2017MNRAS.466.1567L

Query : 2017MNRAS.466.1567L

2017MNRAS.466.1567L - Mon. Not. R. Astron. Soc., 466, 1567-1574 (2017/April-1)

Test of source selection for constructing a more stable and uniform celestial reference frame.

LIU N., LIU J.-C. and ZHU Z.

Abstract (from CDS):

We aim to evaluate the possibility of improving the International Celestial Reference System realization starting from the ICRF2 catalogue by investigating the coordinate time series of radio sources observed by the very long baseline interferometry between 1979 and 2016. Sources with long observational history are selected as the candidates and the least-squares fits with special handling of the weights are performed to derive the linear drifts of the source coordinates. Then the sources are sorted, based on the normalized linear drift (i) over the whole sky, and (ii) in four homolographic areas divided by declinations. The axial stability of the reference system and sky distribution defined by the selected sources are evaluated, which are acted as the criterion for the final source lists. With our improved source selection scheme, two groups of sources are proposed and considered suitable for defining a more stable and homogeneous celestial reference system compared to the second version of the current International Celestial Reference Frame (ICRF2). The number of sources in the final lists are 323 and 294, respectively, and the global rotations of the axes derived from apparent motion of the sources are about two times better than the ICRF2.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): catalogues - astrometry - reference systems - reference systems

VizieR on-line data: <Available at CDS (J/MNRAS/466/1567): table3.dat>

Simbad objects: 324

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Number of rows : 324
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME NCP reg 00 00 00 +90 00.0           ~ 216 0
2 TXS 2358+189 Bla 00 01 08.62156616 +19 14 33.8017136     20.5 20.50   ~ 41 1
3 QSO B0003+380 Bla 00 05 57.17538691 +38 20 15.1489639   19.4 18.10 17.16   ~ 155 1
4 QSO B0008-264 BLL 00 11 01.24673726 -26 12 33.3771340   19.53   19.64   ~ 86 1
5 ICRF J001331.1+405137 Sy1 00 13 31.13019909 +40 51 37.1441374   17.9 17.9     ~ 130 1
6 QSO J0019+2021 BLL 00 19 37.85449305 +20 21 45.6446105     20.6 19.70   ~ 90 1
7 QSO B0019+058 BLL 00 22 32.44121084 +06 08 04.2689202   19.2   19.07   ~ 152 1
8 ICRF J002829.8+200026 Bla 00 28 29.81848131 +20 00 26.7440093   19.5 19.5     ~ 76 1
9 PKS J0038-2459 Bla 00 38 14.73550152 -24 59 02.2352926   18.90   17.14   ~ 145 1
10 6C 003542+412035 Bla 00 38 24.84358446 +41 37 06.0002701   19.9 19.9 18.95   ~ 143 1
11 NGC 262 Bla 00 48 47.14147900 +31 57 25.0845702 14.04 13.90 13.06 8.53   ~ 778 2
12 QSO J0056+1625 BLL 00 56 55.29432895 +16 25 13.3409138       19.51   ~ 46 1
13 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
14 7C 0059+5808 Bla 01 02 45.76237340 +58 24 11.1366164   20.09 19.22 18.57 17.90 ~ 262 1
15 QSO B0107-610 QSO 01 09 15.47519907 -60 49 48.4601187     19.0 22.20   ~ 22 1
16 QSO B0109+224 BLL 01 12 05.8247044608 +22 44 38.785880796   16.00 15.66 15.47   ~ 373 2
17 6C 011029+493221 Bla 01 13 27.00680467 +49 48 24.0432101   18.4 18.4 17.80   ~ 130 1
18 UGC 773 BLL 01 13 43.14494773 +02 22 17.3162687   16.4 16.0 11.22   ~ 145 1
19 QSO B0113-1152 Bla 01 16 12.52201438 -11 36 15.4344705   18.5 18.5 17.72   ~ 204 1
20 QSO B0116-219 Bla 01 18 57.26217841 -21 41 30.1402631   19.40 19.0 19.37   ~ 144 1
21 QSO B0118-272 BLL 01 20 31.6628068344 -27 01 24.636341064   15.89 15.56 15.49   ~ 288 1
22 QSO B0119+041 Bla 01 21 56.86169274 +04 22 24.7342932   19.2 19.5 19.40   ~ 200 1
