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	2.302	23 39 35.61600	-18 25 15.7224	0675-37478815	354.898400	-18.421034			19.6	18.1	1981.250

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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	1.465	23 39 35.52072	-18 25 17.1912	0715-0865163	354.898003	-18.421442	445	654	1980.9	-184	-116	4		19.55	20.62	20.33	18.72
2	2.954	23 39 35.69880	-18 25 15.3804	0715-0865164	354.898745	-18.420939	473	441	1979.7	84	34	4		19.07	20.57	18.80	18.72

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>	\BegDIVclass='sort-down ' </A>
dec 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	1.466	23 39 35.520672	-18 25 17.19012	0715-0932597	..	354.8980028	-18.4214417	B	-184.0	17.0	-116.0	24.0	20.620	B			20.330	B
2	2.953	23 39 35.698656	-18 25 15.38004	0715-0932598	..	354.8987444	-18.4209389	B	84.0	17.0	34.0	16.0	20.570	B			18.800	B

Note: This version of the GSC-II has no proper motions, but the limits on brightness which existed on GSC2.2 (F<18.5, B_j<19.5) were removed.

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	2.814	23 39 35.63640	-18 25 15.2400	SBPG000976	354.898485	-18.420900	1995.504	19.14	20.68		19.02	3	2.91	0.13

%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	1.605	23 39 35.52432	-18 25 16.9068	354.898018	-18.421363	-186.0	-119.1				20.62	19.55	20.33	18.72	4	0
[****ClosingBrace(s)Inserted****]
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%201.605&%3cFONT%20COLOR=%27#CD5B45%27>23%2039%2035.52432&%3cFONT%20COLOR=%27#CD5B45%27>-18%2025%2016.9068&354.898018&-18.421363&%20%20-186.0&%20%20-119.1&%20&%20&%20&20.62&19.55&20.33&18.72&%204&%200%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66387f904f139&-out.add=.&-source=I/317/sample&PPMXL===1401504250850671457' class='full'2 3.09123 39 35.70360-18 25 15.2616354.898765-18.420906 82.3 26.8      20.5719.0718.8018.72 4 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_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	1.605	23 39 35.52435	-18 25 16.9072	354.898018	-18.421363	0.115	0.115	20.620	0.400	20.330	0.400	20.396	0.400	20.091	0.500	1980.9000	1980.9000	-186.0	6.4	-119.1	6.4
2	3.091	23 39 35.70362	-18 25 15.2618	354.898765	-18.420906	0.115	0.115	20.684	0.300	19.139	0.300	19.380	0.400	18.186	0.500	1979.7100	1979.7100	82.3	6.7	26.8	6.7

%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	[****ClosingBrace(s)Inserted****]
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mas/yr&%">\BegDIVclass='sort-down ' </A>dece_
(...)pmxRA
mas/yr

e_
(...)Chi2RA

pmGRA
mas/yrpmDE
mas/yre_
(...)pmxDE
mas/yre_
(...)Chi2DE

pmGDE
mas/yrNobs

Flag

PS1

Gaia

DR9+DR12

Sloan

2M

1 2.18323 39 35.5913525013-18 25 16.029225914354.89837040323-18.4210659782820.878952 24.968 36.882 -0.982 37.366 5.23125e-01   19.170 24.174 12.167 24.354 1.03699e+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	2.167	23 39 35.6236632000	-18 25 15.867876000	SBPG029135	354.89843193000	-18.42107441000	2323101029135	2012.316	3											21.802	20.926	20.137	20.106	19.9453						15.697	15.244	12.175	8.786
[****ClosingBrace(s)Inserted****]
1	2.167	23 39 35.6236632000	-18 25 15.867876000	SBPG029135	354.89843193000	-18.42107441000	2323101029135	2012.316	3											21.802	20.926	20.137	20.106	19.9453						15.697	15.244	12.175	8.786

%22>\Ahref='VizieR-5?-ref=VIZ66387f904f139&-out.add=.&-source=I/353/gsc242&-c=354.89859279000%20-18.42094197000,eq=ICRS,rs=2&-out.orig=o' class='full'2 2.75023 39 35.6037421496-18 25 16.290466234SBPG000976354.89859279000-18.42094197000 232310109762013.6640    20.68430019.139800  19.017300        21.67820.81020.268                           2.911 0.130 60.5 %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	2.053	23 39 35.59879	-18 25 15.9691	J233935.59-182515.9	354.898328	-18.421103	0.392	0.368	Im	15.932	0.068	15.466	0.142	12.232		9.008					0000	0	00nn		2M

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