V/147/sdss12* output of the SDSS photometric catalogmode[1/2] 1: primary (469,053,874 sources), 2: secondary (324,960,094 sources)meta.code.classintobjIDSDSS unique object identifier (2)meta.id;meta.mainindexedSp-ID? Spectroscopic Plate-MJD-Fiber identifier (7)meta.idcharindexedspType? Source type (sourceType) (10)src.classchariFlagsDetection flags, i band (flags_i) (3)meta.codeRA_ICRSRight Ascension of the object (ICRS) at Epoch="ObsDate" (ra)degpos.eq.ra;meta.mainindexedDE_ICRSDeclination of the object (ICRS) at Epoch="ObsDate" (dec)degpos.eq.dec;meta.mainindexedq_mode[+] '+' indicates clean photometry (310,190,812 sources with mode 1+) (clean)meta.code.qual;instr.setupcharclassType of object (3=galaxy, 6=star) (1)src.classintSDSS12SDSS-DR12 name, based on J2000 positionmeta.idcharindexedm_SDSS12[*] The asterisk indicates that 2 different SDSS objects share the same SDSS12 namemeta.code.multipcharImImage from SDSS-server (DR12)meta.ref.urlcharSDSS-ID[0-9 -] SDSS object identifier (13)meta.idcharindexedSpObjIDPointer to the spectrum of object, or 0 (7)meta.idparentIDPointer to parent (if object deblended)meta.id.parentflagsPhoto Object Attribute flags (3)meta.code.errorStatusHexadecimal status (4)meta.codeinte_RA_ICRS[0/51703] Mean error on RAdeg (raErr)arcsecstat.error;pos.eq.rafloate_DE_ICRS[0/20301] Mean error on DEdeg (decErr)arcsecstat.error;pos.eq.decfloatQ[1/3] Quality of the observation: 1=bad 2=acceptable 3=goodmeta.code.qual;obs.param;obsintumag[4/38]? Model magnitude in u filter, AB scale (u) (5)magphot.mag;em.opt.Ufloatnullableindexede_umag? Mean error on umag (err_u)magstat.error;phot.magfloatnullablegmag[5/40]? Model magnitude in g filter, AB scale (g) (5)magphot.mag;em.opt.Bfloatnullableindexede_gmag? Mean error on gmag (err_g)magstat.error;phot.magfloatnullablermag[4/39]? Model magnitude in r filter, AB scale (r) (5)magphot.mag;em.opt.Rfloatnullableindexede_rmag? Mean error on rmag (err_r)magstat.error;phot.magfloatnullableimag[3/40]? Model magnitude in i filter, AB scale (i) (5)magphot.mag;em.opt.Ifloatnullableindexede_imag? Mean error on imag (err_i)magstat.error;phot.magfloatnullablezmag[3/38]? Model magnitude in z filter, AB scale (z) (5)magphot.mag;em.opt.Ifloatnullableindexede_zmag? Mean error on zmag (err_z)magstat.error;phot.magfloatnullablezsp[-0.02/7.1]? Spectroscopic redshift (when SpObjID>0) (7)src.redshiftdoublenullableindexede_zsp? Mean error on zsp (negative for bad fit) (7)stat.errordoublenullablef_zsp[0/196]? "zwarning" flag (9)meta.codeintnullableVdisp[0/850]? Velocity dispersion (velDisp)km/sphys.veloc.dispersiondoublenullablee_Vdisp? Mean error on Vdisp (velDispErr)km/sstat.errorfloatnullablespInst? Spectral instrument used (SDSS or BOSS) (instrument)meta.id;instrcharspCl? Spectroscopic class: GALAXY, QSO, STARmeta.code.class;pos.parallax.spectcharsubCl? Spectroscopic subclass (subClass) (11)src.spTypecharspS/N[0/132]? Median signal-to-noise over all good pixels (snMedian)em.wl.central;stat.medianfloatnullableuFlagsDetection flags, u band (flags_u) (3)meta.codeus0=notStar, 1=Star in u band (probPSF_u)src.class.starGalaxyintuc[0/6] Phototype in u band, 6=Star (type_u) (1)src.class.starGalaxyintuDateDate of observation in u band (6)yrtime.epochdoubleu'mag[4/38]? Model magnitude in u' filter (= umag) (5)magphot.mag;em.opt.Ufloatnullablee_u'mag? Mean error on u'mag (= e_umag)magstat.error;phot.magfloatnullableupmag[5/34]? PSF magnitude in u band (psfMag_u)magphot.mag;em.opt.Ufloatnullablee_upmag? Mean error on upmag (psfMagErr_u)magstat.error;phot.magfloatnullableuPmag[3/43]? Petrosian magnitude in u band (petroMag_u)magphot.mag;em.opt.Ufloatnullablee_uPmag? Mean error on uPmag (petroMagErr_u)magstat.error;phot.magfloatnullableuPrad[0/260]? Petrosian radius in u band (petroRad_u)arcsecphys.angSize;srcfloatnullablee_uPrad? Mean