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	10.014	06 23 59.54088	-18 58 49.6920	0675-03076805	095.998087	-18.980470			20.3	18.1	1983.518
2	10.443	06 24 00.37080	-18 59 06.1800	0675-03077194	096.001545	-18.985050			19.7	18.1	1983.518
3	12.218	06 24 00.29016	-18 58 47.9532	0675-03077155	096.001209	-18.979987			19.9	18.1	1983.518

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eUSNO-B%20Catalog%20presents%20positions,%20proper%20motions,%20%0amagnitudes%20un%20blue,%20red%20and%20infrared,%20as%20well%20as%20star/galaxy%20estimators%0afor%201,045,175,762%20objects%20derived%20from%203,648,832,040%20separate%20observations.%0aThe%20data%20were%20taken%20from%20scans%20of%207,435%20Schmidt%20plates%0ataken%20from%20various%20sky%20surveys%20during%20the%20last%2050%20years.%3cBR%3e%0aUSNO-B1.0%20catalog%20was%20created%20by%20Dave%20Monet%20and%20collaborators%0aat%20http://www.nofs.navy.mil/data/fchpix/%20%3cBR%3e%0a%3cB%3e%3cFONT%20COLOR=%27#EE0000%27>%20Note%20that%20the%20star/galaxy%20estimators%20may%20be%20mixed%20up%0a%20in%20dense%20regions.%0a%3cP%3e%0a

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	9.961	06 23 59.53680	-18 58 49.7820	0710-0078995	095.998070	-18.980495	265	44	1977.4	0	0	3		19.44	21.30	19.48
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%209.961&%3cFONT%20COLOR=%27#CD5B45%27>06%2023%2059.53680&%3cFONT%20COLOR=%27#CD5B45%27>-18%2058%2049.7820&0710-0078995&095.998070&-18.980495&265&%2044&1977.4&%20%20%20%20%200&%20%20%20%20%200&3&%20&19.44&21.30&19.48&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663e52aa6972c&-out.add=.&-source=I/284/out&USNO-B1.0===0710-0079004&-out.orig=o' class='full'210.50006 24 00.35016-18 59 06.52200710-0079004096.001459-18.9851453013181980.1 0 04  19.0520.6119.3417.33 312.24206 24 00.29352-18 58 47.95320710-0079003096.001223-18.979987 73 461980.1 0 04  18.9820.7619.1117.77 422.88206 23 58.29480-18 58 53.37120710-0078981095.992895-18.981492999 311979.7 -66 -3143  20.13  20.8118.48 524.57306 23 58.62000-18 59 15.66240710-0078987095.994250-18.9876842363251975.5 0 02  19.64  19.95   624.66806 23 59.73552-18 59 23.18280710-0078996095.998898-18.989773 561001975.5 0 02  20.07  20.03   728.31706 23 58.31736-18 59 16.46160710-0078983095.992989-18.9879061539991988.4 0 03    21.7920.6217.30 %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	9.964	06 23 59.536656	-18 58 49.77984	0710-0079734	..	095.9980694	-18.9804944	B	0.0	0.0	0.0	0.0	21.300	B			19.480	B
2	10.497	06 24 00.349992	-18 59 06.51984	0710-0079743	..	096.0014583	-18.9851444	B	0.0	0.0	0.0	0.0	20.610	B			19.340	B
3	12.243	06 24 00.293328	-18 58 47.94996	0710-0079742	.M	096.0012222	-18.9799861	B	0.0	0.0	0.0	0.0	20.760	B			19.110	B	16.565	15.784	15.756
4	22.885	06 23 58.294656	-18 58 53.37012	0710-0079720	..	095.9928944	-18.9814917	B	-66.0	112.0	-314.0	1.1					20.810	B
5	24.571	06 23 58.620000	-18 59 15.65988	0710-0079726	..	095.9942500	-18.9876833	B	0.0	0.0	0.0	0.0					19.950	B
6	24.665	06 23 59.735328	-18 59 23.17992	0710-0079735	..	095.9988972	-18.9897722	B	0.0	0.0	0.0	0.0					20.030	B
7	28.317	06 23 58.317336	-18 59 16.46016	0710-0079721	..	095.9929889	-18.9879056	B	0.0	0.0	0.0	0.0	21.790	B			20.620	B
[****ClosingBrace(s)Inserted****]
7	28.317	06 23 58.317336	-18 59 16.46016	0710-0079721	..	095.9929889	-18.9879056	B	0.0	0.0	0.0	0.0	21.790	B			20.620	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	0.369	06 23 59.83968	-18 58 58.5552	S3UY031101	095.999332	-18.982932	1988.068				18.38	3	1.99	0.50
2	10.202	06 24 00.35904	-18 59 06.0072	S3UY023866	096.001496	-18.985002	1996.123	18.83	21.06		18.46	3	2.88	0.19
3	10.251	06 23 59.52192	-18 58 49.5660	S3UY023892	095.998008	-18.980435	1996.123	18.92	21.49		18.50	3	2.83	0.14
4	12.390	06 24 00.27792	-18 58 47.6616	S3UY023894	096.001158	-18.979906	1996.123	18.51	20.88		17.62	3	3.62	0.37
5	21.302	06 23 58.44240	-18 58 51.7836	S3UY029713	095.993510	-18.981051	1996.123	19.87				3	2.00	0.35
6	21.900	06 24 01.10112	-18 58 45.4512	S3UY029724	096.004588	-18.979292	1996.123	20.02				3	1.50	0.11
7	24.330	06 23 59.73240	-18 59 22.8408	S3UY023827	095.998885	-18.989678	1996.123	19.28	21.71			3	2.37	0.15
8	27.136	06 23 58.36704	-18 59 15.4536	S3UY023841	095.993196	-18.987626	1996.123	19.44	22.02			3	4.56	0.70

