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VizieR

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VII/273/hmq The Half Million Quasars (HMQ) catalogue (Flesch, 2015)
The Half Million Quasars catalogue (510764 rows)
  recno=152855
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ColumnValue  Explain   (UCD)
_RAJ200009 38 14.81400 "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+02 00 23.5300 "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 35 39.61871 "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+02 13 56.5975 "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)
_Glon232.96052870 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+37.42162741 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)
152855recno 152855  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ2000144.561725 deg (i) Right ascension (J2000) (Note 1)   (pos.eq.ra;meta.main)
DEJ2000+02.006536 deg (i) Declination (J2000) (Note 1)   (pos.eq.dec;meta.main)
Name2MASX J09381483+0200236  ID from the literature (meta.id;meta.main)
r_Name1667   Reference for name, in refs.dat file (meta.ref;pos.frame)
ClA   [ABKQq] Classification of object (Note 2)   (src.class)
AX   [2RX ] Summary of associations for object (Note 3)   (meta.code)
Rmag14.9 mag Red optical magnitude (Note 4)   (phot.mag;em.opt.R)
Bmag15.8 mag Blue optical magnitude (Note 4)   (phot.mag;em.opt.B)
Comp  Comment on optical object (Note 5)   (meta.note;spect.dopplerVeloc.opt;em.opt)
R1   [1nx-] Red optical PSF class (Note 6)   (src.class.starGalaxy)
B1   [1nx-] Blue optical PSF class (Note 6)   (src.class.starGalaxy)
z 0.174   Redshift from the literature (Note 7)   (src.redshift)
r_z1669   Reference for redshift, in refs.dat file (meta.ref;pos.frame)
XName1RXS J093815.6+020026  X-ray ID, if any (Note 9)   (meta.id.assoc)
RName   Radio ID, if any (Note 9)   (meta.id.assoc)
Lobe1   Radio lobe ID or extra R/X ID, if any (Note 9)   (meta.id.assoc)
Lobe2   Radio lobe ID or extra X-ray ID, if any (Note 9)   (meta.id.assoc)
  
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