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.

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ACTflag
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1 5.10316 49 51.19080+40 26 00.88081275-09079597252.463295+40.433578    12.612.41954.515
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1 3.5816 49 51.1704+40 25 59.3760307401161252.46321+40.43316 0.314.68 0.40 1300CL1982.390
2 4.5016 49 51.1512+40 26 00.3120307401161252.46313+40.43342 0.315.14 0.40 13009J1982.390
%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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%3cBR%3e%0a%3cEM%3e1&%3cFONT%20COLOR=%27#CD5B45%27>%203.97&%3cFONT%20COLOR=%27#CD5B45%27>16%2049%2051.1632&%3cFONT%20COLOR=%27#CD5B45%27>%2b40%2025%2059.772&0307401161&252.46318&%2b40.43327&%200.3&14.70&%200.40&%201&3&1982.390%3cBR%3e%0a%3cEM%3e2&%3cFONT%20COLOR=%27#CD5B45%27>%204.73&%3cFONT%20COLOR=%27#CD5B45%27>16%2049%2051.1704&%3cFONT%20COLOR=%27#CD5B45%27>%2b40%2026%2000.528&0307401161&252.46321&%2b40.43348&%200.3&15.16&%200.40&%201&3&1982.390%3cBR%3e%0a %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%3cB%3e%3cFONT%20COLOR=%27#CD5B45%27>%20The%20current%20version%20includes%20only%20the%20North%20%28POSS-I%20plates%29%3cP%3e%0a
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1 4.86716 49 51.19800+40 26 00.6324EO1135-0296709252.463325+40.43350912.40   2 17.04 27.2 0.3812.69   1 13.03 28.1 0.29  
2 4.97816 49 51.09336+40 26 00.7620EO0743-0288235252.462889+40.43354510.47   1 15.77 27.2 0.3810.93   1 21.20 29.0 0.46  
%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20The%20construction%20of%20the%20%0a%3cB%3eGSC-II%20%0ais%20still%20in%20progress:%20this%0aversion%20has%20no%20proper%20motions,%20and%20the%20magnitude%20limits%20are%2018.5%20in%20F%20%28red%29%0aand%2019.5%20in%20J%20%28blue%29.%20The%20data%20are%20%3cB%3e%3cFONT%20COLOR=%27#0000CD%27>copyrighted,%20check%20%0athe%20%3cB%3edata%20use%20Policy.%0a%3cP%3e%0a
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1 4.71316 49 51.17184+40 26 00.5100N132311244252.463216+40.4334751993.37911.88  12.72  3 11.63 0.42 %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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mag
1 4.96916 49 51.13080+40 26 00.78001304-0268534252.463045+40.433550 66 591972.4 0 0412.3011.4811.9511.14  
2 4.98516 49 51.19800+40 26 00.75121304-0268536252.463325+40.4335421752081967.0 0 0312.2712.58  11.26  
3 6.29116 49 51.45672+40 26 00.95281304-0268537252.464403+40.433598999 601971.4 0 0213.58  13.03    
4 8.99216 49 50.74872+40 26 03.62041304-0268531252.461453+40.4343399999991975.5 0 02  18.49    11.01
%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
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R
1 4.96916 49 51.130656+40 26 00.780001304-0272197YM252.4630444+40.4335500B 0.0 0.0 0.0 0.016.850Y    11.140B15.56415.19614.836   2 4.98416 49 51.198000+40 26 00.750121304-0272199..252.4633250+40.4335417B 0.0 0.0 0.0 0.012.270o    11.260B         3 6.28816 49 51.456672+40 26 00.949921304-0272200..252.4644028+40.4335972B 0.0 0.0 0.0 0.013.030B                 4 8.99116 49 50.748672+40 26 03.620041304-0272194..252.4614528+40.4343389B 0.0 0.0 0.0 0.0        18.490e         %0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20Zone%20-30/%2b50deg%3cP%3e%0a
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1 4.61716 49 51.14952+40 26 00.4272164951.1+402600  252.463123+40.43345216.207 215.565    
%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
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1 4.71316 49 51.17208+40 26 00.5100N63A000044252.463217+40.4334751993.37911.8812.7213.3912.283 11.63 0.42
%0a%0a%3cP%3e%0a%3cFONT%20SIZE=%27-1%27%3e%3cEM%3e%3cFONT%20COLOR=%27#0000FF%27>%3cB%3eNote:%20%20The%20limiting%20magnitude%20is%20about%2015.2%20in%20the%20GSC%20photometric%20system.%3cP%3e%0a