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	0.244	05 00 45.99480	+17 46 17.2524	1050-01581165	075.191645	+17.771459			16.1	16.5	1955.881
2	12.849	05 00 46.75008	+17 46 24.2004	1050-01581319	075.194792	+17.773389			18.1	17.0	1955.881
3	13.308	05 00 45.47088	+17 46 27.9624	1050-01581046	075.189462	+17.774434			16.2	15.5	1955.881
4	22.847	05 00 45.34608	+17 45 56.2104	1050-01581016	075.188942	+17.765614			19.7	18.0	1955.881
5	24.022	05 00 44.42280	+17 46 25.2516	1050-01580799	075.185095	+17.773681			19.1	18.5	1955.881

%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	12.617	05 00 46.74264	+17 46 23.9412	N303332113209	075.194761	+17.773317	1986.831	16.55	0.33	18.24	0.35	0	3.08	0.07
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>12.617&%3cFONT%20COLOR=%27#CD5B45%27>05%2000%2046.74264&%3cFONT%20COLOR=%27#CD5B45%27>%2b17%2046%2023.9412&N303332113209&075.194761&%2b17.773317&1986.831&16.55&%200.33&18.24&%200.35&0&%20%203.08&%200.07%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ66396d492d5f3c&-out.add=.&-source=I/271/out&GSC2.2===N303332113236' class='full'213.16805 00 45.45888+17 46 27.6672N303332113236075.189412+17.7743521986.83115.27 0.3316.65 0.340 3.80 0.06 323.30905 00 45.35160+17 45 55.6704N303332113062075.188965+17.7654641986.83117.88 0.34    3 2.64 0.12 424.10305 00 44.41320+17 46 25.1112N303332113224075.185055+17.7736421986.83118.22 0.34    3 2.74 0.18 %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eUSNO-B%20Catalog%20presents%20positions,%20proper%20motions,%20%0amagnitudes%20un%20blue,%20red%20and%20infrared,%20as%20well%20as%20star/galaxy%20estimators%0afor%201,045,175,762%20objects%20derived%20from%203,648,832,040%20separate%20observations.%0aThe%20data%20were%20taken%20from%20scans%20of%207,435%20Schmidt%20plates%0ataken%20from%20various%20sky%20surveys%20during%20the%20last%2050%20years.%3cBR%3e%0aUSNO-B1.0%20catalog%20was%20created%20by%20Dave%20Monet%20and%20collaborators%0aat%20http://www.nofs.navy.mil/data/fchpix/%20%3cBR%3e%0a%3cB%3e%3cFONT%20COLOR=%27#EE0000%27>%20Note%20that%20the%20star/galaxy%20estimators%20may%20be%20mixed%20up%0a%20in%20dense%20regions.%0a%3cP%3e%0a

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	0.539	05 00 45.96888	+17 46 17.2632	1077-0074255	075.191537	+17.771462	42	75	1973.6	0	0	4	16.96	16.39	20.60	19.75
2	5.316	05 00 45.64416	+17 46 18.4404	1077-0074253	075.190184	+17.771789	999	999	1995.2	0	0	2			20.66		18.92
3	11.284	05 00 45.54672	+17 46 07.8312	1077-0074251	075.189778	+17.768842	999	419	1993.4	0	0	3			20.85	19.25	18.84
4	12.567	05 00 46.73616	+17 46 23.9916	1077-0074261	075.194734	+17.773331	35	103	1978.2	2	-6	5	19.04	16.76	17.85	16.65	15.86
5	13.096	05 00 45.45816	+17 46 27.5700	1077-0074250	075.189409	+17.774325	121	87	1978.2	2	-10	5	17.07	15.46	16.34	15.48	14.65
6	16.187	05 00 45.15480	+17 46 27.7716	1077-0074245	075.188145	+17.774381	999	371	1982.1	202	94	3	20.52		20.83		15.00
7	23.471	05 00 45.33600	+17 45 55.5912	1077-0074248	075.188900	+17.765442	100	104	1978.2	4	-16	5	20.63	17.84	19.83	17.85	16.81
8	24.303	05 00 44.40216	+17 46 25.2624	1077-0074237	075.185009	+17.773684	113	70	1978.2	0	0	5	20.08	18.46	19.35	18.48	17.96
9	24.606	05 00 45.21480	+17 45 55.1628	1077-0074246	075.188395	+17.765323	999	585	1976.3	0	0	2		19.45			17.00
10	25.975	05 00 47.78088	+17 46 11.5716	1077-0074269	075.199087	+17.769881	352	774	1995.2	0	0	2			20.41		16.44
11	29.959	05 00 48.08544	+17 46 20.6328	1077-0074271	075.200356	+17.772398	999	229	1993.2	0	0	2				19.34	18.54
12	29.966	05 00 48.07272	+17 46 12.1332	1077-0074270	075.200303	+17.770037	59	105	1978.2	0	0	5	19.22	16.99	18.31	17.06	16.33

