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	1.213	01 27 54.44808	-15 06 44.1000	0675-00526667	021.976867	-15.112250			19.0	17.4	1954.671
2	3.378	01 27 54.33744	-15 06 45.5904	0675-00526659	021.976406	-15.112664			18.8	18.6	1954.671
3	4.728	01 27 54.29136	-15 06 46.7928	0675-00526655	021.976214	-15.112998			19.2	18.5	1954.671

%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	1.859	01 27 54.59088	-15 06 44.3016	0748-0015363	021.977462	-15.112306	688	241	1979.4	0	0	4		16.30	17.64	16.76	15.85
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%201.859&%3cFONT%20COLOR=%27#CD5B45%27>01%2027%2054.59088&%3cFONT%20COLOR=%27#CD5B45%27>-15%2006%2044.3016&0748-0015363&021.977462&-15.112306&688&241&1979.4&%20%20%20%20%200&%20%20%20%20%200&4&%20&16.30&17.64&16.76&15.85%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663f0da7c314e&-out.add=.&-source=I/284/out&USNO-B1.0===0748-0015362&-out.orig=o' class='full'2 4.96501 27 54.39552-15 06 47.84040748-0015362021.976648-15.113289389 231963.9 28 -22319.7119.1920.23     3 7.83801 27 54.25272-15 06 50.10120748-0015361021.976053-15.1139171269991963.9 -32 -96319.1919.2420.80     %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	1.840	01 27 54.372936	-15 06 43.64712	0748-0015447	.M	021.9765539	-15.1121242	M	0.0	0.0	0.0	0.0							16.164	15.867	15.486
2	1.856	01 27 54.590664	-15 06 44.30016	0748-0015449	..	021.9774611	-15.1123056	B	0.0	0.0	0.0	0.0	17.640	B			16.760	B
3	4.965	01 27 54.395328	-15 06 47.84004	0748-0015448	..	021.9766472	-15.1132889	B	28.0	10.0	-22.0	0.0	20.230	B			19.190	e
4	7.837	01 27 54.252672	-15 06 50.10012	0748-0015446	..	021.9760528	-15.1139167	B	-32.0	3.0	-96.0	37.0	20.800	B			19.240	e

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

%22h:m:s%22&%">\BegDIVclass='sort-down ' </A>string _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 1.38801 27 54.41472-15 06 43.8660S0M6007377021.976728-15.1121851986.647      17.013 3.06 0.09 %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	1.188	01 27 54.54336	-15 06 44.0316	021.977264	-15.112231	-13.4	-1.5				17.64	16.30		15.85	3	0
2	4.980	01 27 54.41376	-15 06 47.9268	021.976724	-15.113313	38.7	-29.9			19.71	20.23	19.19			3	0
3	7.983	01 27 54.26880	-15 06 50.3712	021.976120	-15.113992	-23.2	-114.4			19.19	20.80	19.24			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 [****ClosingBrace(s)Inserted****]
">

Fmag

%20

%22>%5cFONT SIZE=-1magBjmag
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 1.82701 27 54.37414-15 06 43.6609XPM 149-0010683021.976559-15.112128 -25.74 7.14 -26.19 7.44        16.165 0.13115.867 0.21015.486 0.232120111366019.017.4 76946.21694200M %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	1.188	01 27 54.54334	-15 06 44.0321	021.977264	-15.112231	0.133	0.133	17.640	0.400	16.300	0.400	16.540	0.400	15.479	0.500	1974.6500	1974.6500	-13.4	9.3	-1.5	9.3
2	4.980	01 27 54.41374	-15 06 47.9271	021.976724	-15.113313	0.133	0.133	20.230	0.400	19.190	0.400	19.406	0.400	18.551	0.500	1963.9900	1963.9900	38.7	10.1	-29.9	10.1
3	7.982	01 27 54.26880	-15 06 50.3707	021.976120	-15.113992	0.133	0.133	20.800	0.400	19.240	0.400	19.480	0.400	18.276	0.500	1963.9900	1963.9900	-23.2	10.1	-114.4	10.1

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RA_ICRS deg	e_ mas	DE_ICRS deg	e_ mas	Source [****ClosingBrace(s)Inserted****]
">

Source

%20

%22>Plx
mas

pmRA
mas/yr

pmDE
mas/yr

RADEcor

Dup

<FG>
e-/s

e_
e-/s

<Gmag>
mag

Var

1 1.08301 27 54.431393235-15 06 43.67933138021.9767974718 0.741-15.1121331476 0.3152452159316489820160       0.6900 3.7257e+02 1.5777e+0019.097NOT_AVAILABLE %0a%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	e_ mas	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Dup	FG e-/s	e_ e-/s	Gmag mag	e_ mag	FBP e-/s	e_ e-/s	BPmag mag	e_ mag	FRP e-/s	e_ e-/s	RPmag mag	e_ mag	BP-RP mag	RV km/s	e_ km/s	Teff K	AG mag	E(BP-RP) mag	Rad solRad	[****ClosingBrace(s)Inserted****]
solRad
">
	\BegDIVclass='sort-down '
</A>
decLum solLum
1	1.075	01 27 54.4106753608	-15 06 43.704915104	021.97680018204	0.3668	-15.11213293346	0.2576	2452159316489820160	1.3895	0.4825	19.964	0.968	1.700	0.407	0	3.7081e+02	8.5053e-01	19.2655	0.0025	1.6843e+02	7.4917e+00	19.7854	0.0483	5.6085e+02	6.7689e+00	17.8898	0.0131	1.8956

%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	Source	RA_ICRS deg	DE_ICRS deg	rest pc	b_ pc	B_ pc	rlen pc	ResFlag	ModFlag
1	1.075	01 27 54.4320436889	-15 06 43.678560463	2452159316489820160	021.97680018204	-15.11213293346	709.152011976907033	512.787542199470977	1080.951050358889916	363.787074024339	1	1

%0a%0a