23 4C 25.05 Bla 01 26 42.79263357 +25 59 01.3001559     17.50 17.86   ~ 177 1
24 QSO B0135-2446 Bla 01 37 38.3462810880 -24 30 53.883832500   17.47 17.33 16.57   ~ 222 1
25 1RXS J014126.8-092857 BLL 01 41 25.83216015 -09 28 43.6742470   16.94 16.55 17.21   ~ 302 1
26 QSO B0146+056 Bla 01 49 22.37088634 +05 55 53.5685702   20.7 19.0 20.30   ~ 136 1
27 QSO B0149+218 Bla 01 52 18.05904204 +22 07 07.6997943     18 18.89   ~ 201 1
28 QSO B0150-334 Bla 01 53 10.1215560912 -33 10 25.860644724   17.75 18.60 17.2   ~ 84 1
29 6C 015907+721900 BLL 02 03 33.38495695 +72 32 53.6673482     19.2 15.90   ~ 102 1
30 QSO B0201+113 Bla 02 03 46.65705710 +11 34 45.4094619   19.5 19.5 19.41   ~ 216 1
31 QSO B0202-172 Bla 02 04 57.67433267 -17 01 19.8408671   18.18 18 17.19   ~ 263 1
32 7C 020209.69+315812.00 Bla 02 05 04.92536206 +32 12 30.0954703     17.40 17.40   ~ 246 1
33 QSO J0217+0144 Bla 02 17 48.95475095 +01 44 49.6990271   16.74 16.09 18.51 13.29 ~ 455 1
34 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
35 QSO B0220-349 Bla 02 22 56.40164366 -34 41 28.7302247   21.39   21.10   ~ 79 1
36 4C 06.11 Bla 02 24 28.42818961 +06 59 23.3415566   20.8 20.0 17.78   ~ 172 1
37 QSO B0227-369 Bla 02 29 28.44905708 -36 43 56.8223412     19.0 20.4   ~ 113 1
38 QSO B0235-618 Bla 02 36 53.24574011 -61 36 15.1835463   18.18 18.5 17.62   ~ 117 1
39 ICRF J024224.2+174258 BLL 02 42 24.26826371 +17 42 58.8491818     21.31 19.20   ~ 37 1
40 QSO B0252-549 Bla 02 53 29.1803201880 -54 41 51.437517216   17.65 19.3 16.79   ~ 141 1
41 QSO B0256+075 Bla 02 59 27.07662321 +07 47 39.6429924   18 18 16.9   ~ 210 1
42 4C 47.08 BLL 03 03 35.24221958 +47 16 16.2754726   17.54 16.95 16.2   ~ 292 1
43 NVSS J030642+624302 Rad 03 06 42.65955141 +62 43 02.0241670           ~ 32 1
44 NGC 1218 Sy1 03 08 26.22380005 +04 06 39.3007808   12.84       ~ 413 0
45 QSO B0306+101 Bla 03 09 03.62349423 +10 29 16.3409179   18.45   19.91   ~ 214 1
46 QSO B0309+411 Bla 03 13 01.96212044 +41 20 01.1834497   18.0   14.59   ~ 178 1
47 ICRF J031951.2+190131 Bla 03 19 51.25671878 +19 01 31.2911047   19   17.76   ~ 52 1
48 QSO J0325+2224 Bla 03 25 36.81435345 +22 24 00.3656161     18.90 19.14   ~ 135 1
49 QSO B0326+277 QSO 03 29 57.66941020 +27 56 15.4992655   18.2 17.5     ~ 66 1
50 ICRF J033453.3+080014 Bla 03 34 53.31667674 +08 00 14.4191335     21.5 21.41   ~ 59 1
51 QSO B0334-546 QSO 03 35 53.92483282 -54 30 25.1149291   20.0 20.0 17.78   ~ 46 1
52 QSO B0336-0156 Bla 03 39 30.93778633 -01 46 35.8041892   18.96 18.41 17.33   ~ 598 1
53 QSO B0338-214 BLL 03 40 35.60785848 -21 19 31.1721373   16.04 17.1 17.07   ~ 182 1
54 6C 034014+361233 Bla 03 43 28.95241581 +36 22 12.4297151     20.80 19.78   ~ 87 1
55 ICRF J034423.1+155943 QSO 03 44 23.17215743 +15 59 43.3691667           ~ 37 1
56 ICRF J034506.4+145349 Bla 03 45 06.41653204 +14 53 49.5582378       20.00   ~ 53 1
57 QSO B0346-279 Bla 03 48 38.14457039 -27 49 13.5657855   20.08 18.63 17.72   ~ 219 1
58 QSO B0347-211 Bla 03 49 57.82667348 -21 02 47.7416093   20.48 21.10 20.297   ~ 135 1
59 QSO B0400-319 Bla 04 02 21.26599921 -31 47 25.9455847   20.2   20.75   ~ 111 1
60 QSO B0400+258 Bla 04 03 05.58608082 +26 00 01.5027775     18 19.00   ~ 220 1
61 QSO B0403-132A BLL 04 05 34.00339116 -13 08 13.6909309   17.37 17.09 16.6   ~ 384 1
62 PKS 0405-123 Bla 04 07 48.4309841856 -12 11 36.659928408   15.09 14.86 14.7   ~ 531 1
63 QSO B0406-127 Bla 04 09 05.76972871 -12 38 48.1438174   18.5 18.5 18.35   ~ 74 1
64 QSO B0406+121 BLL 04 09 22.00871072 +12 17 39.8476330   20.5   18.27   ~ 112 1
65 QSO B0414-189 Bla 04 16 36.54444889 -18 51 08.3402457   18.89 18.0 18.51   ~ 195 1
66 6C 041558+394837 Bz? 04 19 22.54951530 +39 55 28.9775938           ~ 25 1
