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	5.355	10 24 43.91136	-00 52 47.5104	0825-07191003	156.182964	-00.879864			17.4	17.8	1952.081

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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	2.534	10 24 44.36208	-00 52 43.6404	0891-0197385	156.184842	-00.878789	999	586	1967.1	360	92	3	16.25	10.91	19.96
2	3.153	10 24 44.07216	-00 52 46.8624	0891-0197384	156.183634	-00.879684	209	299	1972.5	0	0	2		19.11			18.03
3	5.399	10 24 43.88472	-00 52 46.9632	0891-0197383	156.182853	-00.879712	451	881	1967.1	0	0	3	18.06	17.57	17.76
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%3cEM%3e3&%3cFONT%20COLOR=%27#CD5B45%27>%205.399&%3cFONT%20COLOR=%27#CD5B45%27>10%2024%2043.88472&%3cFONT%20COLOR=%27#CD5B45%27>-00%2052%2046.9632&0891-0197383&156.182853&-00.879712&451&881&1967.1&%20%20%20%20%200&%20%20%20%20%200&3&18.06&17.57&17.76&%20&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663fb9711787e7&-out.add=.&-source=I/284/out&USNO-B1.0===0891-0197382&-out.orig=o' class='full'4 6.57610 24 43.79136-00 52 46.74000891-0197382156.182464-00.8796505266421973.1 -40 10418.8017.7416.6016.09   5 7.46710 24 43.72272-00 52 46.48080891-0197381156.182178-00.8795782144651971.6 0 02  17.73  16.62   %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	2.533	10 24 44.362008	-00 52 43.64004	0891-0201924	..	156.1848417	-00.8787889	B	360.0	52.0	92.0	14.0	19.960	B			10.910	e
2	3.152	10 24 44.071992	-00 52 46.85988	0891-0201923	..	156.1836333	-00.8796833	B	0.0	0.0	0.0	0.0					19.110	e
3	5.398	10 24 43.884672	-00 52 46.95996	0891-0201922	..	156.1828528	-00.8797111	B	0.0	0.0	0.0	0.0	17.760	B			17.570	e
4	6.576	10 24 43.791336	-00 52 46.74000	0891-0201921	..	156.1824639	-00.8796500	B	-40.0	15.0	10.0	18.0	16.600	B			16.090	B
5	7.467	10 24 43.722672	-00 52 46.48008	0891-0201920	..	156.1821778	-00.8795778	B	0.0	0.0	0.0	0.0					16.620	B

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

%22>%5cFONT SIZE=-1arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"RAJ2000
degDEJ2000
degpmRA
mas/yrpmDE
mas/yrJmag
magKmag
magb1mag
magb2mag
magr1mag
magr2mag
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magNo

fl

1 2.41910 24 44.35464-00 52 43.6692156.184811-00.878797 367.5 77.8    16.2519.9610.91     3 1 2 3.30810 24 44.06184-00 52 46.9380156.183591-00.879705 -3.2 -17.2        19.11  18.03 2 0 3 5.28410 24 43.87584-00 52 46.4268156.182816-00.879563 -1.2 -5.5    18.0617.7617.57     3 0 4 6.84810 24 43.76592-00 52 46.4808156.182358-00.879578 -51.8 3.9    18.8016.6017.7416.09   4 0 5 7.85110 24 43.69848-00 52 46.6068156.182077-00.879613 -11.8 -21.8        17.7316.62   2 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	e_ mag	magG mag	e_ mag	magGrvs mag	e_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	6.848	10 24 43.76593	-00 52 46.4812	156.182358	-00.879578	0.115	0.115	16.600	0.400	16.090	0.400	16.210	0.400	15.739	0.500	1973.1500	1973.1500	-51.8	5.4	3.9	5.4

