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	4.659	19 56 51.17472	+61 39 29.2500	1500-07124135	299.213228	+61.658125			15.2	14.0	1952.615
2	7.418	19 56 52.02552	+61 39 38.2428	1500-07124252	299.216773	+61.660623			16.3	15.1	1952.615

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cB%3e%3cFONT%20COLOR=%27#CD5B45%27>%20The%20current%20version%20includes%20only%20the%20North%20%28POSS-I%20plates%29%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	APM-ID	RAJ2000 deg	DEJ2000 deg	rmag mag	l_	rClass	rStel	rDiam arcsec	rEll	bmag mag	l_	bClass	bStel	bDiam arcsec	b-r mag	Mflag [****ClosingBrace(s)Inserted****]
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Mflag

%22> 1 2.80319 56 51.56400+61 39 33.2928EO0545-0136767299.214850+61.65924811.96   2 10.79 28.4 0.6412.75   2 16.71 28.6 0.79* %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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	5.397	19 56 51.12384	+61 39 28.5264	N011110316634	299.213016	+61.657924	1991.669	13.95	0.33	15.32	0.32	0	4.42	0.10
2	7.494	19 56 52.04424	+61 39 38.1852	N011110316635	299.216851	+61.660607	1991.669	14.02	0.33	15.48	0.32	3	8.34	0.59

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eUSNO-B%20Catalog%20presents%20positions,%20proper%20motions,%20%0amagnitudes%20un%20blue,%20red%20and%20infrared,%20as%20well%20as%20star/galaxy%20estimators%0afor%201,045,175,762%20objects%20derived%20from%203,648,832,040%20separate%20observations.%0aThe%20data%20were%20taken%20from%20scans%20of%207,435%20Schmidt%20plates%0ataken%20from%20various%20sky%20surveys%20during%20the%20last%2050%20years.%3cBR%3e%0aUSNO-B1.0%20catalog%20was%20created%20by%20Dave%20Monet%20and%20collaborators%0aat%20http://www.nofs.navy.mil/data/fchpix/%20%3cBR%3e%0a%3cB%3e%3cFONT%20COLOR=%27#EE0000%27>%20Note%20that%20the%20star/galaxy%20estimators%20may%20be%20mixed%20up%0a%20in%20dense%20regions.%0a%3cP%3e%0a

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	4.702	19 56 51.15288	+61 39 29.2104	1516-0266971	299.213137	+61.658114	48	102	1975.7	0	0	5	15.67	13.82	15.30	14.01	14.32
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%204.702&%3cFONT%20COLOR=%27#CD5B45%27>19%2056%2051.15288&%3cFONT%20COLOR=%27#CD5B45%27>%2b61%2039%2029.2104&1516-0266971&299.213137&%2b61.658114&%2048&102&1975.7&%20%20%20%20%200&%20%20%20%20%200&5&15.67&13.82&15.30&14.01&14.32%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66382f00222c89&-out.add=.&-source=I/284/out&USNO-B1.0===1516-0266975&-out.orig=o' class='full'2 7.44819 56 52.02144+61 39 38.33281516-0266975299.216756+61.660648 76 861975.9 0 0516.6314.6615.4713.9414.83 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20Naval%20Observatory%20Merged%20Astrometric%20Dataset%20%28NOMAD%29%20contains%0aastrometric%20and%20photometric%20data%20for%20over%201%20billion%20stars%20derived%20from%0athe%20Hipparcos%20%28I/239%29,%20Tycho-2%20%28I/259%29,%20UCAC2%20%28I/289%29,%20and%20USNO-B1.0%0a%28I/284%29%20catalogs%20for%20astrometry%20and%20optical%20photometry,%20supplemented%0aby%202MASS%20%28II/246%29%20near-infrared%20photometry.%3cBR%3e%0a%3cFONT%20SIZE=%27-1%27%3eAn%20efficient%20remote%20query%20program%20%3cB%3efindnomad1%20is%0aavailable%20in%20the%20cdsclient%20%0apackage,%20for%20Unix/Linux%20platforms%0a%3cP%3e%0a

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_	Rmag mag	r_	Jmag mag	Hmag mag	Kmag mag	R
1	4.702	19 56 51.152664	+61 39 29.21004	1516-0273884	YM	299.2131361	+61.6581139	B	0.0	0.0	0.0	0.0	15.210	Y	14.400	Y	14.010	B	13.327	12.955	12.858
2	7.446	19 56 52.021344	+61 39 38.32992	1516-0273888	YM	299.2167556	+61.6606472	B	0.0	0.0	0.0	0.0	17.110	Y	15.930	Y	13.940	B	14.592	13.842	13.537