67 NVSS J042355+415003 BLL 04 23 56.00979158 +41 50 02.7129362   19   19.2   ~ 123 1
68 QSO B0422-380 Bla 04 24 42.24370316 -37 56 20.7843026   17.96 18.08 18.03   ~ 105 1
69 QSO B0422+004 BLL 04 24 46.8421990080 +00 36 06.329375028 16.15 15.94 16.98     ~ 378 1
70 WISEA J042840.41-375619.3 BLL 04 28 40.4241894720 -37 56 19.580735832   18.96 19.0 17.21   ~ 343 1
71 NVSS J042952+272437 BLL 04 29 52.96076689 +27 24 37.8761387   18.6       ~ 44 1
72 QSO B0434-188 Bla 04 37 01.48273617 -18 44 48.6135530   19.11 19.0 19.62   ~ 111 1
73 QSO B0438-43 Bla 04 40 17.17997576 -43 33 08.6043290   19.31 19.5 18.2   ~ 302 2
74 ICRF J044331.6+344106 Bz? 04 43 31.63519983 +34 41 06.6640402           ~ 41 1
75 QSO B0454-810 Bla 04 50 05.44021015 -81 01 02.2314265   19.31 19.2 18.30   ~ 125 1
76 QSO B0454-463 Bla 04 55 50.77248730 -46 15 58.6797903   17.89 17.4 16.87   ~ 229 1
77 QSO B0454+844 BLL 05 08 42.36351222 +84 32 04.5441733     16.5 18.95   ~ 250 1
78 QSO B0507+179 Bla 05 10 02.36912937 +18 00 41.5815635   20.0 19.0 19.09   ~ 470 1
79 ICRF J051803.8+205452 QSO 05 18 03.82451380 +20 54 52.4973957           ~ 23 1
80 QSO B0522-611 Bla 05 22 34.42547703 -61 07 57.1337711   18.46 18.05 18.05   ~ 96 1
81 ESO 362-21 BLL 05 22 57.98464178 -36 27 30.8512953   15.26 14.62 14.48   ~ 873 2
82 QSO B0524-460 Bla 05 25 31.4000571816 -45 57 54.684984348   17.3 17.3 15.8   ~ 109 1
83 6C 052927+482100 Bla 05 33 15.86579115 +48 22 52.8077787     19.90     ~ 150 1
84 QSO B0534-611 Bla 05 34 35.77249760 -61 06 07.0732746     19.5 19.58   ~ 44 1
85 NVSS J053942+143345 Bla 05 39 42.36599322 +14 33 45.5616887           ~ 104 1
86 QSO B0539-057 Bla 05 41 38.08336552 -05 41 49.4283917     20.4 20.70   ~ 279 1
87 NVSS J054734+272157 Rad 05 47 34.14892156 +27 21 56.8425747           ~ 44 1
88 QSO B0549-575 Bla 05 50 09.58019747 -57 32 24.3965358   20.26 19.5 18.81   ~ 56 1
89 6C 054850+375340 QSO 05 52 17.93691536 +37 54 25.2824392           ~ 32 1
90 4C 24.11 QSO 06 04 55.12138831 +24 29 55.0364698           ~ 40 1
91 6C 060237+672110 Bla 06 07 52.67161421 +67 20 55.4100806   20.6 20.6 20.21   ~ 103 1
92 QSO B0605-0834 BLL 06 07 59.69924014 -08 34 49.9783246     17.60 17.70   ~ 487 1
93 QSO J0613+1306 Bla 06 13 57.69275201 +13 06 45.4008349       19.5   ~ 61 1
94 8C 0609+607 Bla 06 14 23.86617701 +60 46 21.7559176   20 19.1 18.8   ~ 74 1
95 ICRF J061716.9+570116 BLL 06 17 16.92256638 +57 01 16.4232088       17   ~ 84 1
96 6C 062051+385831 Bla 06 24 19.02128805 +38 56 48.7360344   20.0 20.0 19.24   ~ 83 1
97 6C 061543+820331 Bla 06 26 03.00623818 +82 02 25.5679443   17.5 17.5 18.52   ~ 165 1
98 ICRF J062923.7-195919 BLL 06 29 23.76186296 -19 59 19.7236825   20.43 18.6 20.68   ~ 141 1
99 QSO B0629-418 Bla 06 31 11.99804084 -41 54 26.9466088   18.78 19.3 18.9   ~ 63 1
100 ICRF J063920.9-334600 BLL 06 39 20.90464 -33 46 00.1134     20.50 20.30   ~ 38 1
101 QSO B0636+68 BLL 06 42 04.2572705040 +67 58 35.620484340     16.46 16.01   ~ 234 1
102 QSO B0646-306 Bla 06 48 14.09646706 -30 44 19.6597807   19.53 20.4 18.75   ~ 114 1
103 QSO J0650-1637 QSO 06 50 24.58185949 -16 37 39.7255562   22.09       ~ 125 1
104 7C 071413.19+454336.00 Bla 07 17 51.85241931 +45 38 03.2608601   18.5   17.59   ~ 60 1
105 QSO B0723-007 BLL 07 25 50.63991258 -00 54 56.5430511   17.39 16.57 15.82   ~ 284 1
106 ICRF J072611.7+791131 Bz? 07 26 11.73523889 +79 11 31.0162113       23.08   ~ 53 0
107 ICRF J073256.2+254838 Bla 07 32 56.27526878 +25 48 38.7956244   18.75 18.46 19.08   ~ 45 1
108 QSO J0738+1742 BLL 07 38 07.39375312 +17 42 18.9981506   16.76 16.22 15.78   ~ 1045 1
109 QSO B0738-674 Bla 07 38 56.49624352 -67 35 50.8260320     19.8 20.00   ~ 56 1
