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V/147
 The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
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1.V/147/sdss12Data Release 12 (469,053,874 primary sources plus 324,960,094 secondary sources); 3,538,079 spectroscopic targets (original column names in green) (Note) (794013968 rows)
 

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
Standard Original  
ShowSortColumn  Constraint Explain   (UCD)
  RA_ICRS deg Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
  DE_ICRS deg Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
  mode   [1/2] 1: primary (469,053,874 sources), 2: secondary (324,960,094 sources) (qualified to =1 by default) (meta.code.class)
  q_mode (char) [+] '+' indicates clean photometry (310,190,812 sources with mode 1+) (clean) (meta.code.qual;instr.setup)
  class  Type of object (3=galaxy, 6=star) (Note 1)   (src.class)
  SDSS12 (char) SDSS-DR12 name, based on J2000 position (meta.id)
  m_SDSS12 (char) [*] The asterisk indicates that 2 different SDSS objects share the same SDSS12 name (meta.code.multip)
  Im  Image from SDSS-server (DR12) (meta.ref.url)
  SDSS-ID (char) [0-9 -] SDSS object identifier (Note 2)   (meta.id)
  objID  SDSS unique object identifier (2) (links to SDSS-DR9 details) (Note)   (meta.id;meta.main)
  Sp-ID (char) Spectroscopic Plate-MJD-Fiber identifier (Note 7)   (meta.id)

ALL cols
    
   
  SpObjID  Pointer to the spectrum of object, or 0 (7) (Note)   (meta.id)
  parentID  Pointer to parent (if object deblended) (meta.id.parent)
  flags  Photo Object Attribute flags (Note 3)   (meta.code.error)
  Status  Hexadecimal status (Note 4)   (meta.code)
  e_RA_ICRS arcsec [0/51703] Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
  e_DE_ICRS arcsec [0/20301] Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
  ObsDate yr Mean Observation date (Note 6)   (time.epoch;obs;stat.mean)
  Q   [1/3] Quality of the observation: 1=bad 2=acceptable 3=good (meta.code.qual;obs.param;obs)
  umag mag (n) [4/38] Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
  e_umag mag (n) Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
  gmag mag (n) [5/40] Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
  e_gmag mag (n) Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
  rmag mag (n) [4/39] Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)

ALL cols
    
(n) indicates a possible blank or NULL column  
  e_rmag mag (n) Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
  imag mag (n) [3/40] Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
  e_imag mag (n) Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
  zmag mag (n) [3/38] Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
  e_zmag mag (n) Mean error on zmag (err_z) (stat.error;phot.mag;em.opt.I)
  zsp  (n) [-0.02/7.1] Spectroscopic redshift (when SpObjID>0) (Note 7)   (src.redshift)
  e_zsp  (n) Mean error on zsp (negative for bad fit) (Note 7)   (stat.error)
  f_zsp  (n) [0/196] "zwarning" flag (Note 9)   (meta.code)
  Vdisp km/s (n) [0/850] Velocity dispersion (velDisp) (phys.veloc.dispersion)
  e_Vdisp km/s (n) Mean error on Vdisp (velDispErr) (stat.error)
  spInst (char) Spectral instrument used (SDSS or BOSS) (instrument) (meta.id;instr)
  spType (char) Source type (sourceType) (10) (list of types) (Note)   (src.class)
  spCl (char) Spectroscopic class: GALAXY, QSO, STAR (meta.code.class;pos.parallax.spect)

ALL cols
    
(n) indicates a possible blank or NULL column  
 subCl (char) Spectroscopic subclass (subClass) (Note 11)   (src.spType)
  spS/N  (n) [0/132] Median signal-to-noise over all good pixels (snMedian) (em.wl.central;stat.median)
  uFlags  Detection flags, u band (flags_u) (Note 3)   (meta.code)
  us  0=notStar, 1=Star in u band (probPSF_u) (src.class.starGalaxy)
  uc   [0/6] Phototype in u band, 6=Star (type_u) (Note 1)   (src.class.starGalaxy)
  uDate yr Date of observation in u band (Note 6)   (time.epoch)
  u'mag mag (n) [4/38] Model magnitude in u' filter (= umag) (Note 5)   (phot.mag;em.opt.U)
  e_u'mag mag (n) Mean error on u'mag (= e_umag) (stat.error;phot.mag)
  upmag mag (n) [5/34] PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
  e_upmag mag (n) Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
  uPmag mag (n) [3/43] Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
  e_uPmag mag (n) Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
  uPrad arcsec (n) [0/260] Petrosian radius in u band (petroRad_u) (phys.angSize;src)

