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	2.760	23 59 42.94344	+34 20 42.0432	1200-20140695	359.928931	+34.345012			12.7	12.9	1954.758

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	APM-ID	RAJ2000 deg	DEJ2000 deg	rmag mag	l_	rClass	rStel	rDiam arcsec	rEll	bmag mag	l_	bClass	bStel	bDiam arcsec	b-r mag	Mflag
1	2.224	23 59 42.91488	+34 20 41.6400	EO0405-0434171	359.928812	+34.344900	13.01		1	7.52	30.3	0.54	13.97		1	6.13	32.2	0.95
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%202.224&%3cFONT%20COLOR=%27#CD5B45%27>23%2059%2042.91488&%3cFONT%20COLOR=%27#CD5B45%27>%2b34%2020%2041.6400&EO0405-0434171&359.928812&%2b34.344900&13.01&%20&%201&%20%20%207.52&%20%2030.3&%200.54&13.97&%20&%201&%20%20%206.13&%20%2032.2&%20%200.95&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663a3e999fc8f&-out.add=.&-source=I/267/out&APM-ID===EO1247-0362283&-out.orig=o' class='full'2 2.50223 59 42.94800+34 20 41.6400EO1247-0362283359.928950+34.34490012.39   1 19.12 29.3 0.5012.37   2 5.52 44.0 -0.03* %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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	2.302	23 59 42.93648	+34 20 41.4996	N00102007093	359.928902	+34.344861	1991.773	12.35	0.42	12.65	0.42	3	11.97	0.56

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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	1.427	23 59 42.89136	+34 20 40.8120	1243-0534075	359.928714	+34.344670	24	5	1971.8	0	0	2		12.37		11.92
2	2.195	23 59 42.90888	+34 20 41.6616	1243-0534076	359.928787	+34.344906	103	275	1976.9	0	0	5	12.79	12.58	12.39	12.07	12.05
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%202.195&%3cFONT%20COLOR=%27#CD5B45%27>23%2059%2042.90888&%3cFONT%20COLOR=%27#CD5B45%27>%2b34%2020%2041.6616&1243-0534076&359.928787&%2b34.344906&103&275&1976.9&%20%20%20%20%200&%20%20%20%20%200&5&12.79&12.58&12.39&12.07&12.05%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663a3e999fc8f&-out.add=.&-source=I/284/out&USNO-B1.0===1243-0534072&-out.orig=o' class='full'3 9.11423 59 42.63600+34 20 31.03081243-0534072359.927650+34.3419532526791966.1 0 0318.6617.96  18.42   4 9.33823 59 42.75336+34 20 30.59161243-0534074359.928139+34.3418311065901973.5 18 36418.8618.58  19.2218.23 %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	1.425	23 59 42.891336	+34 20 40.80984	1243-0564877	YM	359.9287139	+34.3446694	B	0.0	0.0	0.0	0.0	17.990	Y			11.920	B	15.148	15.243	14.271
2	2.192	23 59 42.908664	+34 20 41.66016	1243-0564878	..	359.9287861	+34.3449056	B	0.0	0.0	0.0	0.0	12.390	B			12.070	B
3	4.248	23 59 42.985392	+34 20 43.50084	1243-0564879	.M	359.9291058	+34.3454169	M	0.0	0.0	0.0	0.0							15.087	15.500	14.329
4	9.115	23 59 42.636000	+34 20 31.03008	1243-0564874	..	359.9276500	+34.3419528	B	0.0	0.0	0.0	0.0	18.660	o			18.420	B
5	9.339	23 59 42.753336	+34 20 30.59016	1243-0564876	..	359.9281389	+34.3418306	B	18.0	3.0	36.0	17.0	18.860	o			19.220	B

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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>Full

%22> _r
arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"CMC14

f_

RAICRS
degDEICRS
degr'mag
magNt

Jmag
magHmag
magKsmag
mag 1 0.95723 59 42.86112+34 20 40.5276235942.8+342040  359.928588+34.34459116.264 2       %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	2.304	23 59 42.93648	+34 20 41.5032	N080007093	359.928902	+34.344862	1991.773	12.35	12.65	13.96	13.02	3	11.97	0.56

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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	0.914	23 59 42.85872	+34 20 40.4952	359.928578	+34.344582	-11.4	-5.9	15.149	14.271			12.37	11.92		3	0
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.914&%3cFONT%20COLOR=%27#CD5B45%27>23%2059%2042.85872&%3cFONT%20COLOR=%27#CD5B45%27>%2b34%2020%2040.4952&359.928578&%2b34.344582&%20%20%20-11.4&%20%20%20%20-5.9&15.149&14.271&%20&%20&12.37&11.92&%20&%203&%200%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663a3e999fc8f&-out.add=.&-source=I/317/sample&PPMXL===1979322912974945993' class='full'2 1.06823 59 42.86664+34 20 40.6176359.928611+34.344616 -14.2 -28.715.14914.27112.7912.3912.5812.0712.05 6 1 3 9.25123 59 42.75888+34 20 30.6744359.928162+34.341854 18.3 37.5    18.86  18.5819.2218.23 4 0 4 9.42123 59 42.64752+34 20 30.6852359.927698+34.341857 5.0 -17.1    18.66  17.9618.42   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_ mag	alphaEpoch yr	deltaEpoch yr	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)
1	1.068	23 59 42.86665	+34 20 40.6178	359.928611	+34.344616	0.066	0.069	12.650	0.300	12.351	0.300	12.419	0.400	12.107	0.500	1989.6300	1989.6300	-14.2	3.9	-28.7	3.9
2	1.166	23 59 42.87294	+34 20 40.6779	359.928637	+34.344633	0.054	0.046	15.916	0.200	11.920	0.400	15.342	0.080	14.685	0.110	2004.6900	2004.6900	-11.4	5.2	-5.9	5.2
3	4.252	23 59 42.98590	+34 20 43.5009	359.929108	+34.345417	0.299	0.299	19.774	0.500	17.437	0.500	17.528	0.400	15.883	0.500	1998.7800	1998.7800	0.0	0.0	0.0
4	9.252	23 59 42.75885	+34 20 30.6739	359.928162	+34.341854	0.115	0.115	18.860	0.400	19.220	0.400	19.097	0.400	19.295	0.500	1973.5400	1973.5400	18.3	5.7	37.5	5.7
5	9.421	23 59 42.64755	+34 20 30.6850	359.927698	+34.341857	0.133	0.133	18.660	0.400	18.420	0.400	18.472	0.400	18.205	0.500	1966.1100	1966.1100	5.0	7.3	-17.1	7.3

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RA_ICRS
deg

DE_ICRS
deg

r'mag
mag

pflag

Nt

Jmag
mag

Hmag
mag

Ksmag
mag

1 0.95723 59 42.86110+34 20 40.5277235942.8+342040359.928588+34.34459116.264   215.149     %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"	URAT1	RAICRS deg	DEICRS deg	Epoch yr	f.mag mag	e_ mag	pmRA mas/yr	pmDE mas/yr	Jmag mag	Hmag mag	Kmag mag	Bmag mag	Vmag mag	gmag mag	rmag mag	imag mag
1	2.505	23 59 42.862271	+34 20 40.61334	622-603721	359.9288986	+34.3449419	2013.366	16.300	0.021	68.0	88.1	15.149	15.244	14.271	16.410	16.081	16.058	15.778	15.393
2	3.879	23 59 42.982285	+34 20 43.48907	622-603722	359.9289472	+34.3453739	2013.743	16.378		-31.5	-10.4	15.088	15.500	14.329

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