110 QSO B0738+491 Bla 07 42 02.74895098 +49 00 15.6089311   22.33 21.75 21.33   ~ 62 1
111 QSO J0743-6726 Bla 07 43 31.6117092000 -67 26 25.547011008   16.71 16.37     ~ 149 1
112 4C -00.28 Bla 07 45 54.08232685 -00 44 17.5399048   18 17.1 16.69   ~ 200 1
113 ICRF J074640.4+273459 QSO 07 46 40.43231234 +27 34 59.0470434       21.14   DC 49 1
114 QSO B0754+10 BLL 07 57 06.64295154 +09 56 34.8522544   15.43 15.00 15.99   ~ 461 1
115 QSO B0805-077 Bla 08 08 15.53603763 -07 51 09.8865298     19.80 16.71   ~ 291 1
116 QSO B0808+019 BLL 08 11 26.70731711 +01 46 52.2201568   17.58 17.2 17.96   ~ 281 1
117 7C 081451.89+423206.00 BLL 08 18 15.99961476 +42 22 45.4148987   18.88 18.18 17.81   ~ 429 1
118 QSO B0826-373 QSO 08 28 04.78023133 -37 31 06.2815112   16       ~ 63 1
119 QSO B0829+047 BLL 08 31 48.8770033992 +04 29 39.086842884   17.10 16.4 14.55   ~ 511 2
120 [VV98] J085009.6-121334 Bla 08 50 09.63563375 -12 13 35.3761390     16.80 16.02   ~ 162 1
121 4C 58.17 Bla 08 54 41.99641612 +57 57 29.9391251   18.56 18.18 17.43   ~ 249 1
122 6C 085940+470301 Bla 09 03 03.99010563 +46 51 04.1374172   19.90 19.44 18.7   ~ 285 1
123 4C 01.24B Bla 09 09 10.09159883 +01 21 35.6176206   17.63 17.29 17.04   ~ 454 2
124 Ton 397 BLL 09 15 52.4015550384 +29 33 24.042671532   16.79 16.39 16.085   ~ 238 1
125 6C 091740+445437 Bla 09 20 58.45848666 +44 41 53.9850947   18.40 18.16 16.55   ~ 407 1
126 6C 091739+622838 Bla 09 21 36.23107643 +62 15 52.1803510   19.76 19.26 18.96   ~ 394 1
127 6C 092005+390241 Bz? 09 23 14.45293735 +38 49 39.9100905           ~ 51 1
128 4C 40.24 Bla 09 48 55.33815103 +40 39 44.5869471   18.31 18.02 17.85   ~ 379 1
129 7C 094933.0+352656 Bla 09 52 32.02616886 +35 12 52.4030492   19.97 19.79 18.85   ~ 88 1
130 QSO B0952+179 QSO 09 54 56.82361677 +17 43 31.2221518   17.31 17.23     ~ 222 1
131 Ton 469 Bla 09 58 20.9496221568 +32 24 02.208417372   15.88 15.78 15.51   ~ 442 1
132 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 771 1
133 ICRF J100614.0-501813 QSO 10 06 14.00931655 -50 18 13.4707354   20.78       ~ 31 1
134 Ton 490 Bla 10 13 53.42877250 +24 49 16.4406795   16.59 16.57 15.85   ~ 200 1
135 4C 23.24 Bla 10 14 47.06546648 +23 01 16.5707383   17.85 17.78 16.22   ~ 229 1
136 7C 1015+3557 Bla 10 18 10.98810472 +35 42 39.4409041   18.62 18.07 17.65   ~ 212 1
137 [VV2006] J101827.8+053029 Bla 10 18 27.84828610 +05 30 29.9620200   19.63 19.33 20.05   ~ 112 1
138 4C 40.25 Bla 10 23 11.56566843 +39 48 15.3853581   17.5 17.5 17.18   ~ 182 1
139 7C 1030+4131 Bla 10 33 03.70787172 +41 16 06.2329333   20.01 19.64 19.97   ~ 234 1
140 QSO B1032-199 Bla 10 35 02.15531760 -20 11 34.3596240   18.10 19.0 18.53   ~ 117 1
141 ICRF J104309.0+240835 BLL 10 43 09.03578135 +24 08 35.4094642   17.98 17.32 16.40   ~ 171 1
142 6C 103912+811006 Bla 10 44 23.06257022 +80 54 39.4430485     16.5 18.29   ~ 234 1
143 ICRF J104455.9+065538 Sy1 10 44 55.91124811 +06 55 38.2624955   19.81 19.35     ~ 73 1
144 QSO J1051-3138 Bla 10 51 04.77754627 -31 38 14.3076867   18.5 19.4 19   ~ 61 1
145 7C 104907.3+213551 Bla 10 51 48.78908056 +21 19 52.3137849     18.5 17.72   ~ 157 1
146 4C 01.28 BLL 10 58 29.60520810 +01 33 58.8237454   18.74 18.28 16.68   ~ 828 2
147 QSO B1059+282 Bla 11 02 14.28846235 +27 57 08.6894771   19.70 19.59 19.65   ~ 75 1
148 QSO B1104-445 Bla 11 07 08.69412105 -44 49 07.6183013   17.84 18.2 17.37   ~ 260 1
149 QSO B1111+149 Bla 11 13 58.69508613 +14 42 26.9526507   17.89 17.57 17.41   ~ 121 1
150 QSO B1116-462 Bla 11 18 26.9574189144 -46 34 15.001482468   17.54 17.00     ~ 134 1
151 4C 12.39 Bla 11 18 57.30143432 +12 34 41.7179609   19.39 19.25 19.10   ~ 267 1
152 CTD 74 Bla 11 25 53.71191677 +26 10 19.9787016   18.62 18.51 18.39   ~ 158 1
