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	2.887	23 53 23.36016	+08 34 39.4500	0975-21405440	358.347334	+08.577625			19.7	17.9	1953.622

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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	2.940	23 53 23.36400	+08 34 39.4932	EO0796-0039650	358.347350	+08.577637	17.92		-1	2.95	8.2	0.24	21.65		2	4.91	3.8	3.72

%0a%0a%5b%2a%2a%2a%2aClosingBrace%28s%29Inserted%2a%2a%2a%2a%5d">">\scripttype='text/javascript' ts_init('!ext/apm.exe_2');

Note: The construction of the GSC-II is still in progress: this version has no proper motions, and the magnitude limits are 18.5 in F (red) and 19.5 in J (blue). The data are copyrighted, check the data use Policy.

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	3.025	23 53 23.36904	+08 34 40.0080	N00001013828	358.347371	+08.577780	1986.746	18.05	0.44	19.25	0.43	3	3.61	0.39
2	3.428	23 53 23.39736	+08 34 39.6912	N0000101635	358.347489	+08.577692	1991.697	18.24	0.45			3	2.80	0.27

%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	2.937	23 53 23.36352	+08 34 39.9432	0985-0639066	358.347348	+08.577762	63	144	1976.5	-8	4	5	20.36	18.02	18.71	17.89	17.48
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%202.937&%3cFONT%20COLOR=%27#CD5B45%27>23%2053%2023.36352&%3cFONT%20COLOR=%27#CD5B45%27>%2b08%2034%2039.9432&0985-0639066&358.347348&%2b08.577762&%2063&144&1976.5&%20%20%20%20-8&%20%20%20%20%204&5&20.36&18.02&18.71&17.89&17.48%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6636d90b3fbe3f&-out.add=.&-source=I/284/out&USNO-B1.0===0985-0639067&-out.orig=o' class='full'2 4.11823 53 23.43216+08 34 40.87200985-0639067358.347634+08.5780202025341974.6 0 0220.51      17.73 %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	2.934	23 53 23.363328	+08 34 39.93996	0985-0691619	YM	358.3473472	+08.5777611	B	-8.0	2.0	4.0	4.0	18.710	B	17.970	Y	17.890	B	16.573	15.853	15.148
2	4.115	23 53 23.431992	+08 34 40.86984	0985-0691620	..	358.3476333	+08.5780194	B	0.0	0.0	0.0	0.0	20.510	o

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	[****ClosingBrace(s)Inserted****]
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yr&%">\BegDIVclass='sort-down ' </A>decFmag
magjmag
mag

Vmag
magNmag
magClass

a
pixe

1 3.43223 53 23.39760+08 34 39.6948N00H000635358.347490+08.5776931991.69718.2419.8518.7917.523 2.80 0.27 %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	3.190	23 53 23.38128	+08 34 39.7416	358.347422	+08.577706	-4.6	-2.2	16.573	15.149	20.36	18.71	18.02	17.89	17.48	6	0
2	3.383	23 53 23.39376	+08 34 39.9288	358.347474	+08.577758	-16.6	-33.3	16.573	15.149	20.51				17.73	3	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 mas/yr	pmRAx mas/yr	pmDEx mas/yr	Fmag mag	Bjmag mag	Vmag mag	[****ClosingBrace(s)Inserted****]
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mag&%">\BegDIVclass='sort-down ' </A>decNmag
magJmag
mage_
magHmag
mage_
magKmag
mage_
mag2Mkey

Bmag
magRmag
magFld

dT
yrfg

fs

M

1 3.24323 53 23.38486+08 34 39.7415XPM 197-0925232358.347437+08.577706 1.87 -0.88 1.79 -0.5818.23719.85118.78617.51816.573 0.15615.854 0.16915.149 0.152121056573619.717.9 58447.14105600M %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	3.223	23 53 23.38331	+08 34 39.8196	358.347430	+08.577728	0.014	0.027	18.710	0.400	17.890	0.400	18.308	0.083	16.978	0.112	2005.7300	2005.7300	-4.6	4.2	-2.2	4.2
2	3.383	23 53 23.39373	+08 34 39.9291	358.347474	+08.577758	0.098	0.098	19.851	0.300	18.237	0.300	18.475	0.400	17.237	0.500	1991.3200	1991.3200	-16.6	5.5	-33.3	5.5

%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 [****ClosingBrace(s)Inserted****]
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pmRA

%20

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

Jmag
mag

Hmag
mag

Kmag
mag

Bmag
mag

Vmag
mag

gmag
mag

rmag
mag

imag
mag

1 3.20323 53 23.385791+08 34 39.74896493-610224358.3474250+08.57772332012.79218.074 0.034 -4.4 4.316.57315.85415.149           %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	3.312	23 53 23.387547	+08 34 40.12905	358.3474481	116.00	+08.5778136	152.00	49169+0000635	4	-2.2	5.7	9.3	7.5	7	42.131	18.237	19.851	17.518	18.786	16.573	15.854	15.149

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