Table 2
Characteristics of the Gaia-CRF3 sources.
| Type of solution | Number of sources | G [mag] | Gbp − Grp [mag] | veff [µm−1] | RUWE | σpos, max [µas] | σµα* [µas yr−1] | σµδ [µas yr−1] |
|---|---|---|---|---|---|---|---|---|
| Five-parameter | 1 215 942 | 19.92 | 0.64 | 1.589 | 1.013 | 385 | 457 | 423 |
| Six-parameter | 398 231 | 20.46 | 0.92 | 1.541 | 1.044 | 749 | 892 | 832 |
| All | 1 614 173 | 20.06 | 0.68 | 1.585 | 1.019 | 447 | 531 | 493 |
Notes. Columns 3–9 give median values of the G magnitude, the GBP – Grp colour index, the effective wavenumber veff (or the pseudo-colour for six-parameter solutions), the astrometric quality indicator RUWE (see text), the positional uncertainty at epoch J2016.0 (semi-major axis of the error ellipse), and the uncertainties of the proper motion components in α and δ. The last line (‘All’) is for the whole set of Gaia-CRF3 sources.
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