153 [VV2006] J113320.1+004052 Bla 11 33 20.05579109 +00 40 52.8371482   18.5   18.88   ~ 76 2
154 [VV2006] J113624.5-033029 Bla 11 36 24.57693472 -03 30 29.4966741   19.81 19.47 18.7   ~ 56 1
155 QSO B1143-245 Bla 11 46 08.1033450360 -24 47 32.900532360   17.97 18.0 17.20   ~ 129 1
156 7C 114524.8+265253 Bla 11 47 59.76390934 +26 35 42.3323813   18.75 18.54 17.06   ~ 71 1
157 7C 1147+2434 BLL 11 50 19.21218244 +24 17 53.8352318   16.26 15.74 15.80   ~ 294 1
158 8C 1150+812 Bla 11 53 12.49922322 +80 58 29.1545718     19.40 18.54   ~ 248 1
159 LB 2136 Bla 11 53 24.46663994 +49 31 08.8301372   17.94 17.66     ~ 529 1
160 ICRF J121503.9+165437 Bla 12 15 03.97914492 +16 54 37.9567979   20.5 20.0 18.94   ~ 99 1
161 QSO B1213-172 QSO 12 15 46.75176509 -17 31 45.4031219     21.40 17.50   ~ 151 1
162 7C 121325.0+350452 Bla 12 15 55.60104732 +34 48 15.2206367     20.0 19.4   ~ 111 1
163 6C 121638+484640 Bla 12 19 06.41475008 +48 29 56.1647529   21.22 20.49 19.90   ~ 146 1
164 7C 1219+2830 BLL 12 21 31.6904439888 +28 13 58.500308172   16.81 16.11 14.24   ~ 924 1
165 8C 1221+809 BLL 12 23 40.49375661 +80 40 04.3404140     19.0 19.3   ~ 119 1
166 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
167 7C 122619.80+372307.00 Bla 12 28 47.42367714 +37 06 12.0958131   18.74 18.28 17.91   ~ 96 1
168 QSO B1236+077 Bla 12 39 24.58833099 +07 30 17.1890748   19.1 20.1 17.92   ~ 148 1
169 ICRF J124553.7-161645 QSO 12 45 53.74227041 -16 16 45.7052308   22.03       ~ 39 1
170 QSO J1246-0730 Bla 12 46 04.23211565 -07 30 46.5746985   17.6 18.0 18.2   ~ 198 1
171 QSO J1246-2547 Bla 12 46 46.80203943 -25 47 49.2889822   17.65 17.41 16.96 15.5 ~ 314 1
172 QSO B1252+119 Bla 12 54 38.25561478 +11 41 05.8950431   16.99 16.64 16.76   ~ 284 1
173 QSO B1251-713 QSO 12 54 59.92148599 -71 38 18.4366378   20.55       ~ 54 1
174 QSO B1256-1743 Bla 12 58 38.30170609 -18 00 03.1244242   20.50 20.20 20.6   ~ 81 1
175 ICRF J130020.9+141718 Bla 13 00 20.91882346 +14 17 18.5316374   19.50 19.17 18.9   ~ 90 1
176 QSO J1305-1033 Bla 13 05 33.0150535680 -10 33 19.430383680   15.18 15.23 14.46   ~ 624 1
177 5C 12.291 Bla 13 08 23.70913457 +35 46 37.1640036   20.95 20.22 19.43   ~ 110 1
178 QSO B1307+121 BLL 13 09 33.93245274 +11 54 24.5530422 18.95 18.72 18.28 18.16   ~ 158 1
179 6C 1308+5529 Bla 13 11 03.21080610 +55 13 54.3224281   19.86 19.49 20.41   ~ 116 1
180 QSO B1313-333 Bla 13 16 07.98594757 -33 38 59.1726741   18.04 20.0 17.23   ~ 267 1
181 7C 131517.8+344104 Bla 13 17 36.49418376 +34 25 15.9324219   18.92 18.62 19.03   ~ 179 1
182 NAME VLBI 1325-558 QSO 13 29 01.14491196 -56 08 02.6655453           ~ 84 3
183 6C 132700+502509 QSO 13 29 05.80271152 +50 09 26.4008812     18.10     ~ 49 1
184 7C 134218.60+661725.00 Bla 13 43 45.95958219 +66 02 25.7451139   19.93 19.67 18.87   ~ 78 1
185 4C 53.28 Bla 13 49 34.65661554 +53 41 17.0400909   17.95 17.67 17.06   ~ 151 1
186 7C 134837.00+304924.00 Bla 13 50 52.73622485 +30 34 53.5906894   18.73 18.34 18.80   ~ 152 1
187 QSO B1352-104 Bla 13 54 46.51868700 -10 41 02.6561979   18.20 18.4     ~ 175 1
188 QSO B1354-174 Bla 13 57 06.07420758 -17 44 01.9049954   19 19 18   ~ 93 1
189 QSO J1357-1527 Bla 13 57 11.24498272 -15 27 28.7868604   18.13   18.40   ~ 147 1
190 QSO B1406-076 Bla 14 08 56.48120623 -07 52 26.6665312   20.3 18.4     ~ 336 1
191 QSO B1406-267 Bla 14 09 50.16978505 -26 57 36.9804663   21.94   20.51   ~ 60 1
192 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 630 1
193 6C 141743+383524 Bla 14 19 46.61376262 +38 21 48.4750288   19.88 19.66 19.25   ~ 195 1
194 ICRF J141959.2+270625 Bla 14 19 59.29707763 +27 06 25.5527638   19.50 19.04 19.49   ~ 67 1
195 QSO B1423+146 Bla 14 25 49.01801221 +14 24 56.9018642   18.35 17.96 19.54   ~ 57 1
