LQAC-4: Fourth release of the Large Quasar Astrometric Catalogue - Compilation of 443 725 objects including cross-identifications with Gaia DR1

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Table 2

Number of quasars present in each catalogue of the LQAC-4 compilation with the number of quasars in common with the Gaia DR1 catalogue and the corresponding percentage.

Catalogue	Flag	Nature	No. of	No. of	Perc.
name			quasars	quasars
			(LQAC-4)	common
				with Gaia
ICRF2	A	R	3414	2314	67.78
VLBA	B	R	7213	4287	68.25
VLA	C	R	1858	1228	60.71
JVAS	D	R	2118	1373	64.82
SDSS	E	O	384 834	218 720	56.83
2QZ	F	O	23 660	18 075	76.39
LRG	G	O	9058	2474	27.31
FIRST	H	O	969	909	93.80
HB	I	O & R	6720	5991	89.15

Notes. “O” and “R”are used respectively for optical and radio catalogue.

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