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	0.588	11 21 21.71136	+35 15 58.7124	1200-06701846	170.340464	+35.266309			17.4	14.5	1953.184
2	5.708	11 21 21.49536	+35 16 04.4220	1200-06701835	170.339564	+35.267895			18.9	17.7	1953.184

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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	0.316	11 21 21.67872	+35 15 58.9212	EO0695-0110989	170.340328	+35.266367	14.03		1	49.65	22.8	0.25	17.25		2	24.44	19.9	3.22
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.316&%3cFONT%20COLOR=%27#CD5B45%27>11%2021%2021.67872&%3cFONT%20COLOR=%27#CD5B45%27>%2b35%2015%2058.9212&EO0695-0110989&170.340328&%2b35.266367&14.03&%20&%201&%20%2049.65&%20%2022.8&%200.25&17.25&%20&%202&%20%2024.44&%20%2019.9&%20%203.22&%20%3cBR%3e">\EndTABLESORT

Note: The construction of the GSC-II is still in progress: this version has no proper motions, and the magnitude limits are 18.5 in F (red) and 19.5 in J (blue). The data are copyrighted, check the data use Policy.

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	0.139	11 21 21.69792	+35 15 59.1768	N20101122142	170.340408	+35.266438	1992.094	13.72	0.29	15.63	0.28	3	8.70	0.29

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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	0.396	11 21 21.71400	+35 15 59.0004	1252-0188512	170.340475	+35.266389	15	246	1979.1	4	8	5	17.63	14.66	15.25	14.16	15.15
2	3.703	11 21 21.98544	+35 15 59.8212	1252-0188517	170.341606	+35.266617	644	999	1973.8	0	0	4	20.25	19.48	17.87	18.70
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%203.703&%3cFONT%20COLOR=%27#CD5B45%27>11%2021%2021.98544&%3cFONT%20COLOR=%27#CD5B45%27>%2b35%2015%2059.8212&1252-0188517&170.341606&%2b35.266617&644&999&1973.8&%20%20%20%20%200&%20%20%20%20%200&4&20.25&19.48&17.87&18.70&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6622ebe61bc8cc&-out.add=.&-source=I/284/out&USNO-B1.0===1252-0188509&-out.orig=o' class='full'3 3.92511 21 21.50616+35 16 02.46001252-0188509170.339609+35.2673507677061980.7 0 03  16.8716.3417.98   4 5.26311 21 22.03680+35 15 56.16001252-0188518170.341820+35.2656008889991966.1 158 -140319.4318.14  18.23   5 5.41611 21 21.44016+35 16 03.71281252-0188508170.339334+35.2676981321751981.7 28 -24319.90    18.0118.07 6 5.48811 21 21.54336+35 15 54.02161252-0188510170.339764+35.2650069029991966.1 36 -202319.6017.73  19.12   7 5.56611 21 21.92136+35 15 54.45001252-0188516170.341339+35.2651251622941985.6 -16 424  18.6219.5018.4216.88 8 5.88611 21 21.72072+35 16 05.09161252-0188513170.340503+35.2680815025001976.6 0 0220.51      17.87 9 6.38611 21 21.91416+35 15 53.47081252-0188515170.341309+35.2648535245261980.7 0 03  18.4419.3519.23   10 6.51011 21 21.57816+35 16 05.59201252-0188511170.339909+35.268220999 421966.1 2 22319.6818.09  18.52   11 6.62611 21 22.12152+35 15 55.27081252-0188519170.342173+35.2653533269991972.6 0 0220.49    19.21   12 7.46211 21 21.72408+35 15 51.77161252-0188514170.340517+35.2643811758501972.6 0 0219.63    20.09   %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	0.396	11 21 21.714000	+35 15 59.00004	1252-0192844	YM	170.3404750	+35.2663889	B	4.0	0.0	8.0	8.0	18.350	Y	16.920	Y	14.160	B	15.782	15.108	14.502
2	3.701	11 21 21.985344	+35 15 59.82012	1252-0192849	..	170.3416056	+35.2666167	B	0.0	0.0	0.0	0.0	17.870	B			18.700	B
3	3.927	11 21 21.505992	+35 16 02.46000	1252-0192841	..	170.3396083	+35.2673500	B	0.0	0.0	0.0	0.0	16.340	B			17.980	B
4	5.262	11 21 22.036656	+35 15 56.16000	1252-0192850	..	170.3418194	+35.2656000	B	158.0	23.0	-140.0	63.0	19.430	o			18.230	B
5	5.415	11 21 21.439992	+35 16 03.70992	1252-0192840	..	170.3393333	+35.2676972	B	28.0	4.0	-24.0	6.0	19.900	o			18.010	B
6	5.490	11 21 21.543336	+35 15 54.02016	1252-0192842	..	170.3397639	+35.2650056	B	36.0	23.0	-202.0	57.0	19.600	o			19.120	B
[****ClosingBrace(s)Inserted****]
6	5.490	11 21 21.543336	+35 15 54.02016	1252-0192842	..	170.3397639	+35.2650056	B	36.0	23.0	-202.0	57.0	19.600	o			19.120	B

