VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

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The 3 columns in color are computed by VizieR, and are not part of the original data.
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mag
Flag1
1 7.44115 23 01.67867-01 20 50.29005003 84715 23 01.679-01 20 50.29 39 0.4010.30   0.000
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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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ACTflag
Mflag
Bmag
mag
Rmag
mag
Epoch
yr
1 7.39115 23 02.48016-01 20 57.03000825-08716251230.760334-01.349175    17.315.21955.298
2 8.50615 23 01.66200-01 20 49.14240825-08716146230.756925-01.346984    12.0 9.91955.298
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%3cBR%3e%0a%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%207.79&%3cFONT%20COLOR=%27#CD5B45%27>15%2023%2001.7016&%3cFONT%20COLOR=%27#CD5B45%27>-01%2020%2049.596&0500300847&230.75709&-01.34711&%200.4&10.31&%200.31&%200&3&0175&1979.544%3cBR%3e%0a %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eGSC-ACT%20%3cEM%3e%28or%20%3cB%3eGSC1.3%29%0ais%20a%20recalibration%20of%20the%20%3cB%3e<%25E%20I/220%7cGSC1.1>,%20the%20catalogue%20constructed%20%0ato%20support%20the%20operational%20need%20of%20the%20Hubble%20Space%20Telescope,%0awith%20the%20%3cB%3e<%25E%20I/246%7cACT>,%20the%20combination%20of%20the%20Astrographic%20Catalogue%0aand%20the%20%3cB%3e%3cEM%3eTycho%20catalogue%20derived%20from%20the%20%3cEM%3e<%25E%20I/239%7cHipparcos>%0amission;%20see%20http://www.projectpluto.com/gsc_act.htm%20for%20more%20details%0aabout%20this%20recalibration.%0a%3cP%3e%0a
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1 7.7415 23 01.7016-01 20 49.6680500300847230.75709-01.34713 0.410.33 0.31 031979.544
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1 8.71515 23 01.59722-01 20 49.6281 11020559230.756679 27-01.347107 4114.34-0.138 5.9 -1.04 5.9
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%3cBR%3e%0a%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%209.036&%3cFONT%20COLOR=%27#CD5B45%27>15%2023%2001.60920&%3cFONT%20COLOR=%27#CD5B45%27>-01%2020%2049.0812&S2210310256&230.756705&-01.346967&1994.365&10.19&%20&10.84&%20&3&%2017.15&%200.31%3cBR%3e%0a %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20%3cB%3eUSNO-B%20Catalog%20presents%20positions,%20proper%20motions,%20%0amagnitudes%20un%20blue,%20red%20and%20infrared,%20as%20well%20as%20star/galaxy%20estimators%0afor%201,045,175,762%20objects%20derived%20from%203,648,832,040%20separate%20observations.%0aThe%20data%20were%20taken%20from%20scans%20of%207,435%20Schmidt%20plates%0ataken%20from%20various%20sky%20surveys%20during%20the%20last%2050%20years.%3cBR%3e%0aUSNO-B1.0%20catalog%20was%20created%20by%20Dave%20Monet%20and%20collaborators%0aat%20http://www.nofs.navy.mil/data/fchpix/%20%3cBR%3e%0a%3cB%3e%3cFONT%20COLOR=%27#EE0000%27>%20Note%20that%20the%20star/galaxy%20estimators%20may%20be%20mixed%20up%0a%20in%20dense%20regions.%0a%3cP%3e%0a
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mas/yr
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mas/yr
Ndet
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mag
R2mag
mag
Imag
mag
1 3.66415 23 02.23008-01 20 55.27320886-0248364230.759292-01.348687 503891979.2 -46 -203  15.16  11.2013.77
2 5.13915 23 02.32680-01 20 57.13080886-0248367230.759695-01.3492031945841974.8 0 0217.48    12.07  
3 5.63815 23 01.92336-01 20 50.52120886-0248362230.758014-01.3473679994671979.2 -118 204317.91     9.4013.73
4 5.82315 23 02.25600-01 20 51.80280886-0248366230.759400-01.347723 141491971.7 0 02  15.29    14.83
5 7.53915 23 01.70688-01 20 49.85160886-0248359230.757112-01.3471816674451977.3 0 0512.19 9.9710.54 9.41 9.76
6 7.99515 23 02.43936-01 21 00.40320886-0248370230.760164-01.3501126167661968.0 -6 -74317.6415.1015.43    
7 8.07315 23 01.82616-01 20 48.38280886-0248360230.757609-01.346773 349991974.8 0 02  14.66   9.40  
%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