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	0.461	20 45 46.76808	-19 53 35.2032	0675-35816926	311.444867	-19.893112			20.0	18.1	1982.628

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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	0.538	20 45 46.77336	-19 53 35.1024	0701-0797498	311.444889	-19.893084	86	103	1979.1	0	0	4		18.71	20.58	18.66	16.86

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">  _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 0.54020 45 46.773336-19 53 35.099880701-0872952.M311.4448889-19.8930833B 0.0 0.0 0.0 0.020.580B    18.660B15.31914.69114.317   %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	0.746	20 45 46.77408	-19 53 34.8900	SC7C003786	311.444892	-19.893025	1990.726	18.59	20.76		16.88	0	1.93	0.10

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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	0.338	20 45 46.77672	-19 53 35.2968	311.444903	-19.893138	3.7	-12.5	15.319	14.317		20.58	18.71	18.66	16.86	5	0
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.338&%3cFONT%20COLOR=%27#CD5B45%27>20%2045%2046.77672&%3cFONT%20COLOR=%27#CD5B45%27>-19%2053%2035.2968&311.444903&-19.893138&%20%20%20%20%203.7&%20%20%20-12.5&15.319&14.317&%20&20.58&18.71&18.66&16.86&%205&%200%3cBR%3e">\EndTABLESORT

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 mag	Bjmag 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	0.313	20 45 46.77698	-19 53 35.3219	XPM 140-1374465	311.444904	-19.893145	5.20	-13.62	4.09	-13.62	18.594	20.762		16.876	15.319	0.044	14.691	0.042	14.317	0.068	1132891473	20.0	18.1	597	18.112246	0	0	M

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%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>decRAJ2000
degDEJ2000
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 0.33820 45 46.77675-19 53 35.2970311.444903-19.893138 0.069 0.06920.762 0.30018.594 0.30018.740 0.40017.182 0.5001992.95001992.9500 3.7 4.9 -12.5 4.9 %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	0.526	20 45 46.777983	-19 53 35.10601	311.4449083	142.00	-19.8930850	58.00	48584+0003786	0	2.8	4.6	-11.5	1.9	5	40.168	18.594	20.762	16.876		15.319	14.691	14.317

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