%22>\Ahref='VizieR-5?-ref=VIZ6622ebe61bc8cc&-out.add=.&-source=I/297/out&NOMAD1===1252-0192848' class='full'7 5.56611 21 21.921336+35 15 54.450001252-0192848..170.3413389+35.2651250B -16.0 6.0 42.0 12.019.500B    18.420B         8 5.88511 21 21.720672+35 16 05.090161252-0192845..170.3405028+35.2680806B 0.0 0.0 0.0 0.020.510o                 9 6.38611 21 21.913992+35 15 53.470081252-0192847..170.3413083+35.2648528B 0.0 0.0 0.0 0.019.350B    19.230B         10 6.50911 21 21.577992+35 16 05.589841252-0192843..170.3399083+35.2682194B 2.0 41.0 22.0 1.019.680o    18.520B         11 6.62411 21 22.121328+35 15 55.270081252-0192851..170.3421722+35.2653528B 0.0 0.0 0.0 0.020.490o    19.210B         12 7.46411 21 21.724008+35 15 51.770161252-0192846..170.3405167+35.2643806B 0.0 0.0 0.0 0.019.630o    20.090B         %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	0.141	11 21 21.69816	+35 15 59.1804	N6JA002142	170.340409	+35.266439	1992.094	13.72	15.63	15.60	13.76	3	8.70	0.29

%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	0.692	11 21 21.71760	+35 15 58.6368	170.340490	+35.266288	1.4	-1.0	15.783	14.502	17.63	15.25	14.66	14.16	15.15	6	0
[****ClosingBrace(s)Inserted****]
">

