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J/A+A/614/A140/lqac4 Large Quasar Astrometric Catalogue 4, LQAC-4 (Gattano+, 2018)
4th release of the Large Quasar Astrometric Catalogue (443725 rows)
  recno=397031
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200018 58 34.377203520 "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)
_DEJ2000-78 11 52.07265456 "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)
_RAB195018 50 48.955267473 "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)
_DEB1950-78 15 48.97527764 "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)
_Glon316.180921379728 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-26.872735053951 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)
397031recno 397031  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

LQAC LQAC_284-078_003  (i) LQAC name given for each object based on equatorial coordinates (meta.id;meta.main)
Flag3   [3/4] Flag to recognize already recorded or new sources (Note 1)   (meta.code.error)
OName IRAS 18508-7815  Name of the quasar in the original catalog (Note 2)   (meta.id)
NatureQUASAR  Nature of the object (Note 3)   (meta.code.class)
RAOdeg284.6442000000 deg Right ascension (J2000) in original catalog (Note 4)   (pos.eq.ra)
DEOdeg-78.1978000000 deg Declination (J2000) in original catalog (Note 4)   (pos.eq.dec)
SourceGAIA  Source of the following optimized equatorial coordinates (Note 5)   (meta.code)
RAJ2000284.6432383480 deg (i) Optimized Right ascension (J2000) (Note 6)   (pos.eq.ra;meta.main)
DEJ2000-78.1977979596 deg (i) Optimized Declination (J2000) (Note 6)   (pos.eq.dec;meta.main)
e_RAJ2000 0.088 mas Uncertainity in d(alpha)xcos(delta) in Gaia DR1 (Note 7)   (stat.error;pos.eq.ra)
e_DEJ2000 0.122 mas Uncertainty in d(delta) in Gaia DR1 (Note 7)   (stat.error;pos.eq.dec)
Ref------------M  Flags indicating the presence of the quasar in the 13 catalogs belonging to the compilation (Note 8)   (meta.code)
GAIAGAIA  Flag to recognize recorded sources in GAIA-DR1 (Note 9)   (meta.code)
z 0.16100  (i) Redshift (src.redshift)
umag  mag Photometric magnitude in Optical u band between 300 and 400 nm (Note 10)   (phot.mag;em.opt.U)
Bmag15.590 mag Photometric magnitude in Optical B band between 400 and 500 nm (Note 10)   (phot.mag;em.opt.B)
Gmag15.916 mag Photometric magnitude in Optical G Gaia band (phot.mag;em.opt.R)
Vmag  mag Photometric magnitude in Optical V band between 500 and 600 nm (Note 10)   (phot.mag;em.opt.V)
gmag  mag Photometric magnitude in Optical g band between 400 and 500 nm (Note 10)   (phot.mag;em.opt.R)
rmag  mag Photometric magnitude in Optical r band between 600 and 750 nm (Note 10)   (phot.mag;em.opt.R)
imag  mag Photometric magnitude in Optical i band between 750 and 1000 nm (Note 10)   (phot.mag;em.opt.I)
zmag  mag Photometric magnitude in Optical z band (Note 10)   (phot.mag;em.opt.I)
Jmag  mag Photometric magnitude in Infrared J band between 1000 and 1500 nm (Note 11)   (phot.mag;em.IR.J)
Kmag  mag Photometric magnitude in Infrared K band between 2000 and 3000 nm (Note 11)   (phot.mag;em.IR.K)
S1.4  Jy Radio flux between 750 and 1500 MHz (20cm) (phot.flux.density;em.radio.1500-3000MHz)
S2.3  Jy Radio flux between 1500 and 3000 MHz (13cm) (phot.flux.density;em.radio.1500-3000MHz)
S5.0  Jy Radio flux between 3 and 6 GHz (6cm) (phot.flux.density;em.radio.3-6GHz)
S8.4  Jy Radio flux between 6 and 12 GHz (3.6cm) (phot.flux.density;em.radio.6-12GHz)
S23  Jy Radio flux between 12 and 30 GHz (1.2cm) (phot.flux.density;em.mm.30-50GHz)
I1B    Sharp morphology index in band B (src.morph.param)
I2B    Sround morphology index in band B (src.morph.param)
I3B    Ground morphology index in band B (src.morph.param)
I1R 0.5   Sharp morphology index in band R (src.morph.param)
I2R 0.3   Sround morphology index in band R (src.morph.param)
I3R 0.2   Ground morphology index in band R (src.morph.param)
I1I 0.7   Sharp morphology index in band I (src.morph.param)
I2I 0.3   Sround morphology index in band I (src.morph.param)
I3I 0.5   Ground morphology index in band I (src.morph.param)
BMAG-24.608 mag Absolute magnitude in band B (phys.magAbs;em.opt.B)
IMAG  mag Absolute magnitude in band I (phys.magAbs;em.opt.I)
uMAG  mag Absolute magnitude in band u (phys.magAbs)
gMAG  mag Absolute magnitude in band g (phys.magAbs)
rMAG  mag Absolute magnitude in band r (phys.magAbs)
iMAG  mag Absolute magnitude in band i (phys.magAbs)
zMAG  mag Absolute magnitude in band z (phys.magAbs)
  
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