Open Access
Table 1
AGIS astrometric fit quality statistics.
| AGIS astrometric fit statistic | Description |
|---|---|
| ruwe | Re-normalized unit weight error |
| astrometric_gof_al (gofAL) | Goodness-of-fit statistic |
| astrometric_excess_noise (ε) | Excess noise of the source |
| astrometric_chi2_al (χ2) | Astrometric goodness-of-fit |
| astrometric_sigma5d_max (σ5d) | Longest semimajor axis of the 5D error ellipsoid |
Notes. A detailed description of these statistics is available in Lindegren et al. (2021) Section 5.1.
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