The 3 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.

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	4.725	15 05 28.23408	+44 57 14.4432	1275-08585077	226.367642	+44.954012			17.9	17.8	1953.201

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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	2.814	15 05 28.05816	+44 57 14.0328	EO1368-0237224	226.366909	+44.953898	17.79		2	15.40	11.2	0.45	21.58	L	0			3.79	*
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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	4.762	15 05 28.23120	+44 57 14.7096	N133133215176	226.367630	+44.954086	1994.428	17.41	0.38	17.01	0.43	3	6.73	0.55

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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	1.403	15 05 27.92472	+44 57 13.8600	1349-0254783	226.366353	+44.953850	248	171	1967.6	0	0	3	19.90	19.33		19.54
2	3.059	15 05 28.08480	+44 57 13.8600	1349-0254784	226.367020	+44.953850	622	189	1954.2	0	0	2	19.10	18.11
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%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%203.059&%3cFONT%20COLOR=%27#CD5B45%27>15%2005%2028.08480&%3cFONT%20COLOR=%27#CD5B45%27>%2b44%2057%2013.8600&1349-0254784&226.367020&%2b44.953850&622&189&1954.2&%20%20%20%20%200&%20%20%20%20%200&2&19.10&18.11&%20&%20&%20%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ6638765f31a8ae&-out.add=.&-source=I/284/out&USNO-B1.0===1349-0254785&-out.orig=o' class='full'3 3.64015 05 28.12008+44 57 14.70241349-0254785226.367167+44.9540841204111968.6 -12 4318.2517.64    17.84 4 4.87015 05 28.23600+44 57 14.91121349-0254787226.367650+44.9541422405441954.2 0 0218.4417.52       5 5.58615 05 28.30200+44 57 15.07321349-0254788226.367925+44.9541875271721974.2 0 0418.0519.1216.8917.40   %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	1.402	15 05 27.924672	+44 57 13.86000	1349-0258396	Y.	226.3663528	+44.9538500	B	0.0	0.0	0.0	0.0	18.350	o			19.540	B
2	3.057	15 05 28.084656	+44 57 13.86000	1349-0258397	..	226.3670194	+44.9538500	B	0.0	0.0	0.0	0.0	19.100	o			18.110	e
3	3.638	15 05 28.120008	+44 57 14.69988	1349-0258398	..	226.3671667	+44.9540833	B	-12.0	3.0	4.0	10.0	18.250	o			17.640	e
4	4.869	15 05 28.236000	+44 57 14.91012	1349-0258400	..	226.3676500	+44.9541417	B	0.0	0.0	0.0	0.0	18.440	o			17.520	e
5	5.585	15 05 28.302000	+44 57 15.06996	1349-0258401	..	226.3679250	+44.9541861	B	0.0	0.0	0.0	0.0	16.890	B			17.400	B

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%3cEM%3e%20%3cFONT%20COLOR=%27#CD5B45%27>Full

%22> _r
arcsec _RAJ2000
"h:m:s" _DEJ2000
"d:m:s"GSC2.3

RAJ2000
degDEJ2000
degEpoch
yrFmag
magjmag
magVmag
magNmag
magClass

a
pixe

1 4.76315 05 28.23120+44 57 14.7132N67Y015176226.367630+44.9540871994.42817.4117.0118.9417.283 6.73 0.55 %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	1.283	15 05 27.91872	+44 57 13.6368	226.366328	+44.953788	-7.8	-3.1			19.90		19.33	19.54		3	0
2	3.560	15 05 28.11960	+44 57 14.4756	226.367165	+44.954021	-20.4	0.2			18.25		17.64		17.84	3	0
3	4.758	15 05 28.22784	+44 57 14.8140	226.367616	+44.954115	-26.2	-6.0			18.05	16.89	19.12	17.40		4	0

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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 [****ClosingBrace(s)Inserted****]
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magRF

%20

%22>%5cFONT SIZE=-1mage_
mag

magG
mag

e_
mag

magGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 1.28315 05 27.91872+44 57 13.6370226.366328+44.953788 0.133 0.13319.900 0.40019.540 0.40019.623 0.40019.266 0.5001967.62001967.6200 -7.8 7.0 -3.1 7.0 2 4.15215 05 28.17965+44 57 14.3931226.367415+44.953998 0.060 0.05318.250 0.40017.640 0.40018.218 0.08317.514 0.1132003.40002003.4000 -20.4 6.5 0.2 6.5 3 4.75815 05 28.22788+44 57 14.8141226.367616+44.954115 0.115 0.11517.014 0.30017.408 0.30017.273 0.40017.499 0.5001974.29001974.2900 -26.2 5.7 -6.0 5.7 %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"	RAICRS deg	e_ mas	DEICRS deg	e_ mas	ID	Type	pmRA mas/yr	e_ (...)	pmDE mas/yr	e_ (...)	Nobs	Dt yr	Rmag mag	Bmag mag	Nmag mag	Vmag mag	Jmag mag	Hmag mag	Kmag mag
1	4.282	15 05 28.190002	+44 57 14.48989	226.3674583	365.00	+44.9540250	130.00	57214+0015176	4	-5.4	11.8	-0.2	4.2	7	44.208	17.408	17.014	17.280	18.935

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