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	5.093	15 31 51.51216	+37 24 45.6300	1200-07576348	232.964634	+37.412675			17.7	17.6	1950.364

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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	8.886	15 31 51.86088	+37 24 47.7216	EO0107-0069582	232.966087	+37.413256	16.86		1	19.75	24.1	0.45	17.56		1	19.17	26.7	0.70
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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	4.219	15 31 51.39624	+37 24 44.9532	N133320218146	232.964151	+37.412487	1990.248			18.77	0.42	3	4.02	0.19
2	9.055	15 31 51.87384	+37 24 46.9764	N13332027821	232.966141	+37.413049	1993.292	15.22	0.42	16.51	0.41	3	10.20	0.47

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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	3.287	15 31 51.34872	+37 24 45.7704	1274-0288413	232.963953	+37.412714	138	304	1973.3	0	0	2		19.09			18.81
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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	3.286	15 31 51.348672	+37 24 45.77004	1274-0291415	Y.	232.9639528	+37.4127139	B	0.0	0.0	0.0	0.0	18.350	Y			19.090	e
2	4.169	15 31 51.425328	+37 24 45.59004	1274-0291416	..	232.9642722	+37.4126639	B	0.0	0.0	0.0	0.0	18.810	o
3	6.117	15 31 51.613992	+37 24 46.06992	1274-0291417	..	232.9650583	+37.4127972	B	28.0	8.0	10.0	9.0	16.050	B			15.810	B
4	6.931	15 31 51.685992	+37 24 46.18008	1274-0291419	..	232.9653583	+37.4128278	B	0.0	0.0	0.0	0.0	15.540	B			15.890	B
5	9.304	15 31 51.895992	+37 24 47.35008	1274-0291420	..	232.9662333	+37.4131528	B	-76.0	21.0	-4.0	92.0	16.360	B			14.610	B
6	11.825	15 31 52.107336	+37 24 47.84004	1274-0291421	..	232.9671139	+37.4132889	B	22.0	7.0	2.0	6.0	15.690	B			16.380	B
7	13.359	15 31 52.229328	+37 24 49.02984	1274-0291422	..	232.9676222	+37.4136194	B	0.0	0.0	0.0	0.0	15.910	B			18.880	e
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7	13.359	15 31 52.229328	+37 24 49.02984	1274-0291422	..	232.9676222	+37.4136194	B	0.0	0.0	0.0	0.0	15.910	B			18.880	e

%22>\Ahref='VizieR-5?-ref=VIZ66409f637e11b&-out.add=.&-source=I/297/out&NOMAD1===1274-0291406' class='full'826.45115 31 49.372656+37 24 31.129921274-0291406..232.9557194+37.4086472B 0.0 0.0 0.0 0.0        19.720B         928.31915 31 52.581336+37 25 09.810121274-0291423..232.9690889+37.4193917B 0.0 0.0 0.0 0.021.580B    20.620B         %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20This%20version%20of%20the%20%0a%3cB%3eGSC-II%0ahas%20no%20proper%20motions,%20but%20the%20limits%20on%20brightness%20which%20existed%20on%0a%20%28F<18.5,%20B_j<19.5%29%20were%20removed.%0a%25The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%0a%25the%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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	4.221	15 31 51.39648	+37 24 44.9532	N6AQ018146	232.964152	+37.412487	1990.248		18.77	19.17	19.15	3	4.02	0.19
2	9.055	15 31 51.87384	+37 24 46.9800	N6AQ007821	232.966141	+37.413050	1993.292	15.22	16.51	19.24	16.26	3	10.20	0.47
3	26.435	15 31 49.41024	+37 24 30.6036	N6AQ007751	232.955876	+37.408501	1993.292	19.64				3	2.77	0.11
4	28.378	15 31 52.63896	+37 25 09.3324	N6AQ018158	232.969329	+37.419259	1993.292	20.43	21.84			3	1.82	0.23

%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 [****ClosingBrace(s)Inserted****]
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%27%29%22%20onMouseOut=%22laz%28%29%22>r2mag

%22>%5cFONT SIZE=-1magimag
magNo

fl

1 3.22515 31 51.34992+37 24 45.9144232.963958+37.412754 0.2 0.2        19.09  18.81 2 0 2 4.02315 31 51.42624+37 24 45.9540232.964276+37.412765 -0.2 5.2    18.81      17.70 2 0 3 6.05015 31 51.60624+37 24 45.9792232.965026+37.412772 26.1 2.0    18.3616.0517.6715.8116.84 5 0 4 6.83415 31 51.68088+37 24 46.3860232.965337+37.412885 -0.5 2.0    18.3015.54  15.8917.45 4 0 5 9.06215 31 51.87336+37 24 46.7964232.966139+37.412999 -79.2 -104.6    20.1016.3619.8014.6117.00 5 0 611.76115 31 52.10208+37 24 47.7720232.967092+37.413270 18.2 -1.9      15.6917.7016.3816.82 4 0 713.24115 31 52.22136+37 24 48.8052232.967589+37.413557 -4.7 -17.8    17.6815.9118.88  16.63 4 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	3.941	15 31 51.41607	+37 24 45.8833	232.964234	+37.412745	0.023	0.025	18.810	0.400	18.676	0.201	18.301	0.090	17.397	0.117	2003.1900	2003.1900	-0.2	7.1	5.2	7.1
2	6.050	15 31 51.60627	+37 24 45.9790	232.965026	+37.412772	0.103	0.103	16.050	0.400	15.810	0.400	15.861	0.400	15.596	0.500	1976.1400	1976.1400	26.1	4.9	2.0	4.9
3	6.834	15 31 51.68083	+37 24 46.3858	232.965337	+37.412885	0.115	0.115	15.540	0.400	15.890	0.400	15.770	0.400	15.960	0.500	1983.3100	1983.3100	-0.5	6.0	2.0	6.0
4	9.441	15 31 51.90599	+37 24 46.9167	232.966275	+37.413032	0.050	0.051	16.505	0.300	15.218	0.300	20.856	0.110	20.058	0.134	2003.1900	2003.1900	-79.2	4.9	-104.6	6.1
5	11.760	15 31 52.10203	+37 24 47.7720	232.967092	+37.413270	0.115	0.115	15.690	0.400	16.380	0.400	16.156	0.400	16.613	0.500	1983.5900	1983.5900	18.2	6.0	-1.9	6.0
6	13.947	15 31 52.28331	+37 24 48.4277	232.967847	+37.413452	0.168	0.189	15.910	0.400	18.880	0.400	17.652	0.083	16.816	0.112	2003.1900	2003.1900	-4.7	5.3	-17.8	5.3
7	26.650	15 31 49.39196	+37 24 30.5290	232.955800	+37.408480	0.041	0.039	22.724	0.225	19.642	0.300	20.166	0.134	18.538	0.154	2003.3200	2003.3200	0.0	0.0	0.0	0.0
8	28.046	15 31 52.59361	+37 25 09.3460	232.969140	+37.419263	0.018	0.018	21.841	0.300	20.427	0.300	20.825	0.108	19.455	0.131	2003.1900	2003.1900	0.0	0.0	0.0	0.0

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