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	3.083	09 27 36.28416	+37 00 33.1704	1200-06313641	141.901184	+37.009214			15.8	14.4	1953.940

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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	2.756	09 27 36.31344	+37 00 33.1524	EO0925-0041022	141.901306	+37.009209	15.24		1	16.99	21.1	0.06	16.94		1	13.44	18.9	1.70
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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	2.815	09 27 36.32616	+37 00 32.6808	N23332316275	141.901359	+37.009078	1998.291	14.49	0.42	14.32	0.41	3	5.63	0.07

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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	3.132	09 27 36.27888	+37 00 33.2100	1270-0202390	141.901162	+37.009225	88	40	1979.2	0	0	5	15.28	13.69	14.04	14.19	13.49
2	5.248	09 27 36.46752	+37 00 39.2724	1270-0202393	141.901948	+37.010909	999	999	1998.1	0	0	2			20.13		18.80
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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	3.135	09 27 36.278664	+37 00 33.21000	1270-0205102	YM	141.9011611	+37.0092250	B	0.0	0.0	0.0	0.0	18.350	Y			14.190	B	15.202	14.557	14.076
2	5.246	09 27 36.467328	+37 00 39.26988	1270-0205105	..	141.9019472	+37.0109083	B	0.0	0.0	0.0	0.0	20.130	B
3	7.049	09 27 36.847344	+37 00 28.14012	1270-0205107	..	141.9035306	+37.0078167	B	0.0	0.0	0.0	0.0	19.880	B			19.170	B
4	7.446	09 27 37.065336	+37 00 30.29004	1270-0205108	..	141.9044389	+37.0084139	B	60.0	7.0	-16.0	10.0	20.250	B			18.500	B
5	7.505	09 27 36.240000	+37 00 40.73004	1270-0205100	..	141.9010000	+37.0113139	B	0.0	0.0	0.0	0.0	20.930	B			18.310	B
6	7.739	09 27 35.983344	+37 00 38.19996	1270-0205098	..	141.8999306	+37.0106111	B	0.0	0.0	0.0	0.0	20.300	B
7	8.108	09 27 36.265344	+37 00 41.54004	1270-0205101	..	141.9011056	+37.0115389	B	-136.0	32.0	200.0	72.0	20.420	B			19.350	B
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7	8.108	09 27 36.265344	+37 00 41.54004	1270-0205101	..	141.9011056	+37.0115389	B	-136.0	32.0	200.0	72.0	20.420	B			19.350	B

%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	2.810	09 27 36.32640	+37 00 32.6844	N9GT006275	141.901360	+37.009079	1998.291	14.49	14.32	16.31	13.96	3	5.63	0.07

%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	3.213	09 27 36.27504	+37 00 33.0840	141.901146	+37.009190	-3.7	-0.7	15.203	14.076	15.28	14.04	13.69	14.19	13.49	6	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	2.815	09 27 36.32635	+37 00 32.6749	141.901360	+37.009076	0.400	0.400	14.316	0.300	14.486	0.300	14.420	0.400	14.471	0.500	1998.2900	1998.2900	1.6	6.9	-4.2	5.7
2	3.286	09 27 36.27113	+37 00 32.9942	141.901130	+37.009165	0.006	0.006	14.040	0.400	14.190	0.400	15.909	0.080	14.755	0.110	2003.0600	2003.0600	-3.7	4.0	-0.7	4.0
3	7.429	09 27 36.23789	+37 00 40.6301	141.900991	+37.011286	0.115	0.115	20.930	0.400	18.310	0.400	18.278	0.400	16.501	0.500	1984.3400	1984.3400	1.8	6.5	1.8	6.5
4	7.477	09 27 36.87092	+37 00 27.8139	141.903629	+37.007726	0.115	0.115	19.880	0.400	19.170	0.400	19.333	0.400	18.714	0.500	1977.4200	1977.4200	73.3	5.9	-18.3	5.4
5	7.803	09 27 37.08366	+37 00 29.9644	141.904515	+37.008323	0.043	0.045	20.250	0.400	18.500	0.400	20.571	0.137	19.068	0.156	2003.0600	2003.0600	52.1	6.2	-15.1	6.2
6	8.706	09 27 36.23835	+37 00 42.0519	141.900993	+37.011681	0.115	0.133	20.420	0.400	19.350	0.400	19.569	0.400	18.693	0.500	1986.1400	1986.1400	-147.4	6.2	214.0	6.4
7	9.473	09 27 36.20985	+37 00 42.7390	141.900874	+37.011872	0.112	0.110	20.935	0.261	18.861	0.206	18.260	0.190	16.606	0.205	2003.0600	2003.0600	0.0	0.0	0.0

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