Table 6.
Orbital velocity vectors of the 61 Cyg components.
| 61 Cyg A | 61 Cyg B | |
|---|---|---|
| Gaia DR2 | ||
| μorb (mas a−1) | ( + 31.54 ± 0.81, +47.95 ± 0.32) | ( − 26.85 ± 0.79, −46.28 ± 0.20) |
| μorb position angle θ | 33.33 ± 0.69 deg | 210.12 ± 0.75 deg |
| Diff. position angle ΔθAB = θ(A)−θ(B)+180° | 3.21 ± 1.01 deg | |
| Δμorb = μorb(B)+(mA/mB) μorb(A) | ( + 4.69 ± 1.13, +1.67 ± 0.38) mas a−1 | |
| Δvorb = vorb(B)+(mA/mB) vorb(A) | ( + 77.7 ± 18.7, +27.7 ± 6.3) m s−1 | |
| Δvorb norm, PA | 87.1 ± 21.2 m s−1, +74.6 ± 6.3 deg | |
| Gaia EDR3 | ||
| μorb (mas a−1) | ( + 31.49 ± 0.77, +47.74 ± 0.17) | ( − 26.74 ± 0.76, −45.93 ± 0.17) |
| μorb position angle θ | 33.41 ± 0.66 deg | 210.21 ± 0.70 deg |
| Diff. position angle ΔθAB = θ(A)−θ(B)+180° | 3.20 ± 0.96 deg | |
| Δμorb = μorb(B)+(mA/mB) μorb(A) | ( + 4.75 ± 1.08, +1.81 ± 0.24) mas a−1 | |
| Δvorb = vorb(B)+(mA/mB) vorb(A) | ( + 78.7 ± 17.9, +30.0 ± 4.0) m s−1 | |
| Δvorb norm, PA | 88.5 ± 19.8 m s−1, +73.5 ± 5.4 deg | |
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