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	1.699	16 38 16.97808	+33 55 28.1028	1200-07962857	249.570742	+33.924473			18.9	18.5	1954.485

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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
1	1.887	16 38 16.95816	+33 55 28.2900	EO1093-0222028	249.570659	+33.924525	19.00		-1	1.96	5.4	0.11	20.95		1	4.89	6.2	1.96
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%201.887&%3cFONT%20COLOR=%27#CD5B45%27>16%2038%2016.95816&%3cFONT%20COLOR=%27#CD5B45%27>%2b33%2055%2028.2900&EO1093-0222028&249.570659&%2b33.924525&19.00&%20&-1&%20%20%201.96&%20%20%205.4&%200.11&20.95&%20&%201&%20%20%204.89&%20%20%206.2&%20%201.96&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6643484e29b208&-out.add=.&-source=I/267/out&APM-ID===EO1069-0236910&-out.orig=o' class='full'2 2.38416 38 17.00400+33 55 28.7508EO1069-0236910249.570850+33.92465319.16   1 4.97 7.0 0.4322.05L 0     2.89* %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	1.754	16 38 16.99752	+33 55 28.1244	N13221334165	249.570823	+33.924479	1993.322	18.43	0.44			3	4.56	0.47

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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	0.416	16 38 16.93536	+33 55 26.3712	1239-0250953	249.570564	+33.923992	586	543	1966.7	-10	-50	3	19.33	19.20			18.64
2	2.054	16 38 16.98408	+33 55 28.4520	1239-0250954	249.570767	+33.924570	208	79	1976.5	-2	16	5	20.47	18.59	19.72	18.73	18.26
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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_	Rmag mag	r_	Jmag mag	Hmag mag	Kmag mag	R
1	0.416	16 38 16.935336	+33 55 26.37012	1239-0255134	..	249.5705639	+33.9239917	B	-10.0	15.0	-50.0	14.0	19.330	o			19.200	e
2	2.051	16 38 16.984008	+33 55 28.44984	1239-0255135	..	249.5707667	+33.9245694	B	-2.0	7.0	16.0	2.0	19.720	B			18.730	B
3	3.443	16 38 16.854672	+33 55 23.27016	1239-0255133	..	249.5702278	+33.9231306	B	0.0	0.0	0.0	0.0	21.250	B			19.600	B

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3 [****ClosingBrace(s)Inserted****]
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GSC2.3

%22>RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 1.75816 38 16.99776+33 55 28.1280N61R004165249.570824+33.9244801993.32218.4319.8619.3918.323 4.56 0.47 %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	0.490	16 38 16.93560	+33 55 26.1408	249.570565	+33.923928	-9.4	-54.6			19.33		19.20		18.64	3	0
2	1.855	16 38 16.97400	+33 55 28.2612	249.570725	+33.924517	-7.0	15.0			20.47	19.72	18.59	18.73	18.26	5	0

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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 [****ClosingBrace(s)Inserted****]
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magG

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1 0.49016 38 16.93560+33 55 26.1413249.570565+33.923928 0.133 0.13319.330 0.40019.200 0.40019.222 0.40019.039 0.5001966.72001966.7200 -9.4 7.6 -54.6 7.6 2 1.56916 38 16.98812+33 55 27.9575249.570784+33.924433 0.036 0.03219.860 0.30018.428 0.30018.945 0.08417.868 0.1132003.17002003.1700 -7.0 5.7 15.0 5.7 %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"	RAICRS deg	e_ mas	DEICRS deg	e_ mas	ID	Type	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Nobs	Dt yr	Rmag mag	Bmag mag	Nmag mag	Vmag mag	Jmag mag	Hmag mag	Kmag mag
1	1.797	16 38 17.000399	+33 55 28.16005	249.5708350	69.00	+33.9244889	108.00	56991+0004165	4	7.0	2.4	-0.6	3.8	11	43.011	18.428	19.860	18.323	19.387

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	Gmag [****ClosingBrace(s)Inserted****]
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Gmag

%20

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PA
pix

1 1.52416 38 17.0839640611+33 55 25.896515809N61R087034249.57118318359+33.92386014328 11322133870342006.0004                                                22.13421.949       2 1.54916 38 16.9790842403+33 55 28.071763695N61R004165249.57077898000+33.92442751000 1132213341652012.1483  20.76400019.86090018.428300  18.324000      21.17120.64920.36219.91319.61119.2613          15.73515.69112.133 9.154     4.565 0.466110.7 3 2.36516 38 17.0136816000+33 55 28.704900000N61R072814249.57089034000+33.92464025000 11322133728142013.9873                    20.904  19.57620.22119.5753                             4 3.11716 38 17.0883080712+33 55 23.669592392N61R034617249.57120128363+33.92324155344 11322133346172003.1793                  24.15324.63023.69522.18922.020                               5 5.53616 38 16.8223944000+33 55 21.179208000N61R048819249.57009331000+33.92254978000 11322133488192011.3203                  24.11822.48521.97121.71321.806                               %0a%0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20SDSS%20is%20also%20available%20from%20http://www.sdss.org/%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	mode	cl	SDSS	m_	zsp	umag mag	e_ mag	gmag mag	e_ mag	rmag mag	e_ mag	imag mag	e_ mag	zmag mag	e_ mag	RA_ICRS deg	DE_ICRS deg	ObsDate yr	Q
1	1.611	16 38 16.98696	+33 55 27.9861	1	3	J163816.98+335528.0			21.161	0.182	19.782	0.020	19.056	0.016	18.631	0.017	18.408	0.056	249.570779	+33.924445	2003.1799	3
2	3.319	16 38 17.10360	+33 55 23.5452	1	6	J163817.10+335523.5			25.346	0.688	24.523	0.426	23.373	0.306	22.132	0.159	22.168	0.538	249.571265	+33.923207	2003.1799	3
3	4.908	16 38 16.82760	+33 55 21.8244	1	3	J163816.82+335521.8			23.638	0.771	22.203	0.098	21.478	0.083	21.504	0.129	21.518	0.494	249.570115	+33.922729	2003.1799	3

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