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	3.519	12 59 28.91136	-12 20 09.2328	0750-08001730	194.870464	-12.335898			19.0	18.5	1956.267

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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	3.273	12 59 28.85856	-12 20 09.8772	S20330317070	194.870244	-12.336077	1982.300			19.34	0.37	3	2.13	0.18

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

%22>"h:m:s" ">\BegDIVclass='sort-down ' </A>string _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 1.10212 59 28.76808-12 20 07.14120776-0328443194.869867-12.3353179999991976.8 0 02  19.64  19.37   2 2.39112 59 28.81200-12 20 09.31200776-0328444194.870050-12.3359202884811973.8 -28 0419.3619.0119.2619.13   3 3.34212 59 28.84344-12 20 10.17240776-0328445194.870181-12.3361596759131967.8 0 0319.1419.51  18.77   %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	1.102	12 59 28.768008	-12 20 07.14012	0776-0331338	..	194.8698667	-12.3353167	B	0.0	0.0	0.0	0.0					19.370	B
2	2.390	12 59 28.812000	-12 20 09.30984	0776-0331339	..	194.8700500	-12.3359194	B	-28.0	9.0	0.0	15.0	19.260	B			19.130	B
3	3.339	12 59 28.843344	-12 20 10.16988	0776-0331340	..	194.8701806	-12.3361583	B	0.0	0.0	0.0	0.0	19.140	o			18.770	B

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

GSC2.3

%20

%22>RAJ2000
deg

DEJ2000
deg

Epoch
yr

Fmag
mag

jmag
mag

Vmag
mag

Nmag
mag

Class

a
pix

e

1 2.84412 59 28.86552-12 20 09.0492S72L007070194.870273-12.3358471991.11518.6119.54    3 3.45 0.19 %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	2.573	12 59 28.81704	-12 20 09.4920	194.870071	-12.335970	-28.3	-7.7			19.36	19.26	19.01			3	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_ [****ClosingBrace(s)Inserted****]
">

e_

%20

%22>%5cFONT SIZE=-1magalphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 2.42612 59 28.84489-12 20 08.7360194.870187-12.335760 0.400 0.40019.540 0.30018.608 0.30018.810 0.40018.030 0.5001991.12001991.1200 -33.6 8.9 36.0 8.6 2 2.57412 59 28.81708-12 20 09.4922194.870071-12.335970 0.133 0.13319.260 0.40019.010 0.40019.064 0.40018.790 0.5001965.99001965.9900 -28.3 9.7 -7.7 9.7 %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"	RAICRS deg	e_ mas	DEICRS deg	e_ mas	ID	Type	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Nobs	Dt yr	Rmag mag	Bmag mag	Nmag mag	Vmag mag	Jmag mag	Hmag mag	Kmag mag
1	2.476	12 59 28.846951	-12 20 08.78599	194.8701956	179.00	-12.3357739	193.00	41933+0007070	4	-17.9	7.1	41.0	7.6	4	34.847	18.608	19.540

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

pmxRA

%20

%22>%5cFONT SIZE=-1mas/yre_
(...)

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 2.86712 59 28.8876238339-12 20 09.264586521194.87024971511-12.3358941339220.271710 -40.579 28.056 -63.086 29.135 3.95820e+00   4.570 36.403 51.631 41.142 1.07977e+00   6 0PS1Gaia DR9+DR12Sloan2M %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC2	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	3.158	12 59 28.9055397326	-12 20 09.763481262	S72L007070	194.87032673000	-12.33592712000	220330317070	2011.815	3		20.257800	19.540800	18.608600							20.401	19.842	20.090	20.081	19.6582	17.761	18.036	17.365		18.176	16.474	16.153	12.443	9.045			3.453	0.190	114.9
[****ClosingBrace(s)Inserted****]
1	3.158	12 59 28.9055397326	-12 20 09.763481262	S72L007070	194.87032673000	-12.33592712000	220330317070	2011.815	3		20.257800	19.540800	18.608600							20.401	19.842	20.090	20.081	19.6582	17.761	18.036	17.365		18.176	16.474	16.153	12.443	9.045			3.453	0.190	114.9

%22>\Ahref='VizieR-5?-ref=VIZ6643129c3be8b8&-out.add=.&-source=I/353/gsc242&-c=194.87037663000%20-12.33589368000,eq=ICRS,rs=2&-out.orig=o' class='full'2 3.24312 59 28.8903912000-12 20 09.217248000S72L043318194.87037663000-12.33589368000 22033031433182012.4053                    20.43520.43020.52720.26219.6391                  20.78020.968       %0a%0a%0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	SN	n_	Gname	RAG "h:m:s"	DEG "d:m:s"	Gi deg	GVhel km/s	Gtype	mag mag	l_	Type	RA2000 "h:m:s"	DE2000 "d:m:s"	Disc
1	0.020	12 59 28.70000	-12 20 07.6000	2000bv		ANON	12 59 29	-12 20.1		35975		20.6	>	II:	12 59 28.700	-12 20 07.60	EROS, European Supernova Cosmology Consortium, et al

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