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	4.602	20 01 29.53080	-26 57 36.8208	0600-42032738	300.373045	-26.960228			20.1	18.0	1981.058

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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	4.171	20 01 29.51736	-26 57 36.3312	0630-1076046	300.372989	-26.960092	136	91	1974.1	0	0	5	20.60	19.39	19.42	19.43	18.72

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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 4.17020 01 29.517336-26 57 36.330120630-1155276..300.3729889-26.9600917B 0.0 0.0 0.0 0.019.420B    19.430B         %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	3.801	20 01 29.50872	-26 57 35.9064	SCGF021900	300.372953	-26.959974	1991.542	19.76	19.70		18.99	3	2.57	0.32

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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	4.461	20 01 29.49552	-26 57 36.5436	300.372898	-26.960151	-2.5	-0.2			20.60	19.42	19.39	19.43	18.72	5	0
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%204.461&%3cFONT%20COLOR=%27#CD5B45%27>20%2001%2029.49552&%3cFONT%20COLOR=%27#CD5B45%27>-26%2057%2036.5436&300.372898&-26.960151&%20%20%20%20-2.5&%20%20%20%20-0.2&%20&%20&20.60&19.42&19.39&19.43&18.72&%205&%200%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	3.991	20 01 29.48936	-26 57 36.0109	300.372872	-26.960003	0.400	0.400	19.703	0.300	19.759	0.300	19.727	0.400	19.688	0.500	1991.5400	1991.5400	-30.4	14.8	-11.9	14.3
2	4.461	20 01 29.49554	-26 57 36.5439	300.372898	-26.960151	0.103	0.103	19.420	0.400	19.430	0.400	19.411	0.400	19.337	0.500	1974.1800	1974.1800	-2.5	5.9	-0.2	5.9

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

%20

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

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Chi2RA

pmGRA
mas/yr

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mas/yr

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(...)

pmxDE
mas/yr

e_
(...)

Chi2DE

pmGDE
mas/yr

Nobs

Flag

PS1

Gaia

DR9+DR12

Sloan

2M

1 7.89620 01 29.0206984155-26 57 30.393322728300.37094780320-26.9584914873721.720552 9.057 15.972 3.520 20.274 3.07386e-02   -17.603 19.111 -54.232 26.977 1.82655e-01   5 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	3.492	20 01 29.5647357138	-26 57 35.556885432	SCGF021900	300.37307279000	-26.95991688000	2333003321900	2011.991	3			19.703200	19.759100		18.986200						20.708	20.229	19.971		18.097											2.573	0.322	94.5
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1	3.492	20 01 29.5647357138	-26 57 35.556885432	SCGF021900	300.37307279000	-26.95991688000	2333003321900	2011.991	3			19.703200	19.759100		18.986200						20.708	20.229	19.971		18.097											2.573	0.322	94.5

%22>\Ahref='VizieR-5?-ref=VIZ6635582c3d3735&-out.add=.&-source=I/353/gsc242&-c=300.37300241000%20-26.96013192000,eq=ICRS,rs=2&-out.orig=o' class='full'2 4.29820 01 29.5205784000-26 57 36.474912000SCGF127368300.37300241000-26.96013192000 233300331273682012.5083                    21.16120.80720.41220.32619.4803          17.17016.21412.439 8.872           3 7.37420 01 29.6417450534-26 57 39.678332710SCGF165129300.37350727106-26.96102175909 233300331651292006.0004                                                21.55121.270       4 7.85920 01 29.0301168000-26 57 30.582432000SCGF132562300.37095882000-26.95849512000 233300331325622012.2920                      21.76821.00220.46920.0972                             %0a%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"	AllWISE	RAJ2000 deg	DEJ2000 deg	Im	W1mag mag	e_ mag	W2mag mag	e_ mag	W3mag mag	e_ mag	W4mag mag	e_ mag	Jmag mag	e_ mag	Hmag mag	e_ mag	Kmag mag	e_ mag	ccf	ex	var	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	qph	d2M arcsec	2M
1	4.687	20 01 29.481640	-26 57 36.71704	J200129.48-265736.7	300.3728402	-26.9601992	Im	17.170	0.159	16.214		12.439		8.872								0000	0	nnnn	-1257	1986	-425	2178	BUUU		2M

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