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	2.360	23 52 06.59088	-56 02 07.8216	0300-38122090	358.027462	-56.035506			20.4	18.3	1981.173
2	10.545	23 52 08.06616	-56 02 08.8332	0300-38122207	358.033609	-56.035787			20.7	18.2	1981.173
3	13.659	23 52 06.14016	-56 02 19.0032	0300-38122051	358.025584	-56.038612			20.3	18.3	1981.173

%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	2.958	23 52 06.49416	-56 02 07.4112	0339-0845569	358.027059	-56.035392	131	222	1986.3	-46	8	3		20.14	20.32	23.62
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%202.958&%3cFONT%20COLOR=%27#CD5B45%27>23%2052%2006.49416&%3cFONT%20COLOR=%27#CD5B45%27>-56%2002%2007.4112&0339-0845569&358.027059&-56.035392&131&222&1986.3&%20%20%20-46&%20%20%20%20%208&3&%20&20.14&20.32&23.62&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6638a246228e38&-out.add=.&-source=I/284/out&USNO-B1.0===0339-0845575&-out.orig=o' class='full'210.60923 52 08.07552-56 02 08.77200339-0845575358.033648-56.0357702032391987.2 0 04  20.4120.2221.1618.92 313.38923 52 06.14736-56 02 18.73320339-0845568358.025614-56.0385373464041983.6 0 02  20.4520.37     414.31223 52 06.06216-56 02 19.41000339-0845566358.025259-56.0387253971451986.3 -32 -363  20.2120.3523.55   %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	2.959	23 52 06.493992	-56 02 07.41012	0339-0940974	..	358.0270583	-56.0353917	B	-46.0	8.0	8.0	13.0	20.320	B			23.620	B
2	10.607	23 52 08.075328	-56 02 08.76984	0339-0940980	..	358.0336472	-56.0357694	B	0.0	0.0	0.0	0.0	20.220	B			21.160	B
3	13.387	23 52 06.147336	-56 02 18.72996	0339-0940973	..	358.0256139	-56.0385361	B	0.0	0.0	0.0	0.0	20.370	B			20.450	e
4	14.313	23 52 06.061992	-56 02 19.41000	0339-0940972	..	358.0252583	-56.0387250	B	-32.0	24.0	-36.0	9.0	20.350	B			23.550	B

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

%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>_RAJ2000

%22>%5cFONT SIZE=-1"h:m:s" _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 2.68123 52 06.52584-56 02 07.3320SAMO009634358.027191-56.0353701996.83320.4922.23    0 1.74 0.18 210.12423 52 08.02440-56 02 08.4300SAMO009632358.033435-56.0356751996.83320.2022.15    0 2.02 0.19 310.73023 52 05.87928-56 01 59.5092SAMO009641358.024497-56.0331971996.83320.44      0 2.35 0.69 414.41123 52 06.05712-56 02 19.5000SAMO009612358.025238-56.0387501996.83320.4021.37    3 1.62 0.15 520.23623 52 07.10040-56 02 26.7612SAMO009603358.029585-56.0407671996.83320.49      3 1.80 0.42 %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	2.832	23 52 06.51432	-56 02 07.5372	358.027143	-56.035427	-41.7	5.0				20.32	20.14	23.62		3	0
2	11.025	23 52 08.12376	-56 02 08.8728	358.033849	-56.035798	29.6	-6.5				20.22	20.41	21.16	18.92	4	0
3	14.403	23 52 06.07392	-56 02 19.5612	358.025308	-56.038767	-27.9	-38.9				20.35	20.21	23.55		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	[****ClosingBrace(s)Inserted****]
">

