VizieR

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VizieR

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I/243/out The PMM USNO-A1.0 Catalogue (Monet 1997)
The Full Catalogue (488006860 rows)
  USNO-A1.0===1125-15025417
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Note: 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 USNO-A1.0 was created by Dave Monet () and collaborators at Flagstaff Station, U.S. Naval Observatory; it is superseded by the new PMM-USNO-A2.0 version.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.

ColumnValue  Explain   (UCD)
_RAJ200019 59 01.12080 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+24 41 29.9220 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195019 56 53.98037 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+24 33 16.6701 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon 62.44813289 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat -2.55171912 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)

USNO-A1.01125-15025417  (i) Original designation in USNO-A1.0 catalogue (Note)   (meta.id;meta.main)
RA(ICRS)299.754670 deg (i) Right ascension (ICRS) mean of blue/red plates (pos.eq.ra;meta.main)
DE(ICRS) 24.691645 deg (i) Declination (ICRS) mean of blue/red plates (pos.eq.dec;meta.main)
GSCflag    [G] 'G' when star belongs to GSC (Cat. I/220) (meta.note)
Mflag    [*] '*' magnitudes are probably wrong (meta.code)
Bmag19.3 mag Magnitude from blue plate (phot.mag;em.opt.B)
Rmag14.0 mag Magnitude from red plate (phot.mag;em.opt.R)
Epoch1951.530 yr Mean epoch of position (Note)   (time.epoch)
  
elapse time 0

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Rules of usage of VizieR data

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