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20More%20recent%20versions%20available:%20UCAC3%20%28I/315%29%20and%20UCAC4%20%28I/322%29;%20see%20also%20the%20UCAC%20home%20page%20at%20http://ad.usno.navy.mil/ucac/%3cP%3e%0a

>	\BegDIVclass='sort-down ' </A>
dec Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	2UCAC	RAJ2000 deg	e_ mas	DEJ2000 deg	e_ mas	UCmag mag	No	Nc	pmRA mas/yr	pmDE mas/yr	2Mkey	Jmag mag	Kmag mag
1	12.965	05 00 45.469272	+17 46 27.52428	38022584	075.1894553	32	+17.7743123	47	15.47	3	2	7.3	-8.0	1252608461	13.946	13.422

%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	0.540	05 00 45.968664	+17 46 17.25996	1077-0074960	..	075.1915361	+17.7714611	B	0.0	0.0	0.0	0.0	20.600	B			19.750	B
2	5.319	05 00 45.643992	+17 46 18.44004	1077-0074958	..	075.1901833	+17.7717889	B	0.0	0.0	0.0	0.0	20.660	B
3	11.285	05 00 45.546672	+17 46 07.83012	1077-0074956	..	075.1897778	+17.7688417	B	0.0	0.0	0.0	0.0	20.850	B			19.250	B
4	12.565	05 00 46.735992	+17 46 23.99016	1077-0074966	YM	075.1947333	+17.7733306	B	2.0	1.0	-6.0	3.0	17.520	Y	16.420	Y	16.650	B	14.646	13.980	13.875
5	12.965	05 00 45.469272	+17 46 27.52392	1077-0074955	YM	075.1894553	+17.7743122	C	7.3	6.4	-8.0	6.6	15.770	Y	15.130	Y	15.480	B	13.946	13.572	13.422
6	16.188	05 00 45.154656	+17 46 27.77016	1077-0074950	..	075.1881444	+17.7743806	B	202.0	62.0	94.0	14.0	20.830	B
[****ClosingBrace(s)Inserted****]
6	16.188	05 00 45.154656	+17 46 27.77016	1077-0074950	..	075.1881444	+17.7743806	B	202.0	62.0	94.0	14.0	20.830	B

%22>\Ahref='VizieR-5?-ref=VIZ66396d492d5f3c&-out.add=.&-source=I/297/out&NOMAD1===1077-0074953' class='full'723.47205 00 45.336000+17 45 55.590121077-0074953YM075.1889000+17.7654417B 4.0 3.0 -16.0 3.019.830B17.970Y17.850B15.40414.56414.414   824.30405 00 44.401992+17 46 25.259881077-0074942..075.1850083+17.7736833B 0.0 0.0 0.0 0.019.350B    18.480B         924.60905 00 45.214656+17 45 55.159921077-0074951..075.1883944+17.7653222B 0.0 0.0 0.0 0.0        19.450e         1025.97205 00 47.780664+17 46 11.570161077-0074974..075.1990861+17.7698806B 0.0 0.0 0.0 0.020.410B                 1129.95805 00 48.085344+17 46 20.629921077-0074976..075.2003556+17.7723972B 0.0 0.0 0.0 0.0        19.340B         1229.96605 00 48.072672+17 46 12.129961077-0074975YM075.2003028+17.7700361B 0.0 0.0 0.0 0.017.830Y17.240Y17.060B15.29414.69814.532   %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	PM2000	RAJ2000 "h:m:s"	DEJ2000 "d:m:s"	pmRA mas/yr	pmDE mas/yr	Vmag mag	EpRA yr	EpDE yr	2MASS	TYC1	TYC2	TYC3
1	13.069	05 00 45.448142	+17 46 27.30177	204846	05 00 45.4507	+17 46 27.457	-3.6	-15.1	15.530	1989.72	1989.06	05004546+1746275

%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-30/%2b50deg%3cP%3e%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	CMC14	f_	RAICRS deg	DEICRS deg	r'mag mag	Nt	Jmag mag	Hmag mag	Ksmag mag
1	12.884	05 00 45.47016	+17 46 27.4332	050045.4+174627		075.189459	+17.774287	15.587	2	13.946	13.572	13.422
2	12.897	05 00 46.77144	+17 46 23.8152	050046.7+174623		075.194881	+17.773282	16.889	2	14.646	13.981	13.875

%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%22>