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	0.529	17 10 08.62272	+74 43 43.0716	1575-03759437	257.535928	+74.728631			15.2	13.9	1953.452
2	7.237	17 10 08.32872	+74 43 35.6124	1575-03759424	257.534703	+74.726559			19.0	18.7	1955.380

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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	0.262	17 10 08.56752	+74 43 42.7224	EO0756-0003858	257.535698	+74.728534	13.21		1	14.92	21.2	0.53	15.03		1	26.69	21.3	1.82
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.262&%3cFONT%20COLOR=%27#CD5B45%27>17%2010%2008.56752&%3cFONT%20COLOR=%27#CD5B45%27>%2b74%2043%2042.7224&EO0756-0003858&257.535698&%2b74.728534&13.21&%20&%201&%20%2014.92&%20%2021.2&%200.53&15.03&%20&%201&%20%2026.69&%20%2021.3&%20%201.82&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66293d9566565&-out.add=.&-source=I/267/out&APM-ID===EO1433-0452806&-out.orig=o' class='full'2 0.62617 10 08.57400+74 43 43.3812EO1433-0452806257.535725+74.72871712.68   1 20.01 19.4 0.4814.21   1 17.99 19.5 1.53   316.08817 10 04.99416+74 43 50.9628EO0756-0003730257.520809+74.73082318.83  -1 -0.43 5.1 0.1221.64  -1 -0.56 3.2 2.81   416.32317 10 05.00736+74 43 51.5028EO1433-0452699257.520864+74.73097319.25  -1 0.36 4.3 0.0621.92L 0     2.67   517.95417 10 12.52752+74 43 34.4604EO1433-0452914257.552198+74.72623919.07  -1 -0.60 4.6 0.1621.92L 0     2.85   618.67917 10 12.61344+74 43 33.5712EO0756-0003985257.552556+74.72599218.83  -1 -1.37 4.8 0.0721.81L 0     2.98   %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	0.570	17 10 08.63808	+74 43 43.0428	N11023311591	257.535992	+74.728623	1993.631	13.71	0.38	13.82	0.08	3	8.55	0.57

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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	0.650	17 10 08.65344	+74 43 43.1004	1647-0088115	257.536056	+74.728639	69	53	1978.6	0	0	5	15.22	13.65	15.47	13.62	13.52
2	7.007	17 10 08.33208	+74 43 35.8428	1647-0088114	257.534717	+74.726623	217	556	1975.4	0	0	4	19.63	18.77		19.70	18.02
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%207.007&%3cFONT%20COLOR=%27#CD5B45%27>17%2010%2008.33208&%3cFONT%20COLOR=%27#CD5B45%27>%2b74%2043%2035.8428&1647-0088114&257.534717&%2b74.726623&217&556&1975.4&%20%20%20%20%200&%20%20%20%20%200&4&19.63&18.77&%20&19.70&18.02%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66293d9566565&-out.add=.&-source=I/284/out&USNO-B1.0===1647-0088116&-out.orig=o' class='full'3 9.15217 10 08.91672+74 43 51.82321647-0088116257.537153+74.7310626869991976.4 0 02  19.19    18.33 415.90817 10 05.08536+74 43 51.21121647-0088107257.521189+74.730892178 891984.5 0 04  19.2821.0319.4418.55 518.07217 10 12.57288+74 43 34.55041647-0088125257.552387+74.7262641173051984.5 0 04  18.9821.0419.4118.14 618.41817 10 12.87144+74 43 36.36121647-0088130257.553631+74.7267679995581966.4 86 396320.5019.5921.02     %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	0.649	17 10 08.653344	+74 43 43.10004	1647-0089072	YM	257.5360556	+74.7286389	B	0.0	0.0	0.0	0.0	16.250	Y	16.030	Y	13.620	B	14.336	13.667	13.348
2	7.010	17 10 08.332008	+74 43 35.83992	1647-0089071	..	257.5347167	+74.7266222	B	0.0	0.0	0.0	0.0	19.630	o			19.700	B
3	9.149	17 10 08.916672	+74 43 51.81996	1647-0089073	..	257.5371528	+74.7310611	B	0.0	0.0	0.0	0.0					19.190	e
4	15.907	17 10 05.085336	+74 43 51.21012	1647-0089064	..	257.5211889	+74.7308917	B	0.0	0.0	0.0	0.0	21.030	B			19.440	B
5	18.071	17 10 12.572664	+74 43 34.55004	1647-0089082	..	257.5523861	+74.7262639	B	0.0	0.0	0.0	0.0	21.040	B			19.410	B
6	18.418	17 10 12.871344	+74 43 36.36012	1647-0089087	..	257.5536306	+74.7267667	B	86.0	95.0	396.0	14.0	21.020	B			19.590	e
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6	18.418	17 10 12.871344	+74 43 36.36012	1647-0089087	..	257.5536306	+74.7267667	B	86.0	95.0	396.0	14.0	21.020	B			19.590	e