%0a%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	[****ClosingBrace(s)Inserted****]
">

deg&%">\BegDIVclass='sort-down ' </A>decEpoch
yrFmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 5.39319 56 51.12408+61 39 28.5300N11V016634299.213017+61.6579251991.66913.9515.3214.6113.600 4.42 0.10 2 7.49819 56 52.04448+61 39 38.1888N11V016635299.216852+61.6606081991.66914.0215.4815.6813.673 8.34 0.59 %0a%0a

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 mag	No	fl
1	5.347	19 56 51.13056	+61 39 28.5732	299.213044	+61.657937	-5.4	-11.2	13.328	12.859	15.67	15.30	13.82	14.01	14.32	6	0
2	7.456	19 56 52.03488	+61 39 38.2140	299.216812	+61.660615	3.2	3.8	14.593	13.537	16.63	15.47	14.66	13.94	14.83	6	0
3	7.853	19 56 51.93672	+61 39 39.6216	299.216403	+61.661006	-89.5	-49.9				15.51	18.75	14.53	17.03	4	0

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx mas/yr	pmDEx mas/yr	[****ClosingBrace(s)Inserted****]
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mas/yr&%">\BegDIVclass='sort-down ' </A>decFmag
magBjmag
mag

Vmag
mag

Nmag
mag

Jmag
mag

e_
mag

Hmag
mag

e_
mag

Kmag
mag

e_
mag

2Mkey

Bmag
mag

Rmag
mag

Fld

dT
yr

fg

fs

M

1 5.43419 56 51.12888+61 39 28.4867XPM 303-0408300299.213037+61.657913 -4.63 -14.29 -4.31 -13.9113.94615.32214.60713.60113.328 0.02112.956 0.02612.859 0.030 70082776315.214.0 10646.80553100M 2 7.49619 56 52.03995+61 39 38.2319XPM 303-0408304299.216833+61.660620 4.43 1.67 4.75 2.0514.02415.47715.67613.67014.593 0.04913.842 0.06513.537 0.057 70082775716.315.1 10646.80553100M %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%0a%25%25%25%20Introduction%20to%20UCAC4%20VizieR%20page%0a%3cEM%3e%25Note:%20%0a%20%20see%20the%20UCAC4%20document,%20and%20the%0a%20%20the%20fix%20for%20high%20proper%20motion%20stars.%0a%20%20The%20UCAC%20home%20page%20is%20available%20at%0a%20%20http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/ucac.%0a%20%20%3cBR%3ePlease%20%3cB%3eacknowledge%20the%20usage%0a%20%20of%20the%20UCAC4%0a%0a%25%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	UCAC4	RAJ2000 deg	DEJ2000 deg	ePos mas	f.mag mag	of	db	pmRA mas/yr	pmDE mas/yr	Jmag mag	Kmag mag	Bmag mag	Vmag mag	rmag mag	imag mag	H	A	b	h	Z	B	L	N	S
1	5.463	19 56 51.140616	+61 39 28.45224	759-054105	299.2130859	+61.6579034	139	14.572	0	0	-11.0	-7.8	13.328	12.859	15.667	14.741	14.450	14.183	0	0	0	0	1	0	0	1	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 [****ClosingBrace(s)Inserted****]
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e_RAJ2000

%20

%22>%5cFONT SIZE=-1(...)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 5.46419 56 51.14061+61 39 28.4519299.213086+61.657903 0.030 0.13415.322 0.30013.946 0.30014.845 0.08013.921 0.1101983.89001983.8900 -11.0 4.9 -7.8 12.2 2 7.38419 56 52.02478+61 39 38.1916299.216770+61.660609 0.092 0.09315.477 0.30014.024 0.30016.030 0.08014.797 0.1102006.39002006.3900 3.2 3.9 3.8 3.9 3 7.85419 56 51.93672+61 39 39.6219299.216403+61.661006 0.133 0.11515.510 0.40014.530 0.40014.738 0.40013.925 0.5001980.03001980.0300 -89.5 7.3 -49.9 6.8 %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"	URAT1	RAICRS deg	DEICRS deg	Epoch yr	f.mag mag	e_ mag	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	Bmag mag	Vmag mag	gmag mag	rmag mag	imag mag
1	5.487	19 56 51.127577	+61 39 28.48442	759-248702	299.2129807	+61.6579003	2013.572	14.374	0.010	-6.4	-3.2	13.328	12.956	12.859	15.667	14.753	15.130	14.454	14.193
2	7.437	19 56 52.038190	+61 39 38.22332	759-248704	299.2167968	+61.6606161	2013.410	16.071	0.015	-3.7	-0.4	14.593	13.842	13.537

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