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	3.538	18 08 54.74880	-27 10 14.3832	0600-30709321	272.228120	-27.170662		*	19.0	16.5	1980.527

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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	2.431	18 08 54.58944	-27 10 13.3932	S301232359879	272.227456	-27.170387	1996.686	15.35	0.43			0	3.89	0.27
2	9.450	18 08 55.17312	-27 10 04.7316	S3012323125595	272.229888	-27.167981	1996.686	18.16	0.59			3	1.38	0.35

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

">

%22> Full

">  _r
arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"USNO-B1.0

RAJ2000
degDEJ2000
dege_RAJ2000
mase_DEJ2000
masEpoch
yrpmRA
mas/yrpmDE
mas/yrNdet

B1mag
magR1mag
magB2mag
magR2mag
magImag
mag 1 2.70118 08 54.67416-27 10 13.78200628-0805933272.227809-27.170495186 861976.0 0 04  15.2018.5116.0413.60 2 4.69018 08 54.76944-27 10 15.51000628-0805938272.228206-27.1709754753051974.8 -54 -63  17.6515.9416.85   3 9.81918 08 55.21944-27 10 04.88280628-0805986272.230081-27.168023361 671976.0 -10 164  17.9517.2518.7717.80 %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	2.699	18 08 54.673992	-27 10 13.77984	0628-0873936	YM	272.2278083	-27.1704944	B	0.0	0.0	0.0	0.0	18.510	B	15.590	Y	16.040	B	12.130	11.121	10.858
2	4.689	18 08 54.769344	-27 10 15.51000	0628-0873942	..	272.2282056	-27.1709750	B	-54.0	16.0	-6.0	10.0	15.940	B			16.850	B
3	7.641	18 08 54.434664	-27 10 04.01988	0628-0873911	YM	272.2268111	-27.1677833	Y	10.9	9.0	-56.2	9.0			15.980	Y			13.939	13.148	12.961
4	9.820	18 08 55.219344	-27 10 04.87992	0628-0873997	..	272.2300806	-27.1680222	B	-10.0	13.0	16.0	2.0	17.250	B			18.770	B

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-30/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	[****ClosingBrace(s)Inserted****]
">

%22h:m:s%22&%">\BegDIVclass='sort-down ' </A>string _DEJ2000
"d:m:s"CMC14

f_

RAICRS
deg

DEICRS
deg

r'mag
mag

Nt

Jmag
mag

Hmag
mag

Ksmag
mag

1 2.96418 08 54.61824-27 10 14.0340180854.6-271014  272.227576-27.17056515.781 312.13011.12110.858 2 7.53818 08 54.44352-27 10 04.0836180854.4-271004  272.226848-27.16780116.530 113.94013.14912.962 %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	2.427	18 08 54.58968	-27 10 13.3896	S9TN059879	272.227457	-27.170386	1996.686	15.35		15.92	14.45	0	3.89	0.27
2	9.457	18 08 55.17336	-27 10 04.7244	S9TN125595	272.229889	-27.167979	1996.686	18.16				3	1.38	0.35

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

fl

%20

%22> 1 2.99818 08 54.61944-27 10 14.0700272.227581-27.170575 -27.9 -8.012.13010.858  18.5115.2016.0413.60 5 0 2 4.92418 08 54.77784-27 10 15.7188272.228241-27.171033 -55.3 -9.4      15.9417.6516.85   3 0 3 8.88918 08 55.17960-27 10 05.7108272.229915-27.168253 -98.7 40.7      20.12  19.21   2 0 4 9.77818 08 55.23048-27 10 05.1348272.230127-27.168093 -11.0 13.0      17.2517.9518.7717.80 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"	SPMID	RAJ2000 deg	e_ mas	DEJ2000 deg	e_ mas	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Epoch yr	N1	N2	Nc	Bmag mag	Vmag mag	Jmag mag	Hmag mag	Kmag mag	2M	igal	A
1	2.962	18 08 54.611280	-27 10 14.01636	5094446596	272.2275470	145.3	-27.1705601	147.8	-5.90	4.86	-5.50	5.00	1981.10	4	0	1	18.13	16.41	12.130	11.121	10.858	2M	0	A

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%0a%25%25%25%20Introduction%20to%20UCAC4%20VizieR%20page%0a%3cEM%3e%25Note:%20%0a%20%20see%20the%20UCAC4%20document,%20and%20the%0a%20%20the%20fix%20for%20high%20proper%20motion%20stars.%0a%20%20The%20UCAC%20home%20page%20is%20available%20at%0a%20%20http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/ucac.%0a%20%20%3cBR%3ePlease%20%3cB%3eacknowledge%20the%20usage%0a%20%20of%20the%20UCAC4%0a%0a%25%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	UCAC4	RAJ2000 deg	DEJ2000 deg	ePos mas	f.mag mag	of	db [****ClosingBrace(s)Inserted****]
">

