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I/243
  The PMM USNO-A1.0 Catalogue (Monet 1997)
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This catalogue is obsoleted by I/252
Post annotation 		img(gal)
1.I/243/outThe Full Catalogue (Note) (488006860 rows)
USNO-A1.0 contains 488,006,860 sources, and was compiled from the blue/red overlaps of the detection lists generated from scans of POSS-I O and E plates (>=-30°) and SRC-J and ESO-R plates (<=-35°). USNO-A1.0 was created by Dave Monet () and collaborators at Flagstaff Station, U.S. Naval Observatory; it is superseded by the new PMM-USNO-A2.0 version.
The VizieR search engine uses an on-line compressed version (3.4Gbytes) which was generated at CDS.

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  USNO-A1.0 (char) (i) Original designation in USNO-A1.0 catalogue (Note)   (meta.id;meta.main)
  RA(ICRS) deg (i) Right ascension (ICRS) mean of blue/red plates (pos.eq.ra;meta.main)
  DE(ICRS) deg (i) Declination (ICRS) mean of blue/red plates (pos.eq.dec;meta.main)
  GSCflag (char) [G] 'G' when star belongs to GSC (Cat. I/220) (meta.note)
  Mflag (char) [*] '*' magnitudes are probably wrong (meta.code)
  Bmag mag Magnitude from blue plate (phot.mag;em.opt.B)
  Rmag mag Magnitude from red plate (phot.mag;em.opt.R)
  Epoch yr (n) Mean epoch of position (Note)   (time.epoch)

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