VizieR

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VizieR

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J/A+A/495/691/bzcat1 Multifrequency catalogue of blazars, Roma-BZCAT (Massaro+, 2009)
Multi-frequency catalogue of blazars (Roma-BZCAT) Version 1.0 (2009-November) (old version) (2837 rows)
  recno=2010
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ColumnValue  Explain   (UCD)
_RAJ200015 34 47.200 "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+37 15 54.00 "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)
_RAB195015 32 54.372 "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+37 25 50.40 "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)
_Glon059.859649 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+54.289026 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)
2010recno 2010  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Seq2010  Sequential number (meta.record)
NameBZBJ1534+3715  Source name (based on J2000 position) (meta.id;meta.main)
RAJ200015 34 47.2 "h:m:s" (i) Right ascension (J2000.0) (pos.eq.ra;meta.main)
DEJ2000+37 15 54.0 "d:m:s" (i) Declination (J2000.0) (pos.eq.dec;meta.main)
z 0.143  Redshift (src.redshift)
u_z    [?] Comment (uncertainty) on redshift (meta.code.error;src.redshift)
Rmag16.3 mag R magnitude (phot.mag;em.opt.R)
n_Rmag   Comment on Rmag (other band) (meta.note)
ClassZBZ  Source classification (Note G1)   (src.class)
FR 22.0 mJy Radio flux, from NVSS or SUMSS (Note 2)   (phot.flux.density;em.opt.R)
r_FR    [fpsw] Origin of radio flux (Note 2)   (meta.ref;pos.frame)
FX 0.228 fW/m2 X-ray flux (in 10–12erg/cm2/s) (phot.flux;em.X-ray)

SimbadSimbad  ask the Simbad data-base about this object (meta.ref.url)
  
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