error in uPrad (petroRadErr_u)arcsecstat.errordoublenullableuoRA? Offset of u position along RA (offsetRa_u)arcsecpos.angDistancefloatnullableuoDE? Offset of u position along Dec (offsetDec_u)arcsecpos.angDistancefloatnullableudVrad? de Vaucouleurs fit radius, u band (deVRad_u)arcsecphys.angSize;srcfloatnullableudVell? de Vaucouleurs fit ellipt, u band (1-deVAB_u)arcsecsrc.ellipticityfloatnullableuPA? Position angle of dVrad in u band (deVPhi_u)degpos.posAngfloatnullablegFlagsDetection flags, g band (flags_g) (3)meta.codegs0=notStar, 1=Star in g band (probPSF_g)src.class.starGalaxyintgcPhototype in g band, 6=Star (type_g) (1)src.class.starGalaxyintgDateDate of observation in g band (6)yrtime.epochdoubleg'mag[5/39]? Model magnitude in g' filter (= gmag) (5)magphot.mag;em.opt.Bfloatnullablee_g'mag? Mean error on g'mag (= e_gmag)magstat.error;phot.magfloatnullablegpmag[5/37]? PSF magnitude in g band (psfMag_g)magphot.mag;em.opt.Bfloatnullablee_gpmag? Mean error on gpmag (psfMagErr_g)magstat.error;phot.magfloatnullablegPmag[4/46]? Petrosian magnitude in g band (petroMag_g)magphot.mag;em.opt.Bfloatnullablee_gPmag? Mean error on gPmag (petroMagErr_g)magstat.error;phot.magfloatnullablegPrad? Petrosian radius in g band (petroRad_g)arcsecphys.angSize;srcfloatnullablee_gPrad? Mean error in gPrad (petroRadErr_g)arcsecstat.errordoublenullablegoRA? Offset of g position along RA (offsetRa_g)arcsecpos.angDistancefloatnullablegoDE? Offset of g position along Dec (offsetDec_g)arcsecpos.angDistancefloatnullablegdVrad? de Vaucouleurs fit radius, g band (deVRad_g)arcsecphys.angSize;srcfloatnullablegdVell? de Vaucouleurs fit ellipt, g band (1-deVAB_g)arcsecsrc.ellipticityfloatnullablegPA? Position angle of dVrad in g band (deVPhi_g)degpos.posAngfloatnullablerFlagsDetection flags, r band (flags_r) (3)meta.coders0=notStar, 1=Star in r band (probPSF_r)src.class.starGalaxyintrcPhototype in r band, 6=Star (type_r) (1)src.class.starGalaxyintrDateDate of observation in r band (6)yrtime.epochdoubler'mag[4/39]? Model magnitude in r' filter (= rmag) (5)magphot.mag;em.opt.Rfloatnullablee_r'mag? Mean error on r'mag (= e_rmag)magstat.error;phot.magfloatnullablerpmag[4/33]? PSF magnitude in r band (psfMag_r)magphot.mag;em.opt.Rfloatnullablee_rpmag? Mean error on rpmag (psfMagErr_r)magstat.error;phot.magfloatnullablerPmag[4/43]? Petrosian magnitude in r band (petroMag_r)magphot.mag;em.opt.Rfloatnullablee_rPmag? Mean error on rPmag (petroMagErr_r)magstat.error;phot.magfloatnullablerPrad? Petrosian radius in r band (petroRad_r)arcsecphys.angSize;srcfloatnullablee_rPrad? Mean error in rPrad (petroRadErr_r)arcsecstat.errordoublenullableroRA? Offset of r position along RA (offsetRa_r)arcsecpos.angDistancefloatnullableroDE? Offset of r position along Dec (offsetDec_r)arcsecpos.angDistancefloatnullablerdVrad? de Vaucouleurs fit radius, r band (deVRad_r)arcsecphys.angSize;srcfloatnullablerdVell? de Vaucouleurs fit ellipt, r band (1-deVAB_r)arcsecsrc.ellipticityfloatnullablerPA? Position angle of dVrad in r band (deVPhi_r)degpos.posAngfloatnullableis0=notStar, 1=Star in i band (probPSF_i)src.class.starGalaxyinticPhototype in i band, 6=Star (type_i) (1)src.class.starGalaxyintiDateDate of observation in i band (6)yrtime.epochdoublei'mag[3/40]? Model magnitude in i' filter (= imag) (5)magphot.mag;em.opt.Ifloatnullablee_i'mag? Mean error on i'mag (= e_imag)magstat.error;phot.magfloatnullableipmag[3/34]? PSF magnitude in i band (psfMag_i)magphot.mag;em.opt.Ifloatnullablee_ipmag? Mean error on ipmag (psfMagErr_i)magstat.error;phot.magfloatnullableiPmag[3/45]? Petrosian magnitude in i band (petroMag_i)magphot.mag;em.opt.Ifloatnullablee_iPmag? Mean error on iPmag (petroMagErr_i)magstat.error;phot.magfloatnullableiPrad? Petrosian radius in i band (petroRad_i)arcsecphys.angSize;srcfloatnullablee_iPrad? Mean