ALL cols
    
(n) indicates a possible blank or NULL column  
  e_uPrad arcsec (n) Mean error in uPrad (petroRadErr_u) (stat.error)
  uoRA arcsec (n) Offset of u position along RA (offsetRa_u) (pos.angDistance)
  uoDE arcsec (n) Offset of u position along Dec (offsetDec_u) (pos.angDistance)
  udVrad arcsec (n) de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
  udVell arcsec (n) de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
  uPA deg (n) Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
  gFlags  Detection flags, g band (flags_g) (Note 3)   (meta.code)
  gs  0=notStar, 1=Star in g band (probPSF_g) (src.class.starGalaxy)
  gc  Phototype in g band, 6=Star (type_g) (Note 1)   (src.class.starGalaxy)
  gDate yr Date of observation in g band (Note 6)   (time.epoch)
  g'mag mag (n) [5/39] Model magnitude in g' filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
  e_g'mag mag (n) Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
  gpmag mag (n) [5/37] PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)

ALL cols
    
(n) indicates a possible blank or NULL column  
  e_gpmag mag (n) Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
  gPmag mag (n) [4/46] Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
  e_gPmag mag (n) Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
  gPrad arcsec (n) Petrosian radius in g band (petroRad_g) (phys.angSize;src)
  e_gPrad arcsec (n) Mean error in gPrad (petroRadErr_g) (stat.error)
  goRA arcsec (n) Offset of g position along RA (offsetRa_g) (pos.angDistance)
  goDE arcsec (n) Offset of g position along Dec (offsetDec_g) (pos.angDistance)
  gdVrad arcsec (n) de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
  gdVell arcsec (n) de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
  gPA deg (n) Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
  rFlags  Detection flags, r band (flags_r) (Note 3)   (meta.code)
  rs  0=notStar, 1=Star in r band (probPSF_r) (src.class.starGalaxy)
  rc  Phototype in r band, 6=Star (type_r) (Note 1)   (src.class.starGalaxy)

ALL cols
    
(n) indicates a possible blank or NULL column  
  rDate yr Date of observation in r band (Note 6)   (time.epoch)
  r'mag mag (n) [4/39] Model magnitude in r' filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
  e_r'mag mag (n) Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
  rpmag mag (n) [4/33] PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
  e_rpmag mag (n) Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
  rPmag mag (n) [4/43] Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
  e_rPmag mag (n) Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
  rPrad arcsec (n) Petrosian radius in r band (petroRad_r) (phys.angSize;src)
  e_rPrad arcsec (n) Mean error in rPrad (petroRadErr_r) (stat.error)
  roRA arcsec (n) Offset of r position along RA (offsetRa_r) (pos.angDistance)
  roDE arcsec (n) Offset of r position along Dec (offsetDec_r) (pos.angDistance)
  rdVrad arcsec (n) de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
  rdVell arcsec (n) de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)

ALL cols
    
(n) indicates a possible blank or NULL column  
  rPA deg (n) Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
  iFlags  Detection flags, i band (flags_i) (Note 3)   (meta.code)
  is  0=notStar, 1=Star in i band (probPSF_i) (src.class.starGalaxy)
  ic  Phototype in i band, 6=Star (type_i) (Note 1)   (src.class.starGalaxy)
  iDate yr Date of observation in i band (Note 6)   (time.epoch)
  i'mag mag (n) [3/40] Model magnitude in i' filter (= imag) (Note 5)   (phot.mag;em.opt.I)
  e_i'mag mag (n) Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
  ipmag mag (n) [3/34] PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
  e_ipmag mag (n) Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
  iPmag mag (n) [3/45] Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
  e_iPmag mag (n) Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
  iPrad arcsec (n) Petrosian radius in i band (petroRad_i) (phys.angSize;src)
  e_iPrad arcsec (n) Mean error in iPrad (petroRadErr_i) (stat.error)