%0a%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	[****ClosingBrace(s)Inserted****]
">

mag&%">\BegDIVclass='sort-down ' </A>decKmag
magb1mag
mag

b2mag
magr1mag
magr2mag
magimag
magNo

fl

110.10406 23 59.52552-18 58 49.7064095.998023-18.980474 -12.2 0.1      21.3019.4419.48   3 0 210.19706 24 00.33744-18 59 06.2772096.001406-18.985077 -7.8 0.9      20.6119.0519.3417.33 4 0 312.24906 24 00.28608-18 58 47.8848096.001192-18.979968 -8.9 0.416.56515.756  20.7618.9819.1117.77 5 0 424.07706 23 58.20912-18 58 53.3280095.992538-18.981480 -93.6 -315.1        20.1320.8118.48 3 1 524.18506 23 58.63056-18 59 15.2592095.994294-18.987572 1.1 6.9        19.6419.95   2 0 624.49706 23 59.74464-18 59 23.0208095.998936-18.989728 -3.3 1.5        20.0720.03   2 0 727.79706 23 58.32912-18 59 15.8388095.993038-18.987733 3.4 7.5      21.79  20.6217.30 3 0 %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx mas/yr	pmDEx mas/yr	Fmag mag	Bjmag mag	Vmag mag	Nmag mag	Jmag mag	e_ mag	Hmag mag	e_ mag	Kmag mag	e_ mag	2Mkey	Bmag mag	Rmag mag	Fld	dT yr	fg	fs	M
1	12.084	06 24 00.26402	-18 58 47.9027	XPM 142-0097447	096.001100	-18.979973	-23.14	6.04	-24.18	5.79	18.508	20.881		17.617	16.565	0.100	15.784	0.102	15.756	0.225	236149237	19.9	18.1	556	15.537350	0	0	M

%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 [****ClosingBrace(s)Inserted****]
">

RAJ2000

%20

%22>%5cFONT SIZE=-1degDEJ2000
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_
(...)

