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=2681635
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ColumnValue  Explain   (UCD)
_RAJ200020 06 31.8262513320 "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)
_DEJ2000-15 39 06.794180572 "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)
_RAB195020 03 41.9613403175 "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)
_DEB1950-15 47 47.074065718 "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)
_Glon 26.7464364785155 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-23.5042736396023 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)
2681635recno 2681635  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

GDR26877243406934793344  Gaia-DR2 identification number (source_id) (meta.id;meta.main)
pqso 0.839441  Quasar probability (stat.fit.goodness)
pgal 0.000000  Galaxy probability (stat.fit.goodness)
RA_ICRS301.63260938055 deg (i) Gaia DR2 right ascension (ICRS) at Ep=2015.5 (added by CDS) (pos.eq.ra;meta.main)
DE_ICRS-15.65188727238 deg (i) Gaia DR2 declination (ICRS) at Ep=2015.5 (added by CDS) (pos.eq.dec;meta.main)

_RA.icrs301.63260938055 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs-15.65188727238 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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