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	20.797	06 07 21.55416	+00 18 12.3804	0900-02330602	091.839809	+00.303439			19.0	18.6	1955.884
2	25.427	06 07 22.37016	+00 18 10.6128	0900-02330994	091.843209	+00.302948			17.3	16.4	1955.884
3	27.518	06 07 22.69200	+00 18 08.1900	0900-02331144	091.844550	+00.302275			19.5	18.7	1955.884
4	28.270	06 07 20.84688	+00 18 20.0808	0900-02330252	091.836862	+00.305578			17.0	16.4	1955.884

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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	3.895	06 07 21.41064	+00 17 54.4524	N220000110180	091.839211	+00.298459	1990.807	17.60	0.44			3	4.62	0.59
2	25.589	06 07 22.39056	+00 18 10.5408	N220000110292	091.843294	+00.302928	1990.807	15.77	0.43	17.25	0.42	3	4.41	0.35
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>25.589&%3cFONT%20COLOR=%27#CD5B45%27>06%2007%2022.39056&%3cFONT%20COLOR=%27#CD5B45%27>%2b00%2018%2010.5408&N220000110292&091.843294&%2b00.302928&1990.807&15.77&%200.43&17.25&%200.42&3&%20%204.41&%200.35%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663c79f93254c7&-out.add=.&-source=I/271/out&GSC2.2===N220000110358' class='full'328.05006 07 20.85096+00 18 19.8684N220000110358091.836879+00.3055191990.80716.15 0.4317.18 0.420 2.87 0.01 429.76906 07 20.17176+00 18 17.8092N220000110336091.834049+00.3049471990.80717.66 0.44    3 2.72 0.14 %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	1.788	06 07 21.25872	+00 17 53.8008	0902-0075357	091.838578	+00.298278	547	251	1982.4	0	0	4	19.93		19.71	18.77	16.85
2	3.990	06 07 21.41472	+00 17 54.5316	0902-0075358	091.839228	+00.298481	280	156	1982.4	0	0	4		18.22	19.75	18.10	16.71
3	13.790	06 07 21.10416	+00 17 38.5728	0902-0075356	091.837934	+00.294048	100	76	1982.4	0	0	4		19.02	20.88	19.36	18.55
4	20.360	06 07 21.53280	+00 18 12.0132	0903-0075468	091.839720	+00.303337	113	178	1977.1	0	0	5	19.71	18.94	20.23	19.11	18.38
5	25.480	06 07 22.40880	+00 18 10.1124	0903-0075471	091.843370	+00.302809	89	155	1977.1	16	-6	5	17.46	15.63	17.20	15.79	15.11
6	26.930	06 07 22.65000	+00 18 08.0604	0903-0075474	091.844375	+00.302239	390	90	1973.6	0	0	4	20.45	18.99		18.45	17.82
7	28.015	06 07 20.83944	+00 18 19.8000	0903-0075461	091.836831	+00.305500	32	66	1977.1	0	0	5	17.12	15.74	17.08	16.16	15.57
8	29.957	06 07 20.15352	+00 18 17.8632	0903-0075454	091.833973	+00.304962	125	100	1982.4	0	0	4		18.14	19.87	17.71	17.41

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	NOMAD1	YM	RAJ2000 [****ClosingBrace(s)Inserted****]
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RAJ2000

%22>%5cFONT SIZE=-1degDEJ2000
degr

pmRA
mas/yre_
(...)pmDE
mas/yre_
(...)Bmag
magr_

Vmag
magr_

Rmag
magr_

Jmag
magHmag
magKmag
magR

1 1.78706 07 21.258672+00 17 53.800080902-0076531.M091.8385778+00.2982778B 0.0 0.0 0.0 0.019.710B    18.770B16.02115.35915.055   2 3.98806 07 21.414672+00 17 54.530160902-0076532.M091.8392278+00.2984806B 0.0 0.0 0.0 0.019.750B    18.100B16.30615.61715.262   313.79306 07 21.103992+00 17 38.569920902-0076530..091.8379333+00.2940472B 0.0 0.0 0.0 0.020.880B    19.360B         420.35606 07 21.532656+00 18 12.009960903-0076756..091.8397194+00.3033361B 0.0 0.0 0.0 0.020.230B    19.110B         525.47706 07 22.408656+00 18 10.109880903-0076759YM091.8433694+00.3028083B 16.0 3.0 -6.0 5.016.520Y16.310Y15.790B14.46113.96513.673   626.93006 07 22.650000+00 18 08.060040903-0076762..091.8443750+00.3022389B 0.0 0.0 0.0 0.020.450o    18.450B         728.01506 07 20.839344+00 18 19.800000903-0076749YM091.8368306+00.3055000B 0.0 0.0 0.0 0.016.370Y16.230Y16.160B14.93514.64414.550   829.95606 07 20.153328+00 18 17.859960903-0076741YM091.8339722+00.3049611B 0.0 0.0 0.0 0.019.870B17.970Y17.710B16.13515.35315.172   %0a%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	25.565	06 07 22.39416	+00 18 10.4544	060722.3+001810		091.843309	+00.302904	16.175	2	14.462	13.966	13.673
2	28.043	06 07 20.84808	+00 18 19.8540	060720.8+001819		091.836867	+00.305515	16.225	2	14.935	14.644	14.550

