Table 2
Astrometric parameters of GJ 676A.
| Par. | Unit | Standard modela | Orbit modelb | Orbit modelc | HIP | HIP2 |
| (Linear fit) | (MCMC) | (Sequential fit) | (1) | (2) | ||
|
|
||||||
|
(mas) | −265.13 ± 0.2 | −264.1 ± 0.2 | N/A | N/A | N/A |
| Δδ0 | (mas) | −126.1 ± 0.6 | −125.3 ± 0.5 | N/A | N/A | N/A |
| ϖ | (mas) | 59.7 ± 0.3 | 59.3 ± 0.3 | 59.3 ± 0.2 | 61.98 ± 1.81 | 60.79 ± 1.62 |
| μ α ⋆ | (mas yr-1) | −252.9 ± 0.3 d | −253.4 ± 0.4 d | −253.4 ± 0.2 d | −259.23 ± 1.46 | −260.02 ± 1.34 |
| μ δ | (mas yr-1) | −178.2 ± 0.2 d | −177.9 ± 0.2 d | −177.9 ± 0.2 d | −185.69 ± 0.92 | −184.29 ± 0.82 |
| ρ | (mas) | −31 ± 6 | −29 ± 6 | N/A | N/A | N/A |
| d | (mas) | 22 ± 5 | 20 ± 5 | N/A | N/A | N/A |
Notes.
Seven-parameter model without orbital motion. Standard uncertainties were computed from the parameter variances that correspond to the diagonal of the problem’s inverse matrix and rescaled to take into account the residual dispersion.
Adopted solution (see Sect. 5).
See Sect. 3.1.
Relative proper motion that cannot directly be compared to the Hipparcos absolute proper motions.
References: (1) ESA (1997); (2) van Leeuwen (2007).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.