ALL cols
    
(n) indicates a possible blank or NULL column  
  ioRA arcsec (n) Offset of i position along RA (offsetRa_i) (pos.angDistance)
  ioDE arcsec (n) Offset of i position along Dec (offsetDec_i) (pos.angDistance)
  idVrad arcsec (n) de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
  idVell arcsec (n) de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
  iPA deg (n) Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
  zFlags  Detection flags, z band (flags_z) (Note 3)   (meta.code)
  zs  0=notStar, 1=Star in z band (probPSF_z) (src.class.starGalaxy)
  zc  Phototype in z band, 6=Star (type_z) (Note 1)   (src.class.starGalaxy)
  zDate yr Date of observation in z band (Note 6)   (time.epoch)
  z'mag mag (n) [3/38] Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
  e_z'mag mag (n) Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
  zpmag mag (n) [3/32] PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
  e_zpmag mag (n) Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)

ALL cols
    
(n) indicates a possible blank or NULL column  
  zPmag mag (n) [3/42] Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
  e_zPmag mag (n) Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
  zPrad arcsec (n) Petrosian radius in z band (petroRad_z) (phys.angSize;src)
  e_zPrad arcsec (n) Mean error in zPrad (petroRadErr_z) (stat.error)
  zoRA arcsec (n) Offset of z position along RA (offsetRa_z) (pos.angDistance)
  zoDE arcsec (n) Offset of z position along Dec (offsetDec_z) (pos.angDistance)
  zdVrad arcsec (n) de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
  zdVell arcsec (n) de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
  zPA deg (n) Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
  pmRA mas/yr (n) [-6121/4129] Proper motion along Right Ascension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
  e_pmRA mas/yr (n) Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
  pmDE mas/yr (n) [-4846/4437] Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
  e_pmDE mas/yr (n) Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)

ALL cols
    
(n) indicates a possible blank or NULL column  
  sigRA mas (n) [0/8662] RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
  sigDE mas (n) [0/10625] RMS residual of proper motion fit in Dec (Note 8)   (stat.fit.residual)
  M  (n) [1/4] Number of USNO-B objects matched within 1arcsec (match) (Note 8)   (meta.number)
  N  (n) [4/6] Number of detections used in the pm fit, including SDSS (nFit) (Note 8)   (meta.number)
  g(O)  (n) Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
  r(E)  (n) Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
  g(J)  (n) Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
  r(F)  (n) Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
  i(N)  (n) Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
  zph  (n) [-9999/] Photometric redshift; estimated by robust fit to nearest neighbors in a reference set (Note 12)   (src.redshift)
  e_zph  (n) [-9999/] Estimated error of the photometric redshift (zErr) (Note 12)   (stat.error)
  <zph>  (n) [0.009/0.9] average redshift of the nearest neighbors; if significantly different from zph this might be a better estimate than zph (nnAvgZ) (src.redshift.phot)
  chi2  (n) Chi-square value for the minimum chi-square template fit (chisq_zph) (stat.value)
  u'Mag mag (n) [-644/4] rest frame u' absolute magnitude (absMagU) (phys.magAbs)
  g'Mag mag (n) [-472/3] rest frame g' absolute magnitude (absMagG) (phys.magAbs)
  r'Mag mag (n) [-351/3] rest frame r' absolute magnitude (absMagR) (phys.magAbs)
  i'Mag mag (n) [-271/7] rest frame i' absolute magnitude (absMagI) (phys.magAbs)
  z'Mag mag (n) [-199/3] rest frame z' absolute magnitude (absMagZ) (phys.magAbs)

ALL cols
    
(n) indicates a possible blank or NULL column  
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