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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	3.900	06 07 21.41088	+00 17 54.4560	N7WH010180	091.839212	+00.298460	1990.807	17.60	20.03	19.48	16.51	3	4.62	0.59
2	13.695	06 07 21.12168	+00 17 38.6448	N7WH010055	091.838007	+00.294068	1990.807	18.82	20.61		18.46	3	2.40	0.21
3	20.554	06 07 21.54984	+00 18 12.1464	N7WH010293	091.839791	+00.303374	1990.807	18.88	20.05		18.77	3	2.07	0.08
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%3cEM%3e3&%3cFONT%20COLOR=%27#CD5B45%27>20.554&%3cFONT%20COLOR=%27#CD5B45%27>06%2007%2021.54984&%3cFONT%20COLOR=%27#CD5B45%27>%2b00%2018%2012.1464&N7WH010293&091.839791&%2b00.303374&1990.807&18.88&20.05&%20&18.77&3&%20%202.07&%200.08%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663c79f93254c7&-out.add=.&-source=I/305/out&GSC2.3===N7WH010033&-out.orig=o' class='full'421.09206 07 20.23848+00 17 36.8268N7WH010033091.834327+00.2935631990.80720.26      3 1.51 0.26 523.56106 07 22.40304+00 17 37.2480N7WH027385091.843346+00.2936801997.110      19.123 1.43 0.36 624.34506 07 19.73640+00 18 02.9916N7WH026240091.832235+00.3008311992.030      17.800 1.88 0.34 725.03406 07 22.71888+00 17 42.1080N7WH010081091.844662+00.2950301990.80719.8822.08    3 2.14 0.39 825.59206 07 22.39056+00 18 10.5444N7WH010292091.843294+00.3029291990.80715.7717.2516.9215.243 4.41 0.35 927.36506 07 22.15704+00 17 29.0508N7WH009964091.842321+00.2914031990.80720.11    18.993 1.72 0.45 1028.04906 07 20.85120+00 18 19.8684N7WH010358091.836880+00.3055191990.80716.1517.1816.7715.680 2.87 0.01 1129.76806 07 20.17200+00 18 17.8092N7WH010336091.834050+00.3049471990.80717.6619.7518.6617.283 2.72 0.14 %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	1.871	06 07 21.25560	+00 17 53.9268	091.838565	+00.298313	19.1	-2.3	16.021	15.056	19.93	19.71		18.77	16.85	5	0
2	4.517	06 07 21.44736	+00 17 54.7476	091.839364	+00.298541	14.0	-3.4	16.307	15.263		19.75	18.22	18.10	16.71	5	1
3	13.738	06 07 21.10752	+00 17 38.6196	091.837948	+00.294061	-0.3	-5.3				20.88	19.02	19.36	18.55	4	0
4	20.351	06 07 21.52176	+00 18 12.0456	091.839674	+00.303346	-9.4	-9.6			19.71	20.23	18.94	19.11	18.38	5	0
5	25.515	06 07 22.38816	+00 18 10.4724	091.843284	+00.302909	4.2	-0.7	14.462	13.673	17.46	17.20	15.63	15.79	15.11	6	0
6	26.579	06 07 22.61376	+00 18 08.2080	091.844224	+00.302280	-18.2	-1.1			20.45		18.99	18.45	17.82	4	0
7	28.017	06 07 20.84232	+00 18 19.8108	091.836843	+00.305503	-2.1	-5.1	14.935	14.550	17.12	17.08	15.74	16.16	15.57	6	0
8	29.949	06 07 20.16648	+00 18 17.9712	091.834027	+00.304992	2.7	-1.3	16.135	15.172		19.87	18.14	17.71	17.41	5	0

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>	\BegDIVclass='sort-down ' </A>
dec 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	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
1	25.526	06 07 22.38287	+00 18 10.5660	XPM 180-0091730	091.843262	+00.302935	9.09	3.16	8.54	3.18	15.770	17.248	16.920	15.243	14.462	0.037	13.966	0.041	13.673	0.047	685605700	17.3	16.4	600	44.008972	0	0	M
2	28.051	06 07 20.84158	+00 18 19.8430	XPM 180-0091702	091.836840	+00.305512	2.96	-1.21	2.41	-1.19	16.145	17.177	16.766	15.678	14.935	0.043	14.644	0.046	14.550	0.083	685605711	17.0	16.4	600	44.008972	0	0	M

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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	25.437	06 07 22.377888	+00 18 10.51416	452-014080	091.8432412	+00.3029206	162	16.300	0	0	3.9	3.8	14.462	13.673					0	0	0	0	0	0	0	1	0
2	27.997	06 07 20.865744	+00 18 19.85508	452-014075	091.8369406	+00.3055153	348	16.491	0	0	8.6	1.2	14.935	14.550	18.063	16.806			0	0	0	0	0	0	0	1	0

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