VizieR

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VizieR

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VII/285/gdr2ext Gaia DR2 quasar and galaxy classification (Bailer-Jones+, 2019)
GDR2 extragalactic catalogue (2690021 rows)
  recno=640325
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ColumnValue  Explain   (UCD)
_RAJ200012 24 11.6693551558 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2015.5 (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+55 50 06.050879310 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2015.5 (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)
_RAB195012 21 47.8134589710 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J2015.5 (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+56 06 42.681430368 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J2015.5 (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)
_Glon130.7965978286636 deg Galactic longitude at Epoch=J2015.5 (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 60.8752934000571 deg Galactic latitude at Epoch=J2015.5 (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)
640325recno 640325  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

GDR21574241376685601792  Gaia-DR2 identification number (source_id) (meta.id;meta.main)
pqso 0.000164  Quasar probability (stat.fit.goodness)
pgal 0.998927  Galaxy probability (stat.fit.goodness)
RA_ICRS186.04862231315 deg (i) Gaia DR2 right ascension (ICRS) at Ep=2015.5 (added by CDS) (pos.eq.ra;meta.main)
DE_ICRS 55.83501413314 deg (i) Gaia DR2 declination (ICRS) at Ep=2015.5 (added by CDS) (pos.eq.dec;meta.main)

_RA.icrs186.04862231315 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+55.83501413314 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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