db

%20

%22>pmRA
mas/yr

pmDE
mas/yr

Jmag
mag

Kmag
mag

Bmag
mag

Vmag
mag

rmag
mag

imag
mag

H

A

b

h

Z

B

L

N

S

1 3.02818 08 54.610248-27 10 14.08116315-148177272.2275427-27.1705781 6815.8370 0 -3.6 -9.612.13010.858        000000011 2 7.41018 08 54.415776-27 10 04.38132315-148168272.2267324-27.1678837 32516.0669 0 111.8 -25.113.94012.962        000000017 %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"	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	0.100	18 08 54.65000	-27 10 10.9999	272.227708	-27.169722	0.299	0.299	20.009	0.026	17.337	0.026	17.677	0.026	16.143	0.026	2005.0000	2005.0000	0.0	0.0	0.0
2	1.905	18 08 54.66002	-27 10 13.0002	272.227750	-27.170278	0.299	0.299	22.543	0.352	19.550	0.352	19.866	0.352	18.217	0.352	2005.0000	2005.0000	0.0	0.0	0.0
3	2.064	18 08 54.79998	-27 10 11.5999	272.228333	-27.169889	0.299	0.299	22.260	0.168	19.447	0.168	19.779	0.168	18.192	0.168	2005.0000	2005.0000	0.0	0.0	0.0
4	2.677	18 08 54.84999	-27 10 10.8999	272.228542	-27.169694	0.299	0.299	21.918	0.169	19.631	0.169	19.981	0.169	18.602	0.169	2005.0000	2005.0000	0.0	0.0	0.0
5	2.752	18 08 54.61000	-27 10 08.4001	272.227542	-27.169000	0.299	0.299	21.710	0.134	19.749	0.134	20.094	0.134	18.863	0.134	2005.0000	2005.0000	0.0	0.0	0.0
6	2.817	18 08 54.84999	-27 10 10.2000	272.228542	-27.169500	0.299	0.299	22.348	0.201	20.049	0.201	20.399	0.201	19.016	0.201	2005.0000	2005.0000	0.0	0.0	0.0
7	3.028	18 08 54.61029	-27 10 14.0812	272.227543	-27.170578	0.045	0.045	18.510	0.400	15.347	0.300	15.245	0.011	13.469	0.011	1983.8900	1983.8900	-3.6	4.9	-9.6	4.9
8	3.891	18 08 54.90000	-27 10 09.0996	272.228750	-27.169194	0.299	0.299	22.822	0.218	20.352	0.218	20.699	0.218	19.243	0.218	2005.0000	2005.0000	0.0	0.0	0.0
9	3.940	18 08 54.45002	-27 10 14.0001	272.226875	-27.170556	0.299	0.299	21.016	0.142	19.377	0.142	19.701	0.142	18.633	0.142	2005.0000	2005.0000	0.0	0.0	0.0
10	4.334	18 08 54.73000	-27 10 06.8998	272.228042	-27.168583	0.299	0.299	21.645	0.100	19.510	0.100	19.859	0.100	18.548	0.100	2005.0000	2005.0000	0.0	0.0	0.0
[****ClosingBrace(s)Inserted****]
10	4.334	18 08 54.73000	-27 10 06.8998	272.228042	-27.168583	0.299	0.299	21.645	0.100	19.510	0.100	19.859	0.100	18.548	0.100	2005.0000	2005.0000	0.0	0.0	0.0

%22>\Ahref='VizieR-5?-ref=VIZ663ceb41e06fe&-out.add=.&-source=I/324/igsl3&sourceId=4063011505688772608' class='full'11 4.40418 08 54.93999-27 10 13.1998272.228917-27.170333 0.299 0.29921.582 0.08119.182 0.08119.531 0.08118.104 0.0812005.00002005.0000 0.0 0.0 0.0   12 4.65518 08 54.41998-27 10 14.6001272.226750-27.170722 0.299 0.29921.084 0.13019.323 0.13019.656 0.13018.525 0.1302005.00002005.0000 0.0 0.0 0.0   13 4.77618 08 54.29998-27 10 12.1003272.226250-27.170028 0.299 0.29921.862 0.12919.740 0.12920.089 0.12918.783 0.1292005.00002005.0000 0.0 0.0 0.0   14 4.90918 08 54.90000-27 10 07.5002272.228750-27.168750 0.299 0.29920.996 0.07218.846 0.07219.195 0.07217.876 0.0722005.00002005.0000 0.0 0.0 0.0   15 4.92518 08 54.77789-27 10 15.7193272.228241-27.171033 0.133 0.13315.940 0.40016.850 0.40020.528 0.32819.089 0.3281974.88001974.8800 -55.3 9.8 -9.4 9.8 16 4.96418 08 54.88003-27 10 15.0001272.228667-27.170833 0.299 0.29922.462 0.33920.313 0.33920.663 0.33919.345 0.3392005.00002005.0000 0.0 0.0 0.0   17 5.32718 08 54.32001-27 10 14.0997272.226333-27.170583 0.299 0.29921.776 0.10719.061 0.10719.398 0.10717.847 0.1072005.00002005.0000 0.0 0.0 0.0   18 5.53718 08 54.76999-27 10 05.7999272.228208-27.168278 0.299 0.29921.572 0.10519.457 0.10519.806 0.10518.503 0.1052005.00002005.0000 0.0 0.0 0.0   19 5.60018 08 54.65000-27 10 05.4999272.227708-27.168194 0.299 0.29921.222 0.06219.034 0.06219.385 0.06218.049 0.0622005.00002005.0000 0.0 0.0 0.0   20 5.78418 08 54.46003-27 10 05.9003272.226917-27.168306 0.299 0.29922.472 0.23220.207 0.23220.558 0.23219.188 0.2322005.00002005.0000 0.0 0.0 0.0   %0a%0aResult%20truncated%20to%20%3cB%3e20%20rows%20on%20a%20total%20of%20%3cB%3e60%20matching%20rows%3cBR%3e%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	2.976	18 08 54.61779	-27 10 14.0448	180854.6-271014	272.227574	-27.170568	15.665		13	12.130	11.121	10.858
2	7.695	18 08 54.44017	-27 10 03.9322	180854.4-271003	272.226834	-27.167759	16.360		2	13.940	13.149	12.962

%0a%0a