Table 2
Mean and median value of the end-of-mission error in each observable, along with the upper (UQ) and lower (LQ) 25% quartile.
| Standard error | LQ | Median | Mean | UQ | ||
|
|
||||||
| Parallax (μas) | 80 | 140 | 147 | 210 | ||
| α∗ (μas) | 40 | 80 | 91 | 130 | ||
| δ (μas) | 50 | 100 | 103 | 150 | ||
| μα (μas yr-1) | 40 | 80 | 82 | 120 | ||
| μδ (μas yr-1) | 40 | 70 | 73 | 110 | ||
| G (mmag) | 2 | 3 | 3.0 | 4 | ||
| GBP (mmag) | 6 | 11 | 14.6 | 19 | ||
| GRP (mmag) | 5 | 7 | 7.7 | 10 | ||
| GRVS (mmag) | 6 | 11 | 13.2 | 18 | ||
| Radial velocity (km·s-1) | 3 | 7 | 8.0 | 13 | ||
| Extinction (mag) | 0.16 | 0.21 | 0.21 | 0.26 | ||
| Metallicity (Fe/H) | 0.46 | 0.57 | 0.57 | 0.73 | ||
| Surface gravity (log g) | 0.34 | 0.35 | 0.45 | 0.58 | ||
| Effective temperature (K) | 280 | 350 | 388 | 530 | ||
Notes. Since the error distributions are not symmetrical, the mean value should not be used directly, and is given only to give an idea of the approximate level of Gaia’s precision. The median G magnitude of all single stars is 18.9 mag.
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