A whole sky study of quasars known population starting from the LQAC-2 compiled catalogue

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Table 2

Difference of coordinates of quasars per g magnitude range, between the original catalogues of the LQAC-2 and the re-calculated values from the LQRF (Andrei et al. 2009).

g magnitude	Nb. QSO’s			σ _Δαcosδ	σ _Δδ

14 <g< 15	12	0.029	0.023	0.208	0.120
15 <g< 16	84	−0.024	−0.015	0.095	0.084
16 <g< 17	701	−0.014	−0.015	0.095	0.095
17 <g< 18	5098	−0.020	−0.012	0.087	0.085
18 <g< 19	29 897	−0.021	−0.009	0.089	0.083
19 <g< 20	48 621	−0.017	−0.005	0.092	0.085
20 <g< 21	23 665	−0.008	0.005	0.104	0.096
21 <g< 22	8644	−0.004	0.005	0.104	0.092
22 <g< 23	812	−0.014	−0.001	0.115	0.095
23 <g< 24	222	−0.022	−0.006	0.117	0.112
24 <g< 25	147	−0.043	−0.006	0.115	0.143

Notes. Mean values and and standard deviations σ_αcosδ and σ_δ. Unit = 1′′.

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