VizieR

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The 3 columns in color are computed by VizieR, and are not part of the original data.

Note: USNO-A1.0 contains 488,006,860 sources, and was compiled from the blue/red overlaps of the detection lists generated from scans of POSS-I O and E plates (>=-30°) and SRC-J and ESO-R plates (<=-35°). USNO-A1.0 was created by Dave Monet () and collaborators at Flagstaff Station, U.S. Naval Observatory; it is superseded by the new PMM-USNO-A2.0 version.
The VizieR search engine uses an on-line compressed version (3.4Gbytes) which was generated at CDS.

I/243/out The PMM USNO-A1.0 Catalogue (Monet 1997)
ReadMe+ftp

metaI/243/out

The Full Catalogue (488006860 rows) (Note)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	USNO-A1.0	RA_ICRS deg	DE_ICRS deg	GSCflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	9.431	12 47 24.34874	-24 37 54.2098	0600-08912942	191.851453	-24.631725			19.8	19.3	1954.112

Note:

II/385/vst_atlas4 VLT Survey Telescope ATLAS DR4 (Shanks+, 2025)
ReadMe+ftp
2015MNRAS.451.4238S
metaII/385/vst_atlas4

VST-ATLAS DR4 catalog (original column names in green) (155778147 rows)

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	RAJ2000 deg	DEJ2000 deg	Name	Mclass	Uap3 mag	e_ mag	Gap3 mag	e_ mag	Rap3 mag	e_ mag	Iap3 mag	e_ mag	Zap3 mag	e_ mag
1	9.762	12 47 24.41623871318	-24 37 54.6881838496	191.851734327972	-24.631857828847	vst-atlas J124724.42-243754.69	1							21.0168	6.95849e-02

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