VizieR

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The 1 column 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 The USNO-A2.0 Catalogue (Monet+ 1998)
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The Full Catalogue (526280881 rows) (Note)

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Full	_r arcsec	USNO-A2.0	RAJ2000 deg	DEJ2000 deg	ACTflag	Mflag	Bmag mag	Rmag mag	Epoch yr
1	0.825	0300-08193860	148.249325	-56.244973			12.1	11.9	1980.191

Note: The Guide Star Catalog has been constructed to support the operational need of the Hubble Space Telescope. It contains over 25 million positions for about 19 million objects, of which more than 15 million are classified as stars. The version 1.2 is a new astrometric reduction which results in absolute position errors about 0.3-0.4 arcsec. (see GSC pages at URL http://www-gsss.stsci.edu/gsc/gsc.html)

I/254/out The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)
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2001AJ....121.1752M
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The Full Catalogue (25241730 positions) (25241730 rows)

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Full	_r arcsec	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Plate	Epoch yr
1	0.03	0860200639	148.24892	-56.24490	0.2	12.50	0.31	6	0	0612	1987.190

Note: The GSC-ACT (or GSC1.3) is a recalibration of the GSC1.1, the catalogue constructed to support the operational need of the Hubble Space Telescope, with the ACT, the combination of the Astrographic Catalogue and the Tycho catalogue derived from the Hipparcos mission; see http://www.projectpluto.com/gsc_act.htm for more details about this recalibration.

I/255/out The HST Guide Star Catalog, Version GSC-ACT (Lasker+ 1996-99)
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The GSC-ACT Full Catalogue (25241730 positions) (25241730 rows)

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Full	_r arcsec	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Epoch yr
1	0.12	0860200639	148.24897	-56.24488	0.2	12.51	0.31	6	0	1987.190

I/259/tyc2

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

Full	_r arcsec	sourceID	RAJ2000 deg	DEJ2000 deg	VPHASDR2	clean	umag mag	e_umag mag	gmag mag	e_gmag mag	r2mag mag	e_r2mag mag	Hamag mag	e_ mag	rmag mag	e_rmag mag	imag mag	e_imag mag
1	0.05	1590b-3-1772	148.24891	-56.24490	VPHASDR2 J095259.7-561441.6	0	12.35	0.00	12.50	0.00	12.30	0.00	12.25	0.00	12.32	0.00	12.19	0.00
2	0.08	1590a-6-1531	148.24889	-56.24491	VPHASDR2 J095259.7-561441.7	1	12.37	0.00	12.49	0.00	12.36	0.00	12.29	0.00	12.38	0.00	12.20	0.00

Full	_r arcsec	Pop	Gmag mag	GBmag mag	GRmag mag	Gsmag mag	RAICRS deg	DEICRS deg	r pc	pmRA mas/yr	pmDE mas/yr	RV km/s	Mass Sun	[Fe/H] [Sun]	Teff K	logg [cm/s2]
1	1.928	2	40.000	40.000	38.785	39.027	148.2493404470	-56.2453909185	3215.6	-9.137	11.001	21.4	0.0026	0.15	2706	4.554
2	1.928	2	19.796	20.643	18.841	18.411	148.2493404275	-56.2453909331	3215.6	-9.137	11.001	17.9	0.7880	0.15	5794	4.554
3	1.928	2	19.796	20.643	18.841	18.411	148.2493404276	-56.2453909331	3215.6	-9.137	11.001	17.9	0.7919	0.15	0	0.000
4	1.928	2	40.000	40.000	38.785	39.027	148.2493404632	-56.2453909647	3215.6	-9.137	11.001	39.5	0.0013	0.15	5310	4.554