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	0.693	14 14 39.65088	+23 10 39.3204	1125-06916394	213.665212	+23.177589			16.0	16.0	1950.216

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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	0.924	14 14 39.59616	+23 10 39.3204	EO0061-0166742	213.664984	+23.177589	16.29		1	9.43	16.4	0.10	17.11		1	19.48	16.7	0.82
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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	0.644	14 14 39.63072	+23 10 39.2664	N131202215315	213.665128	+23.177574	1996.299	16.42	0.41	15.50	0.41	3	6.60	0.22

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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	0.578	14 14 39.62352	+23 10 39.1620	1131-0241240	213.665098	+23.177545	126	86	1984.0	-22	-44	4	19.14		14.58	15.92	15.91
2	2.413	14 14 39.81144	+23 10 39.2124	1131-0241242	213.665881	+23.177559	289	350	1973.2	0	0	2	19.86				18.05
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%202.413&%3cFONT%20COLOR=%27#CD5B45%27>14%2014%2039.81144&%3cFONT%20COLOR=%27#CD5B45%27>%2b23%2010%2039.2124&1131-0241242&213.665881&%2b23.177559&289&350&1973.2&%20%20%20%20%200&%20%20%20%20%200&2&19.86&%20&%20&%20&18.05%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6641d16c68cba&-out.add=.&-source=I/284/out&USNO-B1.0===1131-0241239&-out.orig=o' class='full'3 2.81614 14 39.43752+23 10 38.49241131-0241239213.664323+23.1773599996341973.2 0 0216.22    19.79   4 3.94914 14 39.80016+23 10 35.35321131-0241241213.665834+23.1764872167901973.2 0 02  19.14  19.90   5 7.65514 14 39.32616+23 10 44.94001131-0241237213.663859+23.1791509992351971.7 0 0220.49  20.68     6 8.48114 14 39.94680+23 10 46.00201131-0241243213.666445+23.1794459999991973.2 0 0220.73    20.27   7 9.15414 14 39.41544+23 10 30.03241131-0241238213.664231+23.1750099999991964.5 -92 -224320.4915.7020.91     %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	0.577	14 14 39.623328	+23 10 39.15984	1131-0244597	Y.	213.6650972	+23.1775444	B	-22.0	5.0	-44.0	3.0	18.350	Y	17.590	Y	15.920	B
2	2.411	14 14 39.811344	+23 10 39.20988	1131-0244599	..	213.6658806	+23.1775583	B	0.0	0.0	0.0	0.0	19.860	o
3	2.819	14 14 39.437328	+23 10 38.48988	1131-0244596	..	213.6643222	+23.1773583	B	0.0	0.0	0.0	0.0	16.220	o			19.790	B
4	3.950	14 14 39.799992	+23 10 35.34996	1131-0244598	..	213.6658333	+23.1764861	B	0.0	0.0	0.0	0.0					19.900	B
5	7.656	14 14 39.325992	+23 10 44.94000	1131-0244594	..	213.6638583	+23.1791500	B	0.0	0.0	0.0	0.0	20.680	B
6	8.478	14 14 39.946656	+23 10 45.99984	1131-0244600	..	213.6664444	+23.1794444	B	0.0	0.0	0.0	0.0	20.730	o			20.270	B
7	9.157	14 14 39.415344	+23 10 30.02988	1131-0244595	..	213.6642306	+23.1750083	B	-92.0	76.0	-224.0	81.0	20.910	B			15.700	e
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7	9.157	14 14 39.415344	+23 10 30.02988	1131-0244595	..	213.6642306	+23.1750083	B	-92.0	76.0	-224.0	81.0	20.910	B			15.700	e

%22>\EndTABLESORT

Note: This version of the GSC-II has no proper motions, but the limits on brightness which existed on GSC2.2 (F<18.5, B_j<19.5) were removed.

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	0.643	14 14 39.63096	+23 10 39.2664	N5U2015315	213.665129	+23.177574	1996.299	16.42	15.50	17.62	16.43	3	6.60	0.22

%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	0.483	14 14 39.62064	+23 10 39.0288	213.665086	+23.177508	-23.6	-51.5			19.14	14.58		15.92	15.91	4	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 mag	e_ mag	magGrvs mag	e_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	0.932	14 14 39.63890	+23 10 39.5712	213.665162	+23.177659	0.022	0.019	15.498	0.300	16.415	0.300	17.146	0.081	16.257	0.111	2005.2500	2005.2500	-23.6	5.9	-51.5	5.9
2	5.882	14 14 39.21576	+23 10 38.2730	213.663399	+23.177298	0.163	0.163	16.220	0.400	19.790	0.400	19.661	0.400	21.992	0.500	1973.2600	1973.2600	-62.2	7.1	-21.9	7.1
3	9.403	14 14 39.43005	+23 10 29.7007	213.664292	+23.174917	0.163	0.163	20.910	0.400	15.700	0.400	12.004	0.400	10.069	0.500	1964.5600	1964.5600	-69.6	7.2	-255.8	7.2

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