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	5.216	10 37 58.26816	+50 51 55.0908	1350-07805256	159.492784	+50.865303			18.0	17.0	1955.120

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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	5.621	10 37 58.24200	+50 51 55.4724	EO0673-0355312	159.492675	+50.865409	16.91		2	21.75	14.5	0.31	19.06		1	13.00	11.5	2.15

%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	5.065	10 37 58.32216	+50 51 55.6056	N23232003343	159.493009	+50.865446	1998.225	16.73	0.43	17.96	0.41	3	5.19	0.29

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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	5.511	10 37 58.61736	+50 51 57.9420	1408-0218860	159.494239	+50.866095	999	999	1983.5	0	0	3		19.12	20.80	16.76
2	5.577	10 37 58.23000	+50 51 55.1808	1408-0218859	159.492625	+50.865328	176	333	1979.6	0	0	5	18.56	17.13	16.29	16.28	18.28
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%205.577&%3cFONT%20COLOR=%27#CD5B45%27>10%2037%2058.23000&%3cFONT%20COLOR=%27#CD5B45%27>%2b50%2051%2055.1808&1408-0218859&159.492625&%2b50.865328&176&333&1979.6&%20%20%20%20%200&%20%20%20%20%200&5&18.56&17.13&16.29&16.28&18.28%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663e10de16a21&-out.add=.&-source=I/284/out&USNO-B1.0===1408-0218858&-out.orig=o' class='full'3 6.47110 37 58.07616+50 51 53.60041408-0218858159.491984+50.8648891579991969.1 0 0319.4219.6018.88     %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	5.509	10 37 58.617336	+50 51 57.93984	1408-0222758	..	159.4942389	+50.8660944	B	0.0	0.0	0.0	0.0	20.800	B			16.760	B
2	5.577	10 37 58.230000	+50 51 55.18008	1408-0222757	..	159.4926250	+50.8653278	B	0.0	0.0	0.0	0.0	16.290	B			16.280	B
3	6.472	10 37 58.075992	+50 51 53.60004	1408-0222756	..	159.4919833	+50.8648889	B	0.0	0.0	0.0	0.0	18.880	B			19.600	e

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2.3 [****ClosingBrace(s)Inserted****]
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GSC2.3

%22>RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 5.06510 37 58.32240+50 51 55.6092N99C003343159.493010+50.8654471998.22516.7317.96    3 5.19 0.29 %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	5.698	10 37 58.21896	+50 51 55.2420	159.492579	+50.865345	-7.2	1.6			18.56	16.29	17.13	16.28	18.28	5	0
2	6.679	10 37 58.07256	+50 51 54.4068	159.491969	+50.865113	-6.5	13.5			19.42	18.88	19.60			3	0
3	7.347	10 37 58.45440	+50 51 59.3676	159.493560	+50.866491	-42.3	34.5				20.80	19.12	16.76		3	1

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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 [****ClosingBrace(s)Inserted****]
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magRF

%20

%22>%5cFONT SIZE=-1mage_
mag

magG
mag

e_
mag

magGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 5.35610 37 58.25775+50 51 55.2017159.492741+50.865334 0.058 0.05617.962 0.30016.730 0.30017.647 0.08316.649 0.1122002.03002002.0300 -7.2 5.1 1.6 5.1 2 6.67910 37 58.07253+50 51 54.4073159.491969+50.865113 0.133 0.13318.880 0.40019.600 0.40019.367 0.40019.848 0.5001969.17001969.1700 -6.5 6.7 13.5 6.7 %0a%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"	RA_ICRS deg	DE_ICRS deg	rmag mag	pmRA mas/yr	e_ (...)	pmxRA mas/yr	e_ (...)	Chi2RA	pmGRA mas/yr	pmDE mas/yr	e_ (...)	pmxDE mas/yr	e_ (...)	Chi2DE	pmGDE mas/yr	Nobs	Flag	PS1	Gaia	DR9+DR12	Sloan	2M
1	5.498	10 37 58.2645171418	+50 51 55.256800326	159.49270764388	+50.86537663971	19.942215	-13.900	20.924	-15.088	20.952	1.52591e-01		9.910	16.910	51.726	34.793	5.13974e-02		5	0	PS1	Gaia	DR9+DR12	Sloan	2M

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	[****ClosingBrace(s)Inserted****]
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%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>stringGSC2

RA_ICRS
deg

DE_ICRS
deg

objID

Epoch
yr

Class

Gmag
mag

OMag
mag

Bjmag
mag

Fpgmag
mag

Epgmag
mag

Npgmag
mag

Umag
mag

Bmag
mag

Vmag
mag

umag
mag

gmag
mag

rmag
mag

imag
mag

zmag
mag

ymag
mag

Jmag
mag

Hmag
mag

Ksmag
mag

Zmag
mag

Ymag
mag

W1mag
mag

W2mag
mag

W3mag
mag

W4mag
mag

FUVmag
mag

NUVmag
mag

a
pix

e
pix

PA
pix

1 5.39810 37 58.2510624000+50 51 55.173888000N99C003343159.49271276000+50.86532608000 1232320033432013.1873    17.96200016.730100          19.55220.70520.20719.62919.86919.4797          15.28614.99311.730 9.12820.50120.543 5.189 0.293123.6 2 8.35810 38 02.2042558167+50 52 38.173431262N99C053624159.49492180000+50.86692540000 12323200536242010.5604                                        15.58715.11511.865 8.966           3 9.03710 37 58.2210456000+50 52 00.094908000N99C039676159.49258769000+50.86669303000 12323200396762013.6253                  22.44421.17220.93220.80122.085                               %0a%0a%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20SDSS%20is%20also%20available%20from%20http://www.sdss.org/%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	mode	cl	SDSS	m_	zsp	umag mag	e_ mag	gmag mag	e_ mag	rmag mag	e_ mag	imag mag	e_ mag	zmag mag	e_ mag	RA_ICRS deg	DE_ICRS deg	ObsDate yr	Q
1	5.339	10 37 58.25552	+50 51 55.1335	1	3	J103758.25+505155.1		0.12107	19.433	0.090	18.374	0.016	17.660	0.013	17.335	0.014	17.114	0.040	159.492734	+50.865316	2002.0353	3
2	5.368	10 37 58.25304	+50 51 55.1372	2	3	J103758.25+505155.1	*		19.502	0.091	18.387	0.018	17.655	0.012	17.377	0.015	17.183	0.044	159.492722	+50.865319	2002.2481	3
3	8.740	10 37 58.21464	+50 51 59.6916	1	6	J103758.21+505159.6			22.377	0.299	22.087	0.082	22.234	0.142	21.724	0.146	21.833	0.474	159.492561	+50.866581	2002.0353	3
4	8.989	10 37 58.20552	+50 51 59.9364	2	6	J103758.20+505159.9			24.497	1.286	22.151	0.114	21.987	0.121	21.448	0.114	21.757	0.469	159.492523	+50.866649	2002.2481	3

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