VizieR

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VizieR

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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.

I/252/out The USNO-A2.0 Catalogue (Monet+ 1998)

The Full Catalogue (526280881 rows) (Note)
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USNO-A2.0

RAJ2000
deg
DEJ2000
deg
ACTflag

Mflag

Bmag
mag
Rmag
mag
Epoch
yr
123.82221 53 52.01472+37 00 22.89241200-18666207328.466728+37.006359    18.417.11953.685

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.

I/271/out The GSC 2.2 Catalogue (STScI, 2001)

The Full GSC2.2.1 Catalogue (455851237 objects) (455851237 rows)
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GSC2.2

RA(ICRS)
deg
DE(ICRS)
deg
Epoch
yr
Rmag
mag
e_
mag
Bjmag
mag
e_
mag
Class

a
pix
e

123.90621 53 52.02048+37 00 22.4964N032220144017328.466752+37.0062491992.66517.02 0.3818.13 0.393 4.09 0.33

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.

I/284/out The USNO-B1.0 Catalog (Monet+ 2003)
The Whole-Sky USNO-B1.0 Catalog of 1,045,913,669 sources (1045175762 rows)
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_r
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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 5.24621 53 53.51808+37 00 34.80121270-0569877328.472992+37.009667 56 671979.7 34 183  18.9820.32  16.66
2 6.02321 53 53.43072+37 00 34.63201270-0569876328.472628+37.009620 483281982.4 0 04  18.9719.7718.4317.85
314.20821 53 54.53952+37 00 43.30081270-0569888328.477248+37.0120282632451990.3 0 03    20.8919.8218.89
422.75321 53 53.69616+37 00 54.27001270-0569879328.473734+37.0150751313741990.1 0 02    20.8220.11  
523.88221 53 52.00872+37 00 22.91041270-0569861328.466703+37.006364 84 491976.6 0 0518.2416.8917.5316.8416.66
627.02021 53 55.72080+37 00 46.98001270-0569894328.482170+37.013050 35 51991.7 0 02      19.4218.15
727.30721 53 55.77000+37 00 46.62001270-0569895328.482375+37.012950233 571991.9 0 03    20.7219.5018.77
827.63321 53 51.62472+37 00 25.04161270-0569854328.465103+37.0069569999991981.7 0 04  19.3420.8416.6318.43

Note: The Naval Observatory Merged Astrometric Dataset (NOMAD) contains astrometric and photometric data for over 1 billion stars derived from the Hipparcos (I/239), Tycho-2 (I/259), UCAC2 (I/289), and USNO-B1.0 (I/284) catalogs for astrometry and optical photometry, supplemented by 2MASS (II/246) near-infrared photometry.
An efficient remote query program findnomad1 is available in the cdsclient package, for Unix/Linux platforms

I/297/out NOMAD Catalog (Zacharias+ 2005)
The NOMAD-1 Catalog (1117612732 rows)
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_r
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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 5.24621 53 53.518008+37 00 34.800121270-0594049..328.4729917+37.0096667B 34.0 2.0 18.0 2.020.320B    18.980e        
2 6.02321 53 53.430672+37 00 34.629841270-0594048..328.4726278+37.0096194B 0.0 0.0 0.0 0.019.770B    18.430B        
314.20721 53 54.539328+37 00 43.300081270-0594060..328.4772472+37.0120278B 0.0 0.0 0.0 0.020.890B    19.820B        
422.75321 53 53.695992+37 00 54.270001270-0594051..328.4737333+37.0150750B 0.0 0.0 0.0 0.020.820B    20.110B        
523.88321 53 52.008672+37 00 22.910041270-0594033YM328.4667028