196 7C 143220.1+200536 Bla 14 34 39.79336355 +19 52 00.7357582   20.40 19.81 19.07   ~ 77 1
197 QSO B1435-218 Bla 14 38 09.46940207 -22 04 54.7484420   18.75   17.30   ~ 76 1
198 7C 1441+2514 Bla 14 43 56.89220390 +25 01 44.4907165   19.5   19.7   ~ 179 1
199 QSO B1445+101 Bla 14 45 16.46525080 +09 58 36.0727447   18.58 17.78     ~ 408 2
200 ICRF J144553.3-162901 BLL 14 45 53.37630149 -16 29 01.6191263   20.5   20.09   ~ 70 1
201 QSO B1445-161 Bla 14 48 15.05414259 -16 20 24.5488432   20.5 18.9 19.4   ~ 72 1
202 6C 145908+480258 BLL 15 00 48.65423270 +47 51 15.5381288   20.86 20.21 19.63   ~ 100 1
203 QSO B1502+1041 Bla 15 04 24.97978391 +10 29 39.1985309   18.97 18.56 18.94   ~ 634 1
204 QSO B1504-167 Bla 15 07 04.78696269 -16 52 30.2671543   18.40 18.50 17.00   ~ 237 1
205 4C -05.64 Bla 15 10 53.59142427 -05 43 07.4175000   17.44 17.21     ~ 249 1
206 QSO B1511-100 Bla 15 13 44.89343054 -10 12 00.2648692   18.5 18.5 17.35   ~ 119 1
207 QSO B1514+197 BLL 15 16 56.79616460 +19 32 12.9919519 18.59 18.19 18.7 17.51   ~ 187 1
208 ESO 514-1 BLL 15 17 41.8134049824 -24 22 19.482207024   15.13 14.00 13.95   ~ 815 3
209 9C J1521+4336 Bla 15 21 49.61387806 +43 36 39.2681695   19.30 18.95 18.09   ~ 129 1
210 4C 14.60 BLL 15 40 49.49151924 +14 47 45.8846989   17.72 17.30 17.240   ~ 448 1
211 QSO B1547+507 Bla 15 49 17.46855793 +50 38 05.7880702   18.89 18.74 18.16   ~ 140 1
212 QSO B1546+0246 Bla 15 49 29.43684740 +02 37 01.1632556   17.57 17.42 15.53   ~ 395 1
213 QSO B1549-790 Bla 15 56 58.86979525 -79 14 04.2817241   18.80 18.800 17.84   ~ 221 1
214 QSO J1559+0304 Bla 15 59 30.97261910 +03 04 48.2567339     19.8 19.77   ~ 86 1
215 QSO J1559-2442 Bla 15 59 41.40908144 -24 42 38.8322303   19.33 19.0 18.7   ~ 74 1
216 ICRF J160341.9+110548 BLL 16 03 41.93125418 +11 05 48.6791330   18.41 17.82 16.66   ~ 77 2
217 PMN J1605-1139 QSO 16 05 17.53165742 -11 39 26.8311169           ~ 53 1
218 ICRF J160734.7-333108 QSO 16 07 34.76234762 -33 31 08.9134699   20.5       ~ 39 1
219 ICRF J161042.0+241449 Bla 16 10 42.02677563 +24 14 49.0115848   20.79 20.33 19.24   ~ 45 1
220 ICRF J161630.6-710831 QSO 16 16 30.64150379 -71 08 31.4541912   20.7   20.71   ~ 30 1
221 QSO B1619-680 Bla 16 24 18.4370218920 -68 09 12.495140208   17.05 18.0 16.40   ~ 74 1
222 7C 1623+5748 Bla 16 24 24.80756989 +57 41 16.2809410   18.8   19.74   ~ 49 1
223 QSO B1622-253 Bla 16 25 46.89164287 -25 27 38.3268734   21.3 20.6 19.60   ~ 381 1
224 QSO J1626-2951 Bla 16 26 06.02084013 -29 51 26.9712990   18.41 20.5 17.6   ~ 452 1
225 ICRF J162854.6-615236 QSO 16 28 54.68980334 -61 52 36.3980187           ~ 24 1
226 NGC 6251 Bla 16 32 31.96989253 +82 32 16.3999044 15.24 14.66 12.89 7.62   ~ 772 1
227 4C 38.41 Bla 16 35 15.49297809 +38 08 04.5005995   18.14 17.97 17.25   ~ 906 1
228 6C 163718+572618 Bla 16 38 13.45629995 +57 20 23.9789828     16.90 16.94   ~ 381 1
229 [VV2006] J164125.2+225704 Bla 16 41 25.22756511 +22 57 04.0327855   19.54 19.30 19.56   ~ 73 1
230 4C 69.21 Bla 16 42 07.84851261 +68 56 39.7563611   19.723   19.219   ~ 326 1
231 ICRF J165039.5-294346 QSO 16 50 39.54413 -29 43 46.9548   19.01       ~ 41 1
232 7C 165116.19+390743.00 Bla 16 52 58.50958176 +39 02 49.8221906   22.23 21.54 20.57   ~ 53 1
233 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
234 QSO J1700-2610 QSO 17 00 53.15406418 -26 10 51.7253944   16.50       ~ 119 2
235 ICRF J170124.6+395437 BLL 17 01 24.63481525 +39 54 37.0915503   17.50 17.07 16.26   ~ 61 1
236 ICRF J170144.8-562155 QSO 17 01 44.85812893 -56 21 55.9026861           ~ 28 1
237 ICRF J170336.5-621240 BLL 17 03 36.54121471 -62 12 40.0085591   18.73   17.58   ~ 111 1
