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	4.792	21 57 46.56888	+30 56 55.5000	1200-18743242	329.444037	+30.948750			19.8	19.6	1954.723

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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	4.987	21 57 46.54080	+30 56 55.9824	1209-0559298	329.443920	+30.948884	196	419	1975.8	0	0	5	20.11	19.89	20.76	19.79	18.59

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%22> Full

">  _r
arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"NOMAD1

YM

RAJ2000
degDEJ2000
degr

pmRA
mas/yre_
(...)pmDE
mas/yre_
(...)Bmag
magr_

Vmag
magr_

Rmag
magr_

Jmag
magHmag
magKmag
magR

1 4.98421 57 46.540656+30 56 55.979881209-0585293..329.4439194+30.9488833B 0.0 0.0 0.0 0.020.760B    19.790B         %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	4.829	21 57 46.55664	+30 56 55.6620	N2YS022942	329.443986	+30.948795	1987.653	19.43	22.20			3	2.25	0.22

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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	5.216	21 57 46.52112	+30 56 56.3820	329.443838	+30.948995	-9.4	9.5			20.11	20.76	19.89	19.79	18.59	5	1
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%205.216&%3cFONT%20COLOR=%27#CD5B45%27>21%2057%2046.52112&%3cFONT%20COLOR=%27#CD5B45%27>%2b30%2056%2056.3820&329.443838&%2b30.948995&%20%20%20%20-9.4&%20%20%20%20%209.5&%20&%20&20.11&20.76&19.89&19.79&18.59&%205&%201%3cBR%3e">\EndTABLESORT

Note:

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	4.591	21 57 46.54535	+30 56 55.4735	329.443939	+30.948743	0.046	0.045	22.200	0.300	19.427	0.300	20.202	0.101	19.029	0.126	2009.8700	2009.8700	-9.4	5.9	9.5	6.6

%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****]
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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 0.22221 57 46.3229619976+30 56 51.614764577329.44302391686+30.9476692225119.679625 3.574 27.379 3.574 27.379 9.04661e-02   -0.556 15.504 -0.556 15.504 1.89424e-01   3 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	0.237	21 57 46.3230432000	+30 56 51.672120000	N2YS105348	329.44301268000	+30.94768670000	10330010105348	2011.042	3											19.420	19.719	19.872
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1	0.237	21 57 46.3230432000	+30 56 51.672120000	N2YS105348	329.44301268000	+30.94768670000	10330010105348	2011.042	3											19.420	19.719	19.872

%22>\Ahref='VizieR-5?-ref=VIZ663b1f4ec840d&-out.add=.&-source=I/353/gsc242&-c=329.44391389000%20%2b30.94874828000,eq=ICRS,rs=2&-out.orig=o' class='full'2 4.56421 57 46.5393336000+30 56 55.493808000N2YS022942329.44391389000+30.94874828000 10330010229422012.3263    22.20000019.427200          22.69021.66820.75220.45320.24119.7478          16.26216.05612.589 9.065     2.254 0.217 97.0 3 6.01221 57 46.3170247269+30 56 57.711401504N2YS057877329.44298760303+30.94936427820 10330010578772009.8773                  24.53825.09623.95424.24521.143                               4 9.12621 57 46.5986328000+30 57 00.211536000N2YS080773329.44416097000+30.95005876000 10330010807732012.6920                  24.73025.48623.87021.62821.095                               %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"	WISE	RAJ2000 deg	DEJ2000 deg	eeMaj arcsec	eeMin arcsec	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	Hmag mag	Kmag mag	ccf	ex	var	d2M arcsec	2M
1	4.976	21 57 46.55462	+30 56 55.8576	J215746.55+305655.8	329.443978	+30.948849	0.560	0.505	Im	16.509	0.096	16.079	0.183	12.355	0.327	9.250					0000	0	0nnn		2M

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