VizieR

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The 7 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.

I/252/out
Post annotation The USNO-A2.0 Catalogue (Monet+ 1998)
ReadMe+ftp

metaI/252/out

The Full Catalogue (526280881 rows) (Note)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	_RAB1950 "h:m:s"	_DEB1950 "d:m:s"	_Glon deg	_Glat deg	USNO-A2.0	RAJ2000 deg	DEJ2000 deg	ACTflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	0.267	00 29 38.38944	+00 24 37.5732	00 27 04.58127	+00 08 03.1709	111.27422408	-61.96692302	0900-00115232	007.409956	+00.410437			11.4	11.6	1952.705

Note: The USNO-B Catalog presents positions, proper motions, magnitudes un blue, red and infrared, as well as star/galaxy estimators for 1,045,175,762 objects derived from 3,648,832,040 separate observations. The data were taken from scans of 7,435 Schmidt plates taken from various sky surveys during the last 50 years.
USNO-B1.0 catalog was created by Dave Monet and collaborators at http://www.nofs.navy.mil/data/fchpix/
Note that the star/galaxy estimators may be mixed up in dense regions.

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Post annotation The USNO-B1.0 Catalog (Monet+ 2003)
ReadMe+ftp
2003AJ....125..984M
metaI/284/out

The Whole-Sky USNO-B1.0 Catalog of 1,045,913,669 sources (1045175762 rows)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	_RAB1950 "h:m:s"	_DEB1950 "d:m:s"	_Glon deg	_Glat deg	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	0.102	00 29 38.38800	+00 24 37.3932	00 27 04.58784	+00 08 02.7757	111.27419239	-61.96697112	0904-0005128	007.409950	+00.410387	157	128	1977.4	0	0	5	11.12	11.22	10.17	9.65	12.78
2	0.860	00 29 38.43744	+00 24 37.5912	00 27 04.01800	+00 07 44.7686	111.27464460	-61.96695406	0904-0005129	007.410156	+00.410442	999	999	1971.4	186	364	4	19.83	18.65	10.24	12.78
3	2.492	00 29 38.23536	+00 24 36.1800	00 27 05.54139	+00 08 14.8710	111.27273228	-61.96718825	0904-0005125	007.409314	+00.410050	793	999	1977.6	-332	-266	3	18.60		10.28	10.29

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.

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Post annotation The GSC 2.2 Catalogue (STScI, 2001)
ReadMe+ftp

metaI/271/out

The Full GSC2.2.1 Catalogue (455851237 objects) (455851237 rows)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	_RAB1950 "h:m:s"	_DEB1950 "d:m:s"	_Glon deg	_Glat deg	GSC2.2	RA(ICRS) deg	DE(ICRS) deg	Epoch yr	Rmag mag	e_ mag	Bjmag mag	e_ mag	Class	a pix	e
1	0.452	00 29 38.40768	+00 24 37.0656	00 27 04.59953	+00 08 02.6634	111.27432920	-61.96707539	N320012177	007.410032	+00.410296	1987.642	10.84	0.00	11.43	0.38	3	15.79	0.36

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.

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Post annotation The Guide Star Catalog, Version 2.3.2 (GSC2.3) (STScI, 2006)
ReadMe+ftp
2008AJ....136..735L
metaI/305/out

The Full GSC2.3.2 Catalogue (945592683 objects) (945592683 rows)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	_RAB1950 "h:m:s"	_DEB1950 "d:m:s"	_Glon deg	_Glat deg	GSC2.3	RAJ2000 deg	DEJ2000 deg	Epoch yr	Fmag mag	jmag mag	Vmag mag	Nmag mag	Class	a pix	e
1	0.223	00 29 38.39736	+00 24 37.2708	00 27 04.58920	+00 08 02.8686	111.27426101	-61.96701158	NB2X000077	007.409989	+00.410353	1987.642	10.93	11.43		12.75	3	15.79	0.36

I/353/gsc242
Post annotation

The Guide Star Catalog, Version 2.4.2 (GSC2.4.2) (STScI, 2020)

ReadMe+ftp

2008AJ....136..735L

Guide Star Catalogue, Version 2.4.2 (original column names in green) (3485671481 rows)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	_RAB1950 "h:m:s"	_DEB1950 "d:m:s"	_Glon deg	_Glat deg	GSC2	RA_ICRS deg	DE_ICRS deg	objID	Epoch yr	Class	OMag mag	Bjmag mag	Fpgmag mag	Npgmag mag	umag mag	gmag mag	rmag mag	imag mag	zmag mag	ymag mag	Jmag mag	Hmag mag	Ksmag mag	W1mag mag	W2mag mag	W3mag mag	W4mag mag	FUVmag mag	NUVmag mag	a pix	e pix	PA pix
1	0.070	00 29 38.3863374196	+00 24 37.479321886	00 27 04.6201993055	+00 08 03.582063905	111.2740995437873	-61.9669864549646	NB2X000077	007.40990983000	+00.41036407000	1320012177	2011.714	3	10.975900	11.427200	10.931200	12.754700	16.296	18.815	18.918	18.939	18.274	17.9351	13.835	13.699	13.171	13.841	13.748	10.665	8.147	17.013	16.744	15.791	0.361	116.3
2	0.792	00 29 38.4170400000	+00 24 36.720000000	00 27 04.6169070338	+00 08 02.102762755	111.2743740923924	-61.9671768339048	NB2X016955	007.41007100000	+00.41020000000	1320012116955	2000.615	0											13.507	12.968	12.936
3	2.554	00 29 38.5304208000	+00 24 36.047556000	00 27 04.7303122924	+00 08 01.431337748	111.2752914090246	-61.9674455319458	NB2X061255	007.41054342000	+00.41001321000	1320012161255	2011.625	3									19.548
4	2.653	00 29 38.3841600000	+00 24 34.671600000	00 27 04.5841096366	+00 08 00.054063960	111.2738696118394	-61.9677119191938	NB2X066726	007.40993400000	+00.40963100000	1320012166726	2015.502	3						18.270
5	3.231	00 29 38.1958380720	+00 24 38.925736164	00 27 04.3956216656	+00 08 04.306512410	111.2726795047113	-61.9664083612412	NB2X023462	007.40914932530	+00.41081270449	1320012123462	2001.880	3					22.146	22.130	22.171	22.546	22.832
6	4.261	00 29 38.2203933312	+00 24 33.830521200	00 27 04.4203800930	+00 07 59.211510811	111.2723519837268	-61.9678190185317	NB2X047061	007.40925163888	+00.40939736700	1320012147061	2012.000	3												20.372
7	4.621	00 29 38.6695200000	+00 24 35.629200000	00 27 04.8694252438	+00 08 01.014232572	111.2764600382055	-61.9676640618427	NB2X066532	007.41112300000	+00.40989700000	1320012166532	2014.555	3								17.830

Target Name (resolved by Sesame) or Position:	Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)	Radius Box size