1691.9 ± 1.7 | 0.226 ± 0.002 | 57.7 ± 0.6 | −3.49 ± 0.01 | 4.87 ± 0.01 | 58224 ± 3 | 110.4 ± 0.3 | 0.0187 ± 0.0001 | ||
| b. Small-amplitude variations | ||||||||||
| 787Aa+Ab | 508.4 ± 4.8 | 0.49 ± 0.11 | 100 ± 18 | −0.009 ± 0.008 | 0.09 ± 0.02 | 57005 ± 16 | 0.53 ± 0.16 | (2.3 ± 1.6) × 10−8 | ||
| 39853 (a) | 106 | 0.0 | – | 81.6 | 0.20 | 0.29 | 0.9 × 10−8 | |||
| 282 | 0.0 | – | 81.6 | 0.18 | 0.71 | 1.7 × 10−7 | ||||
| 156115Aa+Ab | 548.6 ± 0.9 | <0.02 | – | 0.008 ± 0.006 | 0.40 ± 0.01 | 57082.8 ± 8 (b) | 3.04 ± 0.07 | (3.7 ± 0.3) × 10−6 | ||
| c. Astrometric elements | ||||||||||
| HD | Ω | i | a0 |
ϖ | μα cos δ | μδ | M1 | M2 | ||
| (°) | (°) | (mas) | (Gm) | (mas) | (mas yr−1) | (mas yr−1) | (M⊙) | (M⊙) | ||
| 21078 | 110 ± 18 | 91 ± 13 | 5.1 ± 0.5 | 57 ± 11 | 13.3 ± 1.1 | 216.0 ± 0.8 | 114.4 ± 1.0 | 1.2 | 0.71 | Solution coherent with location in HRD |
| 1.5 | 0.81 | |||||||||
| 2.0 | 0.96 | |||||||||
Notes. Among the astrometric orbital elements, a0 is the semi-major axis of the photocentric orbit.
(c)
Orbit from SB9 catalogue (Pourbaix et al. 2004) and Bakos (1976).
(d)
From Griffin (2013).
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