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	8.112	10 43 32.01888	+48 26 37.6800	1350-07822093	160.883412	+48.443800			13.8	14.3	1953.203

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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	7.892	10 43 32.04888	+48 26 37.7412	EO0709-0074707	160.883537	+48.443817	14.40		1	43.81	18.1	0.10	14.67		1	30.35	18.9	0.27
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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	8.379	10 43 31.98144	+48 26 37.6224	N23232022624	160.883256	+48.443784	1998.225	14.62	0.42	14.53	0.41	3	6.20	0.06

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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	1.702	10 43 32.32080	+48 26 44.0520	1384-0216086	160.884670	+48.445570	33	999	1994.7	0	0	2			20.22		18.73
2	4.995	10 43 32.93136	+48 26 41.9208	1384-0216090	160.887214	+48.444978	248	485	1975.2	0	0	2	20.59		20.52
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.995&%3cFONT%20COLOR=%27#CD5B45%27>10%2043%2032.93136&%3cFONT%20COLOR=%27#CD5B45%27>%2b48%2026%2041.9208&1384-0216090&160.887214&%2b48.444978&248&485&1975.2&%20%20%20%20%200&%20%20%20%20%200&2&20.59&%20&20.52&%20&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66362e63138f40&-out.add=.&-source=I/284/out&USNO-B1.0===1384-0216088&-out.orig=o' class='full'3 5.02910 43 32.49552+48 26 39.27121384-0216088160.885398+48.444242666 301975.2 0 0219.12  18.95     4 5.16710 43 32.10888+48 26 40.79041384-0216085160.883787+48.4446649999331978.8 -48 208519.7219.7617.7517.8217.51 5 7.96110 43 32.01288+48 26 37.91041384-0216083160.883387+48.4438641671661978.8 0 0514.4014.0613.6913.6416.14 6 8.12810 43 32.36952+48 26 36.26161384-0216087160.884873+48.4434069999991985.2 0 04  19.8916.2319.0718.15 %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	1.703	10 43 32.320656	+48 26 44.04984	1384-0219262	..	160.8846694	+48.4455694	B	0.0	0.0	0.0	0.0	20.220	B
2	4.995	10 43 32.931336	+48 26 41.92008	1384-0219266	..	160.8872139	+48.4449778	B	0.0	0.0	0.0	0.0	20.520	B
3	5.031	10 43 32.495328	+48 26 39.27012	1384-0219264	..	160.8853972	+48.4442417	B	0.0	0.0	0.0	0.0	18.950	B
4	5.169	10 43 32.108664	+48 26 40.79004	1384-0219261	..	160.8837861	+48.4446639	B	-48.0	63.0	208.0	31.0	17.750	B			17.820	B
5	7.962	10 43 32.012664	+48 26 37.91004	1384-0219259	Y.	160.8833861	+48.4438639	B	0.0	0.0	0.0	0.0	16.810	Y	16.420	Y	13.640	B
6	8.129	10 43 32.369328	+48 26 36.26016	1384-0219263	..	160.8848722	+48.4434056	B	0.0	0.0	0.0	0.0	16.230	B			19.070	B

%0ats_init%28%27!ext/nomad1.exe_5%27%29;">\Endscript

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	8.376	10 43 31.98144	+48 26 37.6260	N99E002624	160.883256	+48.443785	1998.225	14.62	14.53	16.12	16.41	3	6.20	0.06

%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	4.744	10 43 32.91336	+48 26 42.1188	160.887139	+48.445033	-8.9	4.9			20.59	20.52				2	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	5.557	10 43 32.05587	+48 26 40.8050	160.883566	+48.444668	0.115	0.103	17.750	0.400	17.820	0.400	17.783	0.400	17.756	0.500	1978.8400	1978.8400	-38.5	5.1	197.1	4.9
2	6.667	10 43 32.45052	+48 26 37.6447	160.885211	+48.443790	0.167	0.130	18.950	0.400	19.043	0.208	18.361	0.106	18.084	0.131	2002.2100	2002.2100	11.5	7.4	-6.7	7.4
3	8.511	10 43 31.97697	+48 26 37.4898	160.883237	+48.443747	0.072	0.050	14.529	0.300	14.616	0.300	16.654	0.081	15.953	0.110	2002.2100	2002.2100	-4.9	4.9	-1.8	4.9
4	8.581	10 43 32.05244	+48 26 36.9061	160.883552	+48.443585	0.133	0.133	16.230	0.400	19.070	0.400	18.636	0.400	20.604	0.500	1983.0800	1983.0800	-72.0	6.7	16.0	6.5

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