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VizieR

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J/A+A/616/A97/dr7a SDSS QSO DR7 and DR9 (D'Isanto+, 2018)
SDSS object IDs and coordinates of the quasars for experiment DR7a (83982 rows)
  recno=13456
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ColumnValue  Explain   (UCD)
_RAJ200009 32 59.6043144 "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+04 05 06.067788 "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)
_RAB195009 30 22.8993771 "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+04 18 25.458147 "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)
_Glon229.8658084555 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 37.4237414344 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)
13456recno 13456  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

objID588010359607066665  SDSS DR7 objID (meta.id)
RAJ2000143.24835131 deg (i) Right ascension (J2000.0) (pos.eq.ra;meta.main)
DEJ2000 4.08501883 deg (i) Declination (J2000.0) (pos.eq.dec;meta.main)

SDSS-DR7DR7  Display the SDSS data for this object (meta.ref.url)
  
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