110.10406 23 59.52553-18 58 49.7060095.998023-18.980474 0.133 0.13321.486 0.30018.917 0.30018.911 0.40017.155 0.5001977.44001977.4400 -12.2 7.8 0.1 7.8 210.19706 24 00.33749-18 59 06.2769096.001406-18.985077 0.115 0.11521.064 0.30018.827 0.30018.953 0.40017.357 0.5001980.10001980.1000 -7.8 7.5 0.9 7.5 312.24906 24 00.28605-18 58 47.8851096.001192-18.979968 0.101 0.10120.881 0.30018.508 0.30018.586 0.40016.923 0.5001984.35001984.3500 -8.9 6.5 0.4 6.5 424.18606 23 58.63054-18 59 15.2590095.994294-18.987572 0.163 0.16322.018 0.30019.440 0.30019.430 0.40017.670 0.5001975.59001975.5900 1.1 7.9 6.9 7.9 524.49706 23 59.74468-18 59 23.0211095.998936-18.989728 0.163 0.16321.708 0.30019.277 0.30019.332 0.40017.641 0.5001975.59001975.5900 -3.3 7.9 1.5 7.9 627.79706 23 58.32916-18 59 15.8393095.993038-18.987733 0.133 0.13321.790 0.40020.620 0.40020.850 0.40019.903 0.5001988.45001988.4500 3.4 21.7 7.5 21.7 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-40/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC15	RA_ICRS deg	DE_ICRS deg	r'mag mag	pflag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	0.240	06 23 59.85123	-18 58 58.4581	062359.8-185858	095.999380	-18.982905	17.349		1

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source	Plx mas	pmRA mas/yr	pmDE mas/yr	RADEcor	Dup	<FG> e-/s	e_ e-/s	<Gmag> mag	Var
1	10.040	06 23 59.566801872	-18 58 49.48264316	095.9981950078	0.804	-18.9804118453	1.261	2943141217351556736				-0.766	0	2.9160e+02	2.2798e+00	19.363	NOT_AVAILABLE
2	12.374	06 24 00.288455643	-18 58 47.76092416	096.0012018985	0.425	-18.9799335900	0.667	2943141217351556992				-0.543	0	5.8507e+02	2.4139e+00	18.607	NOT_AVAILABLE
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>12.374&%3cFONT%20COLOR=%27#CD5B45%27>06%2024%2000.288455643&%3cFONT%20COLOR=%27#CD5B45%27>-18%2058%2047.76092416&096.0012018985&%200.425&-18.9799335900&%200.667&2943141217351556992&%20&%20&%20&-0.543&0&%205.8507e%2b02&%202.4139e%2b00&18.607&NOT_AVAILABLE%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663e52aa6972c&-out.add=.&-source=I/337/gaia&-c=095.9988773487%20-18.9897649105,eq=ICRS,rs=2&-out.orig=o' class='full'324.64406 23 59.730563678-18 59 23.15367787095.9988773487 2.193-18.9897649105 3.5982943141217351548800      -0.4210 1.5227e+02 2.9028e+0020.068NOT_AVAILABLE %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	ipix	comp	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	B1mag mag	B2mag mag	R1mag mag	R2mag mag	Imag mag	GaiaId	Gmag mag	Clone	Nosc
1	10.002	06 23 59.561787600	-18 58 49.55816856	095.9981741150	-18.9804328246	2748807626364060147		4.741	5.035					21.30	19.44	19.48		2943141217351556736	19.363
2	12.361	06 24 00.293221128	-18 58 47.81365140	096.0012217547	-18.9799482365	2748807629613723841		-4.506	3.515	16.565	15.784	15.756		20.76	18.98	19.11	17.77	2943141217351556992	18.607
3	24.613	06 23 59.737251696	-18 59 23.12942280	095.9989052154	-18.9897581730	2748807598647461749		-6.324	-1.616						20.07	20.03		2943141217351548800	20.068

%0a%0a