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V/147/sdss12 The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
Data Release 12 (469,053,874 primary sources plus 324,960,094 secondary sources); 3,538,079 spectroscopic targets (original column names in green) (794013968 rows)
  -c=179.696845 +53.425730, eq=ICRS, rs=2
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ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (179.696845+53.425730)[ICRS] (pos.angDistance)
_RAJ200011 58 47.24280 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+53 25 32.6280 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195011 56 12.49547 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+53 42 14.3172 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon139.70548689 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+61.95436156 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)

ra179.696845 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
dec+53.425730 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
mode1   [1/2] 1: primary (469,053,874 sources), 2: secondary (324,960,094 sources) (meta.code.class)
clean    [+] '+' indicates clean photometry (310,190,812 sources with mode 1+) (clean) (meta.code.qual;instr.setup)
class3  Type of object (3=galaxy, 6=star) (Note 1)   (src.class)
SDSS12J115847.24+532532.6  (i) SDSS-DR12 name, based on J2000 position (meta.id)
m_SDSS12    [*] The asterisk indicates that 2 different SDSS objects share the same SDSS12 name (meta.code.multip)

DR12Im  Image from SDSS-server (DR12) (meta.ref.url)

SDSS-ID2830-301-6-0399-0125  (i) [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237657630601576573  (i) SDSS unique object identifier (2) (links to SDSS-DR12 details) (Note)   (meta.id;meta.main)
Sp-ID 882-52370-0380  (i) Spectroscopic Plate-MJD-Fiber identifier (7) (Note)   (meta.id)
SpObjID 993148211201861632  Pointer to the spectrum of object, or 0 (Note 7)   (meta.id)
parentID1237657630601576572  Pointer to parent (if object deblended) (meta.id.parent)
flags 73429821325185112  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status 257  Hexadecimal status (Note 4)   (meta.code)
raErr 0.159 arcsec [0/51703] Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
decErr 0.194 arcsec [0/20301] Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2001.9697 yr (i) Mean Observation date (Note 6)   (time.epoch;obs;stat.mean)
Q3   [1/3] Quality of the observation: 1=bad 2=acceptable 3=good (meta.code.qual;obs.param;obs)
u16.360 mag (i) [4/38] Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
err_u 0.017 mag Mean error on umag (err_u) (stat.error;phot.mag)
g15.351 mag (i) [5/40] Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
err_g 0.004 mag Mean error on gmag (err_g) (stat.error;phot.mag)
r14.787 mag (i) [4/39] Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
err_r 0.006 mag Mean error on rmag (err_r) (stat.error;phot.mag)
i14.690 mag (i) [3/40] Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
err_i 0.008 mag Mean error on imag (err_i) (stat.error;phot.mag)
z14.841 mag (i) [3/38] Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
err_z 0.037 mag Mean error on zmag (err_z) (stat.error;phot.mag)
zsp 0.00370  (i) [-0.02/7.1] Spectroscopic redshift (when SpObjID>0) (Note 7)   (src.redshift)
e_zsp 0.00001   Mean error on zsp (negative for bad fit) (Note 7)   (stat.error)
f_zsp 0   [0/196] "zwarning" flag (Note 9)   (meta.code)
velDisp 91.727379 km/s [0/850] Velocity dispersion (velDisp) (phys.veloc.dispersion)
velDispErr36.997 km/s Mean error on Vdisp (velDispErr) (stat.error)
instrumentSDSS   Spectral instrument used (SDSS or BOSS) (instrument) (meta.id;instr)
sourceTypeGALAXY   Source type (sourceType) (10) (list of types) (Note)   (src.class)
spClGALAXY   Spectroscopic class: GALAXY, QSO, STAR (meta.code.class;pos.parallax.spect)
subClassSTARFORMING   Spectroscopic subclass (subClass) (Note 11)   (src.spType)
snMedian 7.43   [0/132] Median signal-to-noise over all good pixels (snMedian) (em.wl.central;stat.median)
flags_u 2463181192728601  Detection flags, u band (flags_u) (Note 3)   (meta.code)
probPSF_u0  0=notStar, 1=Star in u band (probPSF_u) (src.class.starGalaxy)
type_u3   [0/6] Phototype in u band, 6=Star (type_u) (Note 1)   (src.class.starGalaxy)
uDate2001.9697 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag16.360 mag [4/38] Model magnitude in u' filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.017 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
psfMag_u20.935 mag [5/34] PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
psfMagErr_u 0.122 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
petroMag_u17.201 mag [3/43] Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
petroMagErr_u 0.324 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
petroRad_u 23.403 arcsec [0/260] Petrosian radius in u band (petroRad_u) (phys.angSize;src)
petroRadErr_u 1.546 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
offsetRa_u -2.03 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
offsetDec_u -0.09 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
deVRad_u 29.676 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.453 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
deVPhi_u145.1 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
flags_g 74309394120216600  Detection flags, g band (flags_g) (Note 3)   (meta.code)
probPSF_g0  0=notStar, 1=Star in g band (probPSF_g) (src.class.starGalaxy)
type_g3  Phototype in g band, 6=Star (type_g) (Note 1)   (src.class.starGalaxy)
gDate2001.9697 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag15.351 mag [5/39] Model magnitude in g' filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.004 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag)
psfMag_g20.632 mag [5/37] PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
psfMagErr_g 0.028 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
petroMag_g15.393 mag [4/46] Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
petroMagErr_g 0.033 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
petroRad_g 26.323 arcsec Petrosian radius in g band (petroRad_g) (phys.angSize;src)
petroRadErr_g 1.885 arcsec Mean error in gPrad (petroRadErr_g) (stat.error)
offsetRa_g 8.60 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
offsetDec_g 0.08 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
deVRad_g 29.672 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.861 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
deVPhi_g146.0 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
flags_r 6755674587430936  Detection flags, r band (flags_r) (Note 3)   (meta.code)
probPSF_r0  0=notStar, 1=Star in r band (probPSF_r) (src.class.starGalaxy)
type_r3  Phototype in r band, 6=Star (type_r) (Note 1)   (src.class.starGalaxy)
rDate2001.9697 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag14.787 mag [4/39] Model magnitude in r' filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.006 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag)
psfMag_r19.881 mag [4/33] PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
psfMagErr_r 0.029 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
petroMag_r14.860 mag [4/43] Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
petroMagErr_r 0.007 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
petroRad_r 27.193 arcsec Petrosian radius in r band (petroRad_r) (phys.angSize;src)
petroRadErr_r 2.251 arcsec Mean error in rPrad (petroRadErr_r) (stat.error)
offsetRa_r 0.00 arcsec Offset of r position along RA (offsetRa_r) (pos.angDistance)
offsetDec_r 0.00 arcsec Offset of r position along Dec (offsetDec_r) (pos.angDistance)
deVRad_r 29.678 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.592 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
deVPhi_r146.6 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
flags_i 2322443704373273  Detection flags, i band (flags_i) (Note 3)   (meta.code)
probPSF_i0  0=notStar, 1=Star in i band (probPSF_i) (src.class.starGalaxy)
type_i3  Phototype in i band, 6=Star (type_i) (Note 1)   (src.class.starGalaxy)
iDate2001.9697 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag14.690 mag [3/40] Model magnitude in i' filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.008 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag)
psfMag_i19.692 mag [3/34] PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
psfMagErr_i 0.031 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
petroMag_i14.873 mag [3/45] Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
petroMagErr_i 0.036 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
petroRad_i 25.349 arcsec Petrosian radius in i band (petroRad_