238 ICRF J170934.3-172853 QSO 17 09 34.34539302 -17 28 53.3650596     17.5 20.90   ~ 50 1
239 ICRF J173340.7-793555 Bla 17 33 40.70024557 -79 35 55.7165873   18.67   18.18   ~ 51 1
240 7C 173240.70+385949.00 BLL 17 34 20.57853650 +38 57 51.4430945   19.5 19 19.00   ~ 232 1
241 7C 173836.20+473929.00 BLL 17 39 57.12907095 +47 37 58.3614787   18.5 19.5 18.88   ~ 147 2
242 QSO B1741-038 Bla 17 43 58.85613537 -03 50 04.6167326     20.40 17.98   ~ 583 1
243 NGC 6454 AGN 17 44 56.60706225 +55 42 17.1610560   13.0 13.5     ~ 83 1
244 QSO B1743+173 Bla 17 45 35.20817856 +17 20 01.4233245     19.0 18.21   ~ 76 1
245 4C 62.29 QSO 17 46 14.03413499 +62 26 54.7383195   20.91 19.51     ~ 124 1
246 7C 174604.90+465932.00 BLL 17 47 26.64727228 +46 58 50.9262456     21.30 19.17   ~ 64 1
247 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 1007 1
248 QSO J1753+2848 Bla 17 53 42.47364223 +28 48 04.9388788   19.6 19.60 20.28   ~ 118 1
249 QSO J1756+1535 BLL 17 56 53.10213899 +15 35 20.8265134       17.17   ~ 67 2
250 7C 175844.60+384828.00 Bla 18 00 24.76536016 +38 48 30.6974570   17.8 17.98 17.04   ~ 161 1
251 QSO B1758-651 QSO 18 03 23.49665086 -65 07 36.7613089   18.18       ~ 67 1
252 Z 340-35 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 909 1
253 LB 1086 Bla 18 08 21.88588528 +45 42 20.8664210   19.0 19.3 19.20   ~ 61 1
254 ICRF J180957.8-455241 BLL 18 09 57.87174351 -45 52 41.0141114   16.89   15.06   ~ 60 1
255 7C 1823+6856 BLL 18 23 32.85390331 +68 57 52.6125366       19   ~ 65 1
256 4C 56.27 BLL 18 24 07.06837171 +56 51 01.4908155   18.9 19.30 16.48   ~ 510 1
257 ICRF J182912.4-581355 Bla 18 29 12.40235306 -58 13 55.1618061   19.26   18.80   ~ 50 1
258 4C 28.45 QSO 18 32 50.18562435 +28 33 35.9552173   16.91 17.16     ~ 137 1
259 QSO B1831-711 Bla 18 37 28.7148576048 -71 08 43.554135084   17.89 17.5 16.66   ~ 96 1
260 3C 390.3 Bla 18 42 08.9904975672 +79 46 17.127835104   16.06 15.38     ~ 1381 1
261 8C 1842+681 BLL 18 42 33.64168679 +68 09 25.2277637     17.9 18.01   ~ 149 1
262 QSO B1903-802 Bla 19 12 40.01907746 -80 10 05.9464844   19.83 19.0 19.54   ~ 89 1
263 [VV2006] J192332.2-210433 Bla 19 23 32.18981392 -21 04 33.3331234   15.32 17.50 16.70   ~ 180 3
264 QSO B1921-293 BLL 19 24 51.05595254 -29 14 30.1210248   18.71 18.21 15.07   ~ 918 1
265 QSO B1925-610 Bla 19 30 06.16008387 -60 56 09.1841871   20.57   19.86   ~ 64 1
266 NVSS J193124+224332 Rad 19 31 24.91677020 +22 43 31.2585148           ~ 35 1
267 QSO B1936-155 Bla 19 39 26.65775171 -15 25 43.0584711   19.44 20.30 18.80   ~ 180 1
268 QSO J1940-6907 QSO 19 40 25.52815148 -69 07 56.9717355   18.36 18.8     ~ 118 1
269 QSO B1958-179 Bla 20 00 57.09043927 -17 48 57.6726139   18.02 18.60 15.33   ~ 288 1
270 ICRF J200241.9+150114 QSO 20 02 41.99923145 +15 01 14.5740653           ~ 24 1
271 8C 2007+777 BLL 20 05 30.9987913056 +77 52 43.248139536     16.5 17.36   ~ 474 1
272 QSO B2005+40 Bla 20 07 44.9449261536 +40 29 48.603352020   18.5 19.00 20.3   ~ 319 1
273 QSO J2016+1632 BLL 20 16 13.86003062 +16 32 34.1130371       17.29   ~ 46 1
274 4C 74.25 Bla 20 17 13.07929657 +74 40 47.9999016     18.1     ~ 59 1
275 4C 31.56 QSO 20 23 19.01734326 +31 53 02.3060318           ~ 125 1
276 QSO B2029+121 BLL 20 31 54.99426552 +12 19 41.3401260     18.5 17.42   ~ 189 1
277 QSO B2037-253 Bla 20 40 08.77291682 -25 07 46.6634680   18.5 18.5 19.40   ~ 77 1
278 QSO B2052-474 Bla 20 56 16.35980507 -47 14 47.6277179   18.29 19.1 18.07   ~ 341 1
279 QSO B2058-297 Bla 21 01 01.65998656 -29 33 27.8362907   18 18 18.90   ~ 65 1
280 ICRF J210841.0+143027 Bla 21 08 41.03214665 +14 30 27.0125088     20.0 19.85   ~ 43 1
281 QSO J2115+295 Bla 21 15 29.41345155 +29 33 38.3669390     19.5 19.26   ~ 201 1
