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	19.238	20 42 40.52736	+04 47 29.3604	0900-18925624	310.668864	+04.791489			18.2	16.9	1951.604
2	19.679	20 42 40.56408	+04 47 27.2004	0900-18925632	310.669017	+04.790889			16.9	16.7	1951.604
3	22.136	20 42 42.58872	+04 47 54.6000	0900-18926388	310.677453	+04.798500			17.8	17.4	1951.604
4	26.283	20 42 41.65272	+04 47 10.4424	0900-18926027	310.673553	+04.786234			18.2	16.7	1951.604

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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	19.134	20 42 40.51776	+04 47 30.0084	N02100105554	310.668824	+04.791669	1991.699	18.30	0.43	19.31	0.42	3	2.02	0.18
2	20.343	20 42 40.56648	+04 47 25.8360	N02100105553	310.669027	+04.790510	1991.699	17.18	0.43	18.20	0.42	3	2.51	0.13
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>20.343&%3cFONT%20COLOR=%27#CD5B45%27>20%2042%2040.56648&%3cFONT%20COLOR=%27#CD5B45%27>%2b04%2047%2025.8360&N02100105553&310.669027&%2b04.790510&1991.699&17.18&%200.43&18.20&%200.42&3&%20%202.51&%200.13%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663ea5b03e65c6&-out.add=.&-source=I/271/out&GSC2.2===N02100105687' class='full'321.98420 42 42.62784+04 47 53.9664N02100105687310.677616+04.7983241991.69917.66 0.4318.45 0.420 2.18 0.05 426.58120 42 41.69400+04 47 10.1292N02100105425310.673725+04.7861471991.69917.04 0.4318.54 0.420 2.58 0.13 %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	19.581	20 42 40.52616	+04 47 28.5432	0947-0541448	310.668859	+04.791262	139	242	1976.2	0	0	5	18.93	17.33	18.47	17.30	16.84
2	20.015	20 42 40.55208	+04 47 26.8332	0947-0541449	310.668967	+04.790787	109	149	1976.2	0	0	5	17.52	16.92	18.11	16.64	16.01
3	21.908	20 42 42.61152	+04 47 54.0600	0947-0541467	310.677548	+04.798350	106	111	1976.6	0	0	5	18.42	17.78	19.21	17.88	17.52
4	26.549	20 42 41.69280	+04 47 10.1616	0947-0541458	310.673720	+04.786156	149	46	1976.2	16	2	5	18.82	17.02	19.24	17.10	16.34

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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_ (...)	[****ClosingBrace(s)Inserted****]
">

%28...%29&%">\BegDIVclass='sort-down ' </A>decBmag
magr_

Vmag
magr_

Rmag
magr_

Jmag
magHmag
magKmag
magR

119.58420 42 40.525992+04 47 28.539960947-0596655..310.6688583+04.7912611B 0.0 0.0 0.0 0.018.470B    17.300B         220.01820 42 40.552008+04 47 26.829960947-0596656YM310.6689667+04.7907861B 0.0 0.0 0.0 0.017.550Y17.110Y16.640B16.33815.65315.250   321.90620 42 42.611328+04 47 54.060000947-0596674YM310.6775472+04.7983500B 0.0 0.0 0.0 0.018.350Y    17.880B16.40816.22115.923   426.55020 42 41.692656+04 47 10.160160947-0596665YM310.6737194+04.7861556B 16.0 4.0 2.0 1.017.940Y16.990Y17.100B15.45515.06714.897   %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-30/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC14	f_	RAICRS deg	DEICRS deg	r'mag mag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	20.444	20 42 40.57008	+04 47 25.5660	204240.5+044725		310.669042	+04.790435	17.283	1
2	26.818	20 42 41.69784	+04 47 09.8916	204241.6+044709		310.673741	+04.786081	16.930	2	15.456	15.068

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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	19.133	20 42 40.51776	+04 47 30.0120	N1S4005554	310.668824	+04.791670	1991.699	18.30	19.31			3	2.02	0.18
2	20.338	20 42 40.56672	+04 47 25.8396	N1S4005553	310.669028	+04.790511	1991.699	17.18	18.20	17.00	16.26	3	2.51	0.13
3	21.989	20 42 42.62808	+04 47 53.9700	N1S4005687	310.677617	+04.798325	1991.699	17.66	18.45	17.93	17.35	0	2.18	0.05
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%3cEM%3e3&%3cFONT%20COLOR=%27#CD5B45%27>21.989&%3cFONT%20COLOR=%27#CD5B45%27>20%2042%2042.62808&%3cFONT%20COLOR=%27#CD5B45%27>%2b04%2047%2053.9700&N1S4005687&310.677617&%2b04.798325&1991.699&17.66&18.45&17.93&17.35&0&%20%202.18&%200.05%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663ea5b03e65c6&-out.add=.&-source=I/305/out&GSC2.3===N1S4005425&-out.orig=o' class='full'426.57720 42 41.69400+04 47 10.1328N1S4005425310.673725+04.7861481991.69917.0418.5417.7116.510 2.58 0.13 %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	19.569	20 42 40.53528	+04 47 28.2804	310.668897	+04.791189	9.1	-17.0			18.93	18.47	17.33	17.30	16.84	5	0
2	19.866	20 42 40.56744	+04 47 26.7324	310.669031	+04.790759	8.5	-7.9	16.338	15.251	17.52	18.11	16.92	16.64	16.01	6	0
3	21.931	20 42 42.62544	+04 47 53.9268	310.677606	+04.798313	9.0	-7.2	16.409	15.923	18.42	19.21	17.78	17.88	17.52	6	0
4	26.692	20 42 41.69904	+04 47 10.0176	310.673746	+04.786116	19.6	-3.8	15.456	14.897	18.82	19.24	17.02	17.10	16.34	6	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 [****ClosingBrace(s)Inserted****]
">