mag&%">\BegDIVclass='sort-down ' </A>dece_
magmagG
mage_
magmagGrvs
mage_
magalphaEpoch
yrdeltaEpoch
yrpmRA
mas/yre_
(...)pmDE
mas/yre_
(...) 1 2.83223 52 06.51432-56 02 07.5367358.027143-56.035427 0.133 0.13322.229 0.30020.491 0.30020.719 0.40019.405 0.5001986.39001986.3900 -41.7 15.4 5.0 15.4 210.11723 52 08.02397-56 02 08.4087358.033433-56.035669 0.400 0.40022.147 0.30020.197 0.30020.395 0.40018.956 0.5001996.83001996.8300 -0.5 20.1 8.0 20.1 311.02523 52 08.12376-56 02 08.8731358.033849-56.035798 0.115 0.11520.220 0.40021.160 0.40020.864 0.40021.515 0.5001987.24001987.2400 29.6 15.9 -6.5 15.9 414.40223 52 06.07395-56 02 19.5607358.025308-56.038767 0.133 0.13321.374 0.30020.404 0.30020.610 0.40019.805 0.5001986.39001986.3900 -27.9 15.4 -38.9 15.4 %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	2.610	23 52 06.531343	-56 02 07.21889	358.0272139	297.00	-56.0353386	580.00	46544+0009634	0	-41.6	16.5	-0.1	32.3	3	21.073	20.491	22.229
2	14.445	23 52 06.071148	-56 02 19.59610	358.0252964	346.00	-56.0387767	276.00	46544+0009612	3	-21.7	19.2	-28.0	15.4	3	21.073	20.404	21.374

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source	Plx mas	[****ClosingBrace(s)Inserted****]
">

mas&%">\BegDIVclass='sort-down ' </A>decpmRA
mas/yrpmDE
mas/yrRADEcor

Dup

<FG>
e-/se_
e-/s<Gmag>
magVar

110.41423 52 08.052592727-56 02 08.73814498358.033552469710.682-56.035760595812.6356496768055363555456      -0.9931 1.4281e+02 2.1086e+0020.138NOT_AVAILABLE 213.63523 52 06.123486621-56 02 18.90991105358.0255145276 6.526-56.038586086413.1336496767952284338176      -0.8540 8.9380e+01 2.5378e+0020.647NOT_AVAILABLE %0a%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	e_ mas	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Dup	FG e-/s	e_ e-/s	Gmag mag	e_ mag	FBP e-/s	e_ e-/s	BPmag mag	e_ mag	FRP e-/s	e_ e-/s	RPmag mag	e_ mag	BP-RP mag	RV km/s	e_ km/s	Teff K	AG mag	E(BP-RP) mag	Rad solRad	[****ClosingBrace(s)Inserted****]
solRad
">
	\BegDIVclass='sort-down '
</A>
decLum solLum
1	10.408	23 52 08.0668854454	-56 02 08.708532424	358.03354964709	0.5079	-56.03575990446	0.5907	6496768059659216256	2.8363	0.7365	-8.094	1.157	-1.750	1.363	0	1.5039e+02	8.5553e-01	20.2453	0.0062	4.7142e+01	5.8959e+00	21.1679	0.1358	2.0983e+02	6.3098e+00	18.9573	0.0326	2.2106
2	13.634	23 52 06.1244908651	-56 02 18.848454812	358.02551281736	0.9778	-56.03858530221	1.5752	6496767952284338176	0.1613	1.5192	-0.765	2.282	-3.783	3.462	0	9.1212e+01	8.4517e-01	20.7882	0.0101	6.4940e+01	6.3782e+00	20.8201	0.1066	5.5012e+01	5.2734e+00	20.4108	0.1041	0.4093

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	Source	RA_ICRS deg	DE_ICRS deg	rest pc	b_ pc	B_ pc	rlen pc	ResFlag	ModFlag
1	10.408	23 52 08.0519153026	-56 02 08.735656060	6496768059659216256	358.03354964709	-56.03575990446	385.422700045351007	275.484021346682027	633.921772097844041	546.829359545576	1	1
2	13.634	23 52 06.1230761664	-56 02 18.907087968	6496767952284338176	358.02551281736	-56.03858530221	1216.766065882530029	635.384578907347986	2213.379509137500008	546.892061359999	1	1

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