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Table 3
Possible orbital solutions obtained from the analysis of the 55 Hipparcos Intermediate Astrometric Data of π1 Gru (HIP 110478), by scanning a P − e grid.
| e | P | χ 2 | F2 | ϖ | μ α ∗ | μ δ |
| (yr) | (mas) | (mas yr-1) | (mas yr-1) | |||
|
|
||||||
| 0.5 | 8.3 | 60.45 | 1.74 | 6.55 | 26.1 | –19.1 |
| 0.5 | 4.6 | 59.28 | 1.64 | 6.53 | 26.4 | –16.4 |
| 0.7 | 4.6 | 56.74 | 1.42 | 6.55 | 27.3 | –17.8 |
| 0.9 | 9.7 | 55.66 | 1.32 | 6.55 | 34.3 | –21.9 |
| 0.9 | 4.6 | 54.01 | 1.17 | 6.66 | 28.9 | –17.9 |
| 0.9 | 6.3 | 53.18 | 1.09 | 6.68 | 31.2 | –18.8 |
Notes. F2 is the goodness-of-fit, as defined by Eq. (11).
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