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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 mag	[****ClosingBrace(s)Inserted****]
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mag&%">\BegDIVclass='sort-down ' </A>decOMag
magBjmag
magFpgmag
magEpgmag
magNpgmag
magUmag
magBmag
magVmag
magumag
maggmag
magrmag
magimag
magzmag
magymag
magJmag
magHmag
magKsmag
magZmag
magYmag
magW1mag
magW2mag
magW3mag
magW4mag
magFUVmag
magNUVmag
maga
pixe
pixPA
pix 1 3.59610 24 43.9910013628-00 52 46.121038868S51F015210156.18329583901-00.87947806635 21212003152101999.2203                  22.51421.91322.63922.83022.827                               2 5.34210 24 44.2454917897-00 52 49.658630272S51F015214156.18435621579-00.88046073063 21212003152141999.2203                  22.19622.46522.16721.61721.970                               3 7.72310 24 44.6300403609-00 52 48.610670878S51F015213156.18595850150-00.88016963080 21212003152131999.2203                  24.89722.97922.99022.80722.612                               %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	3.413	10 24 43.99968	-00 52 45.9768	1	3	J102444.00-005245.9			21.985	0.160	22.635	0.153	24.159	0.608	22.526	0.265	22.097	0.514	156.183332	-00.879438	1999.2204	3
2	4.861	10 24 44.22288	-00 52 49.2096	1	3	J102444.22-005249.2			21.572	0.182	21.587	0.100	21.140	0.090	20.710	0.103	20.099	0.195	156.184262	-00.880336	1999.2204	3

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ULAS	m	RAJ2000 deg	DEJ2000 [****ClosingBrace(s)Inserted****]
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%7b%3cB%3eULAS%7d%20JHHMMSS.ss%2bDMMSS.s%7d,%20see%20http://cds.u-strasbg.fr/cgi-bin/Dic%3fULAS%29%7d%27%29%22%20onMouseOut=%22laz%28%29%22>DEJ2000

%20

%22>%5cFONT SIZE=-1degYmag
mag

e_
mag

Jmag1
mag

e_
mag

Jmag2
mag

e_
mag

Hmag
mag

e_
mag

Kmag
mag

e_
mag

Epoch
yr

pmRA
mas/yr

pmDE
mas/yr

cl

1 2.35910 24 44.06473-00 52 45.5628J102444.06-005245.51156.183603-00.87932320.566 0.243                2008.1915    -2 %0a%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"	SrcID	RAJ2000 deg	DEJ2000 deg	Name	PriOrSec	Y-Jpnt mag	J-Hpnt mag	H-Kspnt mag	J-Kspnt mag	Y-Jext mag	J-Hext mag	H-Ksext mag	J-Ksext mag	Mclass	AY mag	AJ mag	AH mag	AKs mag	Ypmag mag	Yap3 mag	Yapc3	Yavgap3	Yperrbits	Jpmag mag	Jap3 mag	Japc3 mag	Javgap3	Jperrbits	Hpmag mag	Hap3 mag	Hapc3 mag	Havgap3 [****ClosingBrace(s)Inserted****]
Havgap3 ">
	Hperrbits	Kspmag mag	Ksap3 mag	Ksapc3 mag	Ksavgap3	Ksperrbits
1	2.664	10 24 44.16925	-00 52 46.9843	473735718596	156.184039	-00.879718	VHS J102444.16-005246.9	0									1	0.0805	0.0571	0.0364	0.0239	18.8052	20.0723	20.5979	51.922	8388736					0					0					0
2	2.950	10 24 44.01058	-00 52 45.1522	473735748064	156.183377	-00.879209	VHS J102444.01-005245.1	0									1	0.0805	0.0570	0.0364	0.0238					0	18.5135	19.4591	19.9599	51.567	8388736					0					0
3	5.580	10 24 44.57006	-00 52 44.9425	473063375602	156.185709	-00.879151	VHS J102444.57-005244.9	0									-1	0.0805	0.0571	0.0364	0.0239	21.0387	21.1038	21.6637	102.231	0					0					0					0
4	8.202	10 24 43.65877	-00 52 45.5267	473063410670	156.181912	-00.879313	VHS J102443.65-005245.5	0									1	0.0804	0.0570	0.0364	0.0238					0					0					0	16.8961	17.9072	18.2571	101.158	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"	SMSS	RAICRS deg	DEICRS deg	ObjectId	e_RAICRS mas	e_DEICRS mas	EpMean d	flags	ClassStar	RadrPetro pix	uPSF mag	uPetro mag	vPSF mag	vPetro mag	gPSF mag	gPetro mag	rPSF mag	rPetro mag	iPSF mag	iPetro mag	zPSF mag	zPetro mag
1	0.461	10 24 44.17728	-00 52 44.6702	102444.18-005244.5	156.184072	-00.879075	1116697158	164	120	58220.4899	3	0.501	8.08			19.1295	19.6654	18.5759	18.2910
2	9.085	10 24 44.74463	-00 52 48.3386	102444.74-005248.3	156.186436	-00.880094	2152039869	36	36	58135.6972	1024	0.928		14.6557	16.5943

%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.sdss3.org/dr9/%3cP%3e%0a