pmDEp

%20

%22>%5cFONT SIZE=-1mas/yrpmRAx
mas/yr

pmDEx
mas/yr

Fmag
mag

Bjmag
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

120.36620 42 40.57486+04 47 25.5985XPM 189-0825195310.669062+04.790444 -0.13 -23.47 -0.35 -23.5417.18418.20316.99616.26216.338 0.11615.654 0.14015.251 0.149 99369168016.916.7 57648.87065900M 222.13520 42 42.63983+04 47 54.0170XPM 189-0825222310.677666+04.798338 12.58 -2.29 12.36 -2.3617.65818.45017.92917.34816.409 0.12116.221 0.25315.923 0.267 99369166517.817.4 57648.87065900M 326.68420 42 41.70095+04 47 10.0249XPM 189-0825209310.673754+04.786118 11.56 0.96 11.34 0.9017.03618.53717.70516.51015.456 0.05815.068 0.08214.897 0.115 99369169018.216.7 57648.87065900M %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	19.264	20 42 40.51060	+04 47 29.9230	310.668794	+04.791645	0.005	0.004	19.305	0.300	18.296	0.300	18.404	0.081	17.537	0.111	2005.7300	2005.7300	0.0	0.0	0.0	0.0
2	19.569	20 42 40.53526	+04 47 28.2802	310.668897	+04.791189	0.103	0.103	18.470	0.400	17.300	0.400	17.529	0.400	16.584	0.500	1976.2200	1976.2200	9.1	5.1	-17.0	5.1
3	20.401	20 42 40.56564	+04 47 25.7482	310.669024	+04.790486	0.003	0.002	18.203	0.300	17.184	0.300	17.331	0.080	16.471	0.110	2005.7300	2005.7300	8.5	4.1	-7.9	5.1
4	21.901	20 42 42.62844	+04 47 53.8535	310.677619	+04.798293	0.003	0.003	18.450	0.300	17.658	0.300	17.666	0.080	16.960	0.110	2005.7300	2005.7300	9.0	4.7	-7.2	4.7
5	26.314	20 42 42.13783	+04 47 11.1579	310.675574	+04.786433	0.027	0.029	23.016	0.231	21.363	0.205	20.885	0.146	19.407	0.165	2005.7300	2005.7300	0.0	0.0	0.0
6	26.662	20 42 41.69615	+04 47 10.0477	310.673734	+04.786124	0.002	0.002	18.537	0.300	17.036	0.300	17.092	0.080	15.899	0.110	2005.7300	2005.7300	19.6	3.8	-3.8	3.8
7	28.198	20 42 42.93571	+04 47 15.1868	310.678899	+04.787552	0.044	0.038	23.919	0.299	21.910	0.210	20.814	0.239	19.005	0.251	2005.7300	2005.7300	0.0	0.0	0.0

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Full	_r [****ClosingBrace(s)Inserted****]
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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_r

%20

%22>%5cFONT SIZE=-1arcsec _RAJ2000
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_DEJ2000
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CMC15

RA_ICRS
deg

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deg

r'mag
mag

pflag

Nt

Jmag
mag

Hmag
mag

Ksmag
mag

120.44920 42 40.56982+04 47 25.5624204240.5+044725310.669041+04.79043417.283   116.338     226.81820 42 41.69786+04 47 09.8914204241.6+044709310.673741+04.78608116.930   215.45615.068   %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	20.488	20 42 40.573024	+04 47 25.56709	474-503504	310.6690211	+04.7904444	2013.063	17.367	0.145	-9.1	2.5	16.338	15.654	15.251
2	21.851	20 42 42.638327	+04 47 54.00814	474-503518	310.6776422	+04.7982558	2013.057	17.641	0.050	-4.8	-22.0	16.409	16.221	15.923
3	26.735	20 42 41.699000	+04 47 10.00706	474-503507	310.6737758	+04.7861036	2013.106	16.881	0.054	8.2	-2.6	15.456	15.068	14.897	18.735	17.740

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