error in iPrad (petroRadErr_i)arcsecstat.errordoublenullableioRA? Offset of i position along RA (offsetRa_i)arcsecpos.angDistancefloatnullableioDE? Offset of i position along Dec (offsetDec_i)arcsecpos.angDistancefloatnullableidVrad? de Vaucouleurs fit radius, i band (deVRad_i)arcsecphys.angSize;srcfloatnullableidVell? de Vaucouleurs fit ellipt, i band (1-deVAB_i)arcsecsrc.ellipticityfloatnullableiPA? Position angle of dVrad in i band (deVPhi_i)degpos.posAngfloatnullablezFlagsDetection flags, z band (flags_z) (3)meta.codezs0=notStar, 1=Star in z band (probPSF_z)src.class.starGalaxyintzcPhototype in z band, 6=Star (type_z) (1)src.class.starGalaxyintzDateDate of observation in z band (6)yrtime.epochdoublez'mag[3/38]? Model magnitude in z filter (= zmag) (5)magphot.mag;em.opt.Ifloatnullablee_z'mag? Mean error on z'mag (= e_zmag)magstat.error;phot.magfloatnullablezpmag[3/32]? PSF magnitude in z band (psfMag_z)magphot.mag;em.opt.Ifloatnullablee_zpmag? Mean error on zpmag (psfMagErr_z)magstat.error;phot.magfloatnullablezPmag[3/42]? Petrosian magnitude in z band (petroMag_z)magphot.mag;em.opt.Ifloatnullablee_zPmag? Mean error on zPmag (petroMagErr_z)magstat.error;phot.magfloatnullablezPrad? Petrosian radius in z band (petroRad_z)arcsecphys.angSize;srcfloatnullablee_zPrad? Mean error in zPrad (petroRadErr_z)arcsecstat.errordoublenullablezoRA? Offset of z position along RA (offsetRa_z)arcsecpos.angDistancefloatnullablezoDE? Offset of z position along Dec (offsetDec_z)arcsecpos.angDistancefloatnullablezdVrad? de Vaucouleurs fit radius, z band (deVRad_z)arcsecphys.angSize;srcfloatnullablezdVell? de Vaucouleurs fit ellipt, z band (1-deVAB_z)arcsecsrc.ellipticityfloatnullablezPA? Position angle of dVrad in z band (deVPhi_z)degpos.posAngfloatnullablepmRA[-6121/4129]? Proper motion along Right Ascension (pmRa) (8)mas/yrpos.pm;pos.eq.rafloatnullablee_pmRA? Mean error on pmRA (pmRaErr) (8)mas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE[-4846/4437]? Proper motion along Declination (pmDec) (8)mas/yrpos.pm;pos.eq.decfloatnullablee_pmDE? Mean error on pmDE (pmDecErr) (8)mas/yrstat.error;pos.pm;pos.eq.decfloatnullablesigRA[0/8662]? RMS residual of proper motion fit in RA (8)masstat.fit.residualfloatnullablesigDE[0/10625]? RMS residual of proper motion fit in Dec (8)masstat.fit.residualfloatnullableM[1/4]? Number of USNO-B objects matched within 1arcsec (match) (8)meta.numberintnullableN[4/6]? Number of detections used in the pm fit, including SDSS (nFit) (8)meta.numberintnullableg(O)? Magnitude from O plate recalibrated to g (8)phot.mag;em.opt.Bfloatnullabler(E)? Magnitude from E plate recalibrated to r (8)phot.mag;em.opt.Rfloatnullableg(J)? Magnitude from J plate recalibrated to g (8)phot.mag;em.opt.Bfloatnullabler(F)? Magnitude from F plate recalibrated to r (8)phot.mag;em.opt.Rfloatnullablei(N)? Magnitude from N plate recalibrated to i (8)phot.mag;em.opt.Ifloatnullablezph[-9999/]? Photometric redshift; estimated by robust fit to nearest neighbors in a reference set (12)src.redshiftdoublenullableindexede_zph[-9999/]? Estimated error of the photometric redshift (zErr) (12)stat.errordoublenullable<zph>[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.photfloatnullablechi2? Chi-square value for the minimum chi-square template fit (chisq_zph)stat.valuefloatnullableu'Mag[-644/4]? rest frame u' absolute magnitude (absMagU)magphys.magAbsdoublenullableg'Mag[-472/3]? rest frame g' absolute magnitude (absMagG)magphys.magAbsdoublenullabler'Mag[-351/3]? rest frame r' absolute magnitude (absMagR)magphys.magAbsdoublenullablei'Mag[-271/7]? rest frame i' absolute magnitude (absMagI)magphys.magAbsdoublenullablez'Mag[-199/3]? rest frame z' absolute magnitude (absMagZ)magphys.magAbsdoublenullableObsDateMean Observation date (6)yrtime.epoch;obs;stat.meandoubleindexed