The 3 columns in color are computed by VizieR, and are not part of the original data.

Note: USNO-A2.0 contains 526,280,881 sources, and is based on a re-reduction of the Precision Measuring Machine (PMM) scans from POSS-I O and E plates (>=-18°) and SRC-J and ESO-R plates (<=-20°). USNO-A2.0 was created by Dave Monet () and collaborators at Flagstaff Station, U.S. Naval Observatory.
The major difference between USNO-A2.0 and its previous version USNO-A1.0 is that A1.0 used the Guide Star Catalog as its reference frame whereas A2.0 uses the ICRF as realized by the USNO ACT catalog (Urban et al. 1997). The VizieR search engine uses an on-line compressed version (3.6Gbytes) which was generated at CDS.

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	USNO-A2.0	RAJ2000 deg	DEJ2000 deg	ACTflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	3.173	19 43 50.65272	+09 30 19.6704	0975-16201413	295.961053	+09.505464			19.0	17.5	1953.614
2	5.604	19 43 50.53344	+09 30 21.3624	0975-16201246	295.960556	+09.505934			19.1	18.1	1953.614

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.2	RA(ICRS) deg	DE(ICRS) deg	Epoch yr	Rmag mag	e_ mag	Bjmag mag	e_ mag	Class	a pix	e
1	3.634	19 43 50.63424	+09 30 20.0412	N021220244565	295.960976	+09.505567	1991.532	17.00	0.44	18.68	0.43	3	4.15	0.45
2	9.814	19 43 51.43560	+09 30 19.1124	N021220244635	295.964315	+09.505309	1991.532	17.55	0.45	19.18	0.44	3	3.43	0.36

%0a%0a%3cP%3e%0a%0a%5b%2a%2a%2a%2aClosingBrace%28s%29Inserted%2a%2a%2a%2a%5d">

">Note: The USNO-B Catalog presents positions, proper motions, magnitudes un blue, red and infrared, as well as star/galaxy estimators for 1,045,175,762 objects derived from 3,648,832,040 separate observations. The data were taken from scans of 7,435 Schmidt plates taken from various sky surveys during the last 50 years.
USNO-B1.0 catalog was created by Dave Monet and collaborators at http://www.nofs.navy.mil/data/fchpix/
Note that the star/galaxy estimators may be mixed up in dense regions.

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	USNO-B1.0	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 mas	e_DEJ2000 mas	Epoch yr	pmRA mas/yr	pmDE mas/yr	Ndet	B1mag mag	R1mag mag	B2mag mag	R2mag mag	Imag mag
1	3.114	19 43 50.67744	+09 30 19.8504	0995-0498545	295.961156	+09.505514	103	145	1967.2	12	0	3	19.46	17.20			16.73
2	6.000	19 43 50.51136	+09 30 21.6000	0995-0498542	295.960464	+09.506000	184	196	1965.9	0	0	3	19.62	17.69	18.99

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	NOMAD1	YM	RAJ2000 deg	DEJ2000 deg	r	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Bmag mag	r_	Vmag mag	r_ [****ClosingBrace(s)Inserted****]
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r_

%22>Rmag
magr_

Jmag
magHmag
magKmag
magR

1 3.11519 43 50.677344+09 30 19.850040995-0546001..295.9611556+09.5055139B 12.0 2.0 0.0 3.019.460o    17.200e         2 6.00019 43 50.511336+09 30 21.600000995-0545998..295.9604639+09.5060000B 0.0 0.0 0.0 0.018.990B    17.690e         %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20This%20version%20of%20the%20%0a%3cB%3eGSC-II%0ahas%20no%20proper%20motions,%20but%20the%20limits%20on%20brightness%20which%20existed%20on%0a%20%28F<18.5,%20B_j<19.5%29%20were%20removed.%0a%25The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%0a%25the%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	3.632	19 43 50.63448	+09 30 20.0412	N1WI044565	295.960977	+09.505567	1991.532	17.00	18.68		16.80	3	4.15	0.45
2	8.776	19 43 51.31368	+09 30 13.1868	N1WI044275	295.963807	+09.503663	1991.532	20.27	21.27			3	1.56	0.36
3	9.818	19 43 51.43584	+09 30 19.1160	N1WI044635	295.964316	+09.505310	1991.532	17.55	19.18		18.28	3	3.43	0.36

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	pmRA mas/yr	pmDE mas/yr	Jmag mag	Kmag mag	b1mag mag	b2mag mag	r1mag mag	r2mag mag	imag [****ClosingBrace(s)Inserted****]
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%27%29%22%20onMouseOut=%22laz%28%29%22>imag

%20

%22>%5cFONT SIZE=-1magNo

fl

1 2.93319 43 50.68056+09 30 19.6668295.961169+09.505463 10.6 -9.4    19.46  17.20  16.73 3 0 2 6.14719 43 50.50296+09 30 21.6864295.960429+09.506024 -4.6 -2.8    19.6218.9917.69     3 0 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 (...)	e_DEJ2000 arcsec	magBJ mag	e_ mag	magRF mag	e_ mag	magG mag	e_ mag	magGrvs mag	e_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	2.934	19 43 50.68056	+09 30 19.6672	295.961169	+09.505463	0.133	0.133	18.682	0.300	16.999	0.300	17.232	0.400	15.952	0.500	1967.2100	1967.2100	10.6	6.9	-9.4	6.9
2	6.147	19 43 50.50295	+09 30 21.6860	295.960429	+09.506024	0.133	0.133	18.990	0.400	17.690	0.400	17.929	0.400	16.895	0.500	1965.9400	1965.9400	-4.6	7.6	-2.8	7.6
3	8.775	19 43 51.31353	+09 30 13.1840	295.963806	+09.503662	0.400	0.400	21.274	0.300	20.270	0.300	20.481	0.400	19.651	0.500	1991.5300	1991.5300	0.0	0.0	0.0	0.0

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	URAT1	RAICRS deg	DEICRS deg	Epoch yr	f.mag [****ClosingBrace(s)Inserted****]
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f.mag

%20

%22>%5cFONT SIZE=-1mage_
mag

pmRA
mas/yr

pmDE
mas/yr

Jmag
mag

Hmag
mag

Kmag
mag

Bmag
mag

Vmag
mag

gmag
mag

rmag
mag

imag
mag

1 2.74119 43 50.677128+09 30 19.40181498-522190295.9611547+09.50538942013.91217.857 0.064                     2 6.69419 43 50.454197+09 30 21.73898498-522176295.9602258+09.50603862013.76318.115 0.182                     %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source	Plx mas	pmRA mas/yr	pmDE mas/yr	RADEcor	Dup	<FG> e-/s	e_ e-/s	<Gmag> mag	Var
1	2.727	19 43 50.677531502	+09 30 19.38813672	295.9611563813	0.345	+09.5053855935	0.245	4301816222649589120				0.808	0	1.0457e+03	1.8373e+00	17.976	NOT_AVAILABLE
2	6.606	19 43 50.461748101	+09 30 21.72897152	295.9602572838	0.631	+09.5060358254	0.518	4301816222663191424				0.809	0	4.3614e+02	2.0554e+00	18.926	NOT_AVAILABLE
3	8.266	19 43 51.270403731	+09 30 13.07518624	295.9636266822	1.790	+09.5036319962	1.066	4301816222649553152				0.713	0	1.2104e+02	1.5110e+00	20.317	NOT_AVAILABLE

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