VizieR

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The 5 columns in color are computed by VizieR, and are not part of the original data.

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	Name	RAB1950 "h:m:s"	DEB1950 "d:m:s"	bmag mag	Nfields	Flag1	Flag2	Flag3	_RA.icrs "h:m:s"	_DE.icrs "d:m:s"
1	2.583	18 34 08.53783	+70 57 19.7951	+70.0190	18 34 45.864	+70 54 49.66	16.77	1	0	0	0	18 34 08.538	+70 57 19.79

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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.

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USNO-A2.0

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DEJ2000
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ACTflag

Mflag

Bmag
mag

Rmag
mag

Epoch
yr

1 2.504 18 34 08.64936 +70 57 19.5516 1575-03989291 278.536039 +70.955431 15.6 12.9 1953.671

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	GSC	RAJ2000 deg	DEJ2000 deg	PosErr arcsec	Pmag mag	e_ mag	n_	Class	Epoch yr
1	2.46	18 34 08.6784	+70 57 19.440	0443400851	278.53616	+70.95540	0.3	15.04	0.40	1	3	1983.371

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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	5.849	18 34 09.53544	+70 57 19.6812	EO0801-0300941	278.539731	+70.955467	12.27		2	14.11	54.9	0.49	21.80	L	0			9.53
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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	2.303	18 34 08.63112	+70 57 19.3716	N0101032137	278.535963	+70.955381	1993.612	11.16	0.43	13.48	0.41	3	16.07	0.18

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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	2.559	18 34 08.64000	+70 57 19.6308	1609-0123107	278.536000	+70.955453	54	66	1976.7	0	0	5	15.51	11.18	12.60	10.75	10.76
2	4.698	18 34 07.50816	+70 57 18.1908	1609-0123094	278.531284	+70.955053	999	999	1993.0	0	0	2				17.46	17.17
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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	2.559	18 34 08.640000	+70 57 19.63008	1609-0124880	YM	278.5360000	+70.9554528	B	0.0	0.0	0.0	0.0	16.940	Y	15.050	Y	10.750	B	14.521	13.826	13.211
2	4.699	18 34 07.507992	+70 57 18.19008	1609-0124867	..	278.5312833	+70.9550528	B	0.0	0.0	0.0	0.0					17.460	B
3	6.445	18 34 09.765336	+70 57 17.21016	1609-0124883	..	278.5406889	+70.9547806	B	0.0	0.0	0.0	0.0	20.230	o
4	6.561	18 34 07.264008	+70 57 20.31984	1609-0124862	..	278.5302667	+70.9556444	B	-118.0	118.0	-114.0	32.1					17.550	B
5	7.161	18 34 07.112664	+70 57 14.33016	1609-0124858	..	278.5296361	+70.9539806	B	-384.0	96.0	-122.0	111.0	19.760	B
6	7.938	18 34 07.125336	+70 57 12.66012	1609-0124861	..	278.5296889	+70.9535167	B	0.0	0.0	0.0	0.0	19.300	B			17.650	B
7	7.974	18 34 07.549344	+70 57 10.59984	1609-0124869	..	278.5314556	+70.9529444	B	0.0	0.0	0.0	0.0					17.400	B
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7	7.974	18 34 07.549344	+70 57 10.59984	1609-0124869	..	278.5314556	+70.9529444	B	0.0	0.0	0.0	0.0					17.400	B

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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	2.307	18 34 08.63136	+70 57 19.3752	N0UM000137	278.535964	+70.955382	1993.612	11.16	13.48	13.86	10.73	3	16.07	0.18

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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