%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%200.692&%3cFONT%20COLOR=%27#CD5B45%27>11%2021%2021.71760&%3cFONT%20COLOR=%27#CD5B45%27>%2b35%2015%2058.6368&170.340490&%2b35.266288&%20%20%20%20%201.4&%20%20%20%20-1.0&15.783&14.502&17.63&15.25&14.66&14.16&15.15&%206&%200%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6622ebe61bc8cc&-out.add=.&-source=I/317/sample&PPMXL===4282055118808159796' class='full'2 2.84011 21 21.91896+35 15 59.1912170.341329+35.266442 -14.3 -75.0    20.2517.8719.4818.70   4 1 3 4.32511 21 21.47952+35 16 02.7192170.339498+35.267422 3.7 8.1      16.3416.8717.98   3 0 4 5.33311 21 21.43176+35 16 03.5400170.339299+35.267650 26.7 -24.1    19.90    18.0118.07 3 0 5 5.51511 21 22.03800+35 15 55.7640170.341825+35.265490 164.4 -159.7    19.43  18.1418.23   3 1 6 5.52911 21 22.08696+35 15 56.6532170.342029+35.265737 -8.3 33.3    20.49    19.21   2 0 7 5.59911 21 21.91152+35 15 54.3420170.341298+35.265095 -18.0 43.6      19.5018.6218.4216.88 4 0 8 5.63211 21 21.71736+35 16 04.8396170.340489+35.268011 10.4 -12.3    20.51      17.87 2 0 9 5.84911 21 21.54480+35 15 53.6364170.339770+35.264899 42.5 -220.2    19.60  17.7319.12   3 1 10 6.03911 21 21.87576+35 15 53.6400170.341149+35.264900 -10.4 8.3      19.3518.4419.23   3 0 11 6.24811 21 21.58296+35 16 05.3364170.339929+35.268149 13.8 20.1    19.68  18.0918.52   3 0 12 7.88611 21 21.72408+35 15 51.3468170.340517+35.264263 4.3 -23.5    19.63    20.09   2 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	0.863	11 21 21.71230	+35 15 58.4142	170.340468	+35.266226	0.006	0.006	15.632	0.300	13.718	0.300	16.437	0.080	15.225	0.110	2004.2800	2004.2800	1.4	4.0	-1.0	4.0
2	2.839	11 21 21.91893	+35 15 59.1910	170.341329	+35.266442	0.115	0.133	17.870	0.400	18.700	0.400	18.436	0.400	19.001	0.500	1973.8900	1973.8900	-14.3	5.5	-75.0	6.4
3	4.325	11 21 21.47953	+35 16 02.7186	170.339498	+35.267422	0.133	0.133	16.340	0.400	17.980	0.400	17.525	0.400	18.704	0.500	1980.8000	1980.8000	3.7	6.8	8.1	6.8
4	5.514	11 21 22.03800	+35 15 55.7642	170.341825	+35.265490	0.133	0.133	19.430	0.400	18.230	0.400	18.462	0.400	17.496	0.500	1966.1500	1966.1500	164.4	7.2	-159.7	7.2
5	5.529	11 21 22.08693	+35 15 56.6530	170.342029	+35.265737	0.163	0.163	20.490	0.400	19.210	0.400	19.447	0.400	18.427	0.500	1972.6400	1972.6400	-8.3	8.4	33.3	8.4
6	5.599	11 21 21.91154	+35 15 54.3420	170.341298	+35.265095	0.115	0.115	19.500	0.400	18.420	0.400	18.641	0.400	17.757	0.500	1985.6000	1985.6000	-18.0	6.1	43.6	6.1
7	6.039	11 21 21.87572	+35 15 53.6399	170.341149	+35.264900	0.133	0.133	19.350	0.400	19.230	0.400	19.249	0.400	19.074	0.500	1980.8000	1980.8000	-10.4	6.8	8.3	6.8
8	6.248	11 21 21.58293	+35 16 05.3360	170.339929	+35.268149	0.133	0.133	19.680	0.400	18.520	0.400	18.749	0.400	17.810	0.500	1966.1500	1966.1500	13.8	7.2	20.1	7.2
9	7.886	11 21 21.72403	+35 15 51.3474	170.340517	+35.264263	0.163	0.163	19.630	0.400	20.090	0.400	19.936	0.400	20.213	0.500	1972.6400	1972.6400	4.3	8.4	-23.5	8.4
[****ClosingBrace(s)Inserted****]
9	7.886	11 21 21.72403	+35 15 51.3474	170.340517	+35.264263	0.163	0.163	19.630	0.400	20.090	0.400	19.936	0.400	20.213	0.500	1972.6400	1972.6400	4.3	8.4	-23.5	8.4

%22>\EndTABLESORT

Note:

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	0.820	11 21 21.717606	+35 15 58.53029	627-186916	170.3404447	+35.2662322	2013.882	17.058	0.030	-9.6	-6.8	15.783	15.108	14.502

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