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Table 2
Median standard deviations of the uncertainty distributions of the observables with which we convolve the ideal GUMS selected data to create more realistic catalogues.
| Observable | σTGAS | σDR2 (G = 17) | unit |
|---|---|---|---|
| RA | 0.23 | 0.10 | (mas) |
| Dec | 0.21 | 0.09 | (mas) |
| parallax | 0.32 | 0.12 | (mas) |
| μRA | 0.99 | 0.19 | (mas yr−1) |
| μDec | 0.83 | 0.17 | (mas yr−1) |
| vlos | 1.08 | 2.50 | (km s−1) |
| G | 3 × 10−2 | 9 × 10−3 | (mag) |
| GBP | 3 × 10−2 | 8 × 10−2 | (mag) |
| GRP | 3 × 10−2 | 7 × 10−2 | (mag) |
| [Fe/H] | 0.25 | 0.25 | (dex) |
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