%22>\EndTABLESORT

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	0.572	17 10 08.63808	+74 43 43.0464	N43H001591	257.535992	+74.728624	1993.631	13.71	13.82	15.19	13.54	3	8.55	0.57
2	14.236	17 10 05.06544	+74 43 38.5824	N43H010851	257.521106	+74.727384	1993.631	20.50				3	1.87	0.51
3	15.573	17 10 05.11536	+74 43 50.7612	N43H001582	257.521314	+74.730767	1993.631	19.49	21.03		18.38	3	2.13	0.18
4	18.393	17 10 12.61560	+74 43 34.1796	N43H001561	257.552565	+74.726161	1993.631	19.45	20.92		18.13	3	2.31	0.26

%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 [****ClosingBrace(s)Inserted****]
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%27%29%22%20onMouseOut=%22laz%28%29%22>r2mag

%22>%5cFONT SIZE=-1magimag
magNo

fl

1 0.40317 10 08.60160+74 43 42.9528257.535840+74.728598 -5.9 3.614.33713.34815.2215.4713.6513.6213.52 6 0 2 6.82317 10 08.33496+74 43 36.0264257.534729+74.726674 2.2 5.7    19.63  18.7719.7018.02 4 0 3 8.75317 10 08.73000+74 43 51.5244257.536375+74.730979 -20.5 -23.3        19.19  18.33 2 0 415.78717 10 05.09544+74 43 51.0456257.521231+74.730846 5.7 2.0      21.0319.2819.4418.55 4 0 518.06317 10 12.57840+74 43 34.6116257.552410+74.726281 2.1 8.8      21.0418.9819.4118.14 4 0 618.69717 10 12.92352+74 43 36.1164257.553848+74.726699 110.6 393.6    20.5021.0219.59     3 1 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%0a%25%25%25%20Introduction%20to%20UCAC4%20VizieR%20page%0a%3cEM%3e%25Note:%20%0a%20%20see%20the%20UCAC4%20document,%20and%20the%0a%20%20the%20fix%20for%20high%20proper%20motion%20stars.%0a%20%20The%20UCAC%20home%20page%20is%20available%20at%0a%20%20http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/ucac.%0a%20%20%3cBR%3ePlease%20%3cB%3eacknowledge%20the%20usage%0a%20%20of%20the%20UCAC4%0a%0a%25%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	UCAC4	RAJ2000 deg	DEJ2000 deg	ePos mas	f.mag mag	of	db	pmRA mas/yr	pmDE mas/yr	Jmag mag	Kmag mag	Bmag mag	Vmag mag	rmag mag	imag mag	H	A	b	h	Z	B	L	N	S
1	0.397	17 10 08.592144	+74 43 43.01832	824-018248	257.5358006	+74.7286162	119	16.028	0	0	-6.1	3.8	14.337	13.348	17.022	15.863	15.665	15.308	0	0	0	0	0	0	0	1	0

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	e_RAJ2000 [****ClosingBrace(s)Inserted****]
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e_RAJ2000

%20

%22>%5cFONT SIZE=-1(...)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 0.39717 10 08.59217+74 43 43.0180257.535801+74.728616 0.088 0.07913.817 0.30013.705 0.30015.487 0.08014.428 0.1101983.89001983.8900 -6.1 7.8 3.8 7.2 2 6.82417 10 08.33496+74 43 36.0258257.534729+74.726674 0.115 0.11519.630 0.40019.700 0.40019.664 0.40019.637 0.5001975.40001975.4000 2.2 5.7 5.7 5.7 314.36017 10 04.98053+74 43 39.3200257.520752+74.727589 0.080 0.17722.862 0.26220.497 0.30020.858 0.19819.402 0.2122001.71002001.7100 0.0 0.0 0.0 0.0 415.73817 10 05.08598+74 43 50.8887257.521192+74.730802 0.007 0.00721.030 0.30019.485 0.30019.443 0.08717.967 0.1152001.71002001.7100 5.7 6.8 2.0 6.8 518.25617 10 12.59914+74 43 34.3500257.552496+74.726208 0.007 0.00720.916 0.30019.446 0.30019.328 0.08717.787 0.1152001.71002001.7100 2.1 6.8 8.8 6.8 618.69717 10 12.92353+74 43 36.1160257.553848+74.726699 0.163 0.13321.020 0.40019.590 0.40019.832 0.40018.712 0.5001966.49001966.4900 110.6 7.9 393.6 7.2 %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	0.454	17 10 08.590925	+74 43 42.96214	824-073918	257.5358808	+74.7286092	2013.478	15.471	0.015	6.0	2.3	14.337	13.668	13.348	17.022	15.863	16.563	15.665	15.308
2	18.222	17 10 12.591734	+74 43 34.36715	824-073923	257.5524656	+74.7262131	2013.565	18.853	0.072

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