282 [VV96] J212630.7-460548 Bla 21 26 30.70426552 -46 05 47.8920927   18.12 18     ~ 85 2
283 [VV98] J213019.1-092737 Bla 21 30 19.08825970 -09 27 37.4351827       20.10   ~ 55 1
284 4C -02.81 BLL 21 34 10.30958988 -01 53 17.2389056   18.6 19.00 18.87   ~ 431 1
285 QSO B2136+1410 Bla 21 39 01.30926630 +14 23 35.9921774     18.90 18.22   ~ 264 1
286 QSO B2141+1730 Bla 21 43 35.54456275 +17 43 48.7875890   15.91 15.73 15.17   ~ 418 1
287 QSO B2142+110 BLL 21 45 18.77506615 +11 15 27.3123630   18.35 18.20 16.29   ~ 98 2
288 QSO B2144+093 Bla 21 47 10.16296704 +09 29 46.6722487   18.72 18.54 16.51   ~ 225 1
289 QSO B2145+082 QSO 21 47 55.21938137 +08 30 11.8968089   19.5 19.5     ~ 35 1
290 QSO B2149+056 Bla 21 51 37.87549026 +05 52 12.9545152   23.700 22.050 20.850   ~ 120 1
291 QSO B2149-306 Bla 21 51 55.52396937 -30 27 53.6980880   17.95 18.0 17.48   ~ 281 1
292 QSO B2150+173 BLL 21 52 24.81939266 +17 34 37.7950210     17.9 17.98   ~ 186 2
293 ICRF J215728.8+312701 Bla 21 57 28.82388667 +31 27 01.3517551       20.11   ~ 114 1
294 QSO B2155-152 Bla 21 58 06.28188411 -15 01 09.3284729   18.63 18.30 17.79   ~ 355 1
295 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1
296 QSO B2204-54 Bla 22 07 43.73329058 -53 46 33.8199643   18.45 18.0 18.20   ~ 178 1
297 QSO B2208-13 BLL 22 11 24.0995948736 -13 28 09.723099864   16.7 17.00 16.7   ~ 121 1
298 ICRF J221810.9+152035 Bla 22 18 10.91390230 +15 20 35.7174349       19.33   ~ 38 1
299 QSO B2227-0848 Bla 22 29 40.08433313 -08 32 54.4355294   17.80 17.41 17.81   ~ 391 1
300 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2
301 QSO B2232-488 Bla 22 35 13.23657823 -48 35 58.7945202   17.61 17.2     ~ 150 1
302 6C 223524+730738 Bla 22 36 38.59700566 +73 22 52.6622929       19.90   ~ 45 1
303 [VV2006] J224553.7+050057 Bla 22 45 53.65411290 +05 00 56.9621498     18.40 18.41   ~ 48 1
304 QSO B2244-372 QSO 22 47 03.91732859 -36 57 46.3041035   18.70 19     ~ 59 1
305 [VV98] J225504.2-084404 Bla 22 55 04.23979 -08 44 04.0213       20.5   ~ 54 1
306 QSO B2253+417 QSO 22 55 36.70783988 +42 02 52.5326109     18.8     ~ 82 1
307 QSO B2254+0727 BLL 22 57 17.30311778 +07 43 12.3025633   17.07 16.36     ~ 317 1
308 4C 10.70 Bla 23 10 28.51773620 +10 55 30.6967124   19   19.63   ~ 46 1
309 6C 230937+452727 Bla 23 11 47.40897544 +45 43 56.0164210       19.19   ~ 70 1
310 ICRF J232154.9+320407 Bla 23 21 54.95598750 +32 04 07.6225103     18 20   ~ 115 1
311 4C 27.50 Bla 23 21 59.86222252 +27 32 46.4436999   19 19.0 18.8   ~ 160 1
312 ICRF J232220.3+444542 QSO 23 22 20.35808015 +44 45 42.3536071       20.70   ~ 43 1
313 ICRF J232225.9+505751 Bla 23 22 25.98217576 +50 57 51.9636751       18.6   ~ 72 1
314 QSO B2320-035 Bla 23 23 31.95375055 -03 17 05.0238540   18.6   18.16   ~ 229 2
315 QSO B2325+093 Bla 23 27 33.58055652 +09 40 09.4627185   18.5 19.5 18.26   ~ 211 1
316 QSO B2325-150 Bla 23 27 47.96426891 -14 47 55.7511114   19 19.0 18.8   ~ 65 1
317 QSO B2326-477 Bla 23 29 17.7043623168 -47 30 19.113949332   16.93 16.79 16.30   ~ 208 1
318 QSO B2329-16 BLL 23 31 38.65243833 -15 56 57.0098054   20.72   20.65   ~ 141 1
319 ICRF J233355.2-234340 BLL 23 33 55.2379642584 -23 43 40.660470084   16.45 17 11.21   ~ 185 1
320 QSO B2335-027 Bla 23 37 57.33907021 -02 30 57.6293054   18.1 19.27 18.97   ~ 146 1
321 6C 235150+453621 Bla 23 54 21.68022501 +45 53 04.2365520   20.6 20.60 19.1   ~ 252 1
322 QSO B2353-686 Bla 23 56 00.68142337 -68 20 03.4720105   17.61 17.00 16.97   ~ 88 1
323 QSO B2355-534 BLL 23 57 53.26605016 -53 11 13.6895021   18.63 17.8 16.89   ~ 177 1
324 QSO J2358-1020 Bla 23 58 10.88239662 -10 20 08.6114174   19.16 18.91 18.00   ~ 170 1

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