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	3.762	05 03 56.23944	-27 01 43.3020	0600-02124261	075.984331	-27.028695			15.2	15.9	1985.455
2	9.464	05 03 56.72808	-27 01 46.3728	0600-02124331	075.986367	-27.029548			20.2	17.8	1985.455

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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	3.746	05 03 56.23968	-27 01 43.3308	S022222112048	075.984332	-27.028703	1997.847	15.28	0.42			3	7.10	0.25
2	3.803	05 03 56.24616	-27 01 43.3488	S02222215788	075.984359	-27.028708	1978.774			15.34	0.33	3	4.29	0.31
3	3.834	05 03 56.23272	-27 01 43.0896	S022222117577	075.984303	-27.028636	1994.784	15.48	0.42			3	6.81	0.35

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">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.

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	3.623	05 03 56.29200	-27 01 45.9732	0629-0078588	075.984550	-27.029437	999	999	1974.2	0	0	4	20.10	15.68	20.42	20.06
2	3.925	05 03 56.24400	-27 01 43.1220	0629-0078586	075.984350	-27.028645	115	40	1979.7	0	0	5	18.95	14.82	15.46	14.49	15.25
3	4.140	05 03 55.97616	-27 01 41.5920	0629-0078583	075.983234	-27.028220	365	999	1950.0	0	0	2	20.12				18.31
4	7.459	05 03 56.25000	-27 01 52.4928	0629-0078587	075.984375	-27.031248	999	195	1977.9	0	0	2		18.35		19.95
5	8.957	05 03 56.60280	-27 01 41.2212	0629-0078590	075.985845	-27.028117	692	999	1979.6	0	0	3	19.91		19.82	19.07
6	9.210	05 03 56.71080	-27 01 45.4800	0629-0078591	075.986295	-27.029300	558	345	1985.1	0	0	4		19.58	20.97	19.83	18.21

%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	[****ClosingBrace(s)Inserted****]
">

mas/yr&%">\BegDIVclass='sort-down ' </A>dece_
(...)pmDE
mas/yr

e_
(...)Bmag
magr_

Vmag
magr_

Rmag
magr_

Jmag
magHmag
magKmag
magR

1 3.62305 03 56.292000-27 01 45.969960629-0078941..075.9845500-27.0294361B 0.0 0.0 0.0 0.020.420B    20.060B         2 3.92605 03 56.244000-27 01 43.119840629-0078939YM075.9843500-27.0286444B 0.0 0.0 0.0 0.018.230Y17.440Y14.490B15.95515.51215.217   3 4.14205 03 55.975992-27 01 41.589840629-0078936..075.9832333-27.0282194B 0.0 0.0 0.0 0.020.120o                 4 7.45605 03 56.250000-27 01 52.489920629-0078940..075.9843750-27.0312472B 0.0 0.0 0.0 0.0        19.950B         5 8.95605 03 56.602656-27 01 41.220120629-0078943..075.9858444-27.0281167B 0.0 0.0 0.0 0.019.820B    19.070B         6 9.20805 03 56.710656-27 01 45.480000629-0078944..075.9862944-27.0293000B 0.0 0.0 0.0 0.020.970B    19.830B         %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20This%20version%20of%20the%20%0a%3cB%3eGSC-II%0ahas%20no%20proper%20motions,%20but%20the%20limits%20on%20brightness%20which%20existed%20on%0a%20%28F<18.5,%20B_j<19.5%29%20were%20removed.%0a%25The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%0a%25the%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a

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	3.753	05 03 56.23992	-27 01 43.3236	S23T005788	075.984333	-27.028701	1997.847	15.28	15.59		15.55	3	7.10	0.25

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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	1.803	05 03 56.15184	-27 01 46.1604	075.983966	-27.029489	-20.7	-9.6			20.10	20.42	15.68	20.06		4	0
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%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%201.803&%3cFONT%20COLOR=%27#CD5B45%27>05%2003%2056.15184&%3cFONT%20COLOR=%27#CD5B45%27>-27%2001%2046.1604&075.983966&-27.029489&%20%20%20-20.7&%20%20%20%20-9.6&%20&%20&20.10&20.42&15.68&20.06&%20&%204&%200%3cBR%3e">\Ahref='VizieR-5?-ref=VIZ663db453e909a&-out.add=.&-source=I/317/sample&PPMXL===2443775251978624526' class='full'2 4.10605 03 55.96704-27 01 41.6460075.983196-27.028235 2.6 -22.3    20.12      18.31 2 0 3 4.15005 03 56.26608-27 01 43.1256075.984442-27.028646 10.4 6.715.95615.21718.9515.4614.8214.4915.25 6 0 4 7.04405 03 56.10072-27 01 52.6512075.983753-27.031292 -40.5 -5.6        18.3519.95   2 0 5 8.38905 03 56.57784-27 01 41.7936075.985741-27.028276 0.6 -53.6    19.9119.82  19.07   3 0 6 9.48605 03 56.73096-27 01 45.2820075.986379-27.029245 38.0 10.7      20.9719.5819.8318.21 4 0 %0a%0a

Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	ID	RAICRS deg	DEICRS deg	pmRAp mas/yr	pmDEp mas/yr	pmRAx mas/yr	pmDEx mas/yr	Fmag mag	Bjmag mag	Vmag mag	Nmag mag	Jmag mag	e_ mag	Hmag mag	e_ mag	Kmag mag	e_ mag	2Mkey	Bmag mag	Rmag mag	Fld	dT yr	fg	fs	M
1	4.414	05 03 56.28456	-27 01 43.0140	XPM 125-0048630	075.984519	-27.028615	22.75	20.59	21.01	20.86	15.280	15.587		15.552	15.956	0.122	15.512	0.160	15.217	0.197	208094544	15.2	15.9	486	13.533021	0	0	M

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Full	_r arcsec	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	[****ClosingBrace(s)Inserted****]
">

%22d:m:s%22&%">\BegDIVclass='sort-down ' </A>decRAJ2000
degDEJ2000
deg

e_RAJ2000
(...)

e_DEJ2000
arcsec

magBJ
mag

e_
mag

magRF
mag

e_
mag

magG
mag

e_
mag

magGrvs
mag

e_
mag

alphaEpoch
yr

deltaEpoch
yr

pmRA
mas/yr

e_
(...)

pmDE
mas/yr

e_
(...)

1 1.80305 03 56.15187-27 01 46.1601075.983966-27.029489 0.133 0.13320.420 0.40020.060 0.40020.144 0.40019.785 0.5001975.43001975.4300 -20.7 7.1 -9.6 8.1 2 4.15005 03 56.26608-27 01 43.1260075.984442-27.028646 0.081 0.08115.587 0.30015.280 0.30015.350 0.40015.032 0.5001986.92001986.9200 10.4 4.6 6.7 4.6 3 8.39005 03 56.57787-27 01 41.7939075.985741-27.028276 0.133 0.13319.820 0.40019.070 0.40019.240 0.40018.593 0.5001979.61001979.6100 0.6 8.1 -53.6 8.1 4 9.48605 03 56.73094-27 01 45.2821075.986379-27.029245 0.115 0.11520.970 0.40019.830 0.40020.057 0.40019.132 0.5001985.15001985.1500 38.0 6.7 10.7 6.7 %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	3.897	05 03 56.243734	-27 01 43.16098	075.9843489	54.00	-27.0286558	99.00	35497+0005788	4	5.5	2.1	-4.4	3.8	9	44.005	15.280	15.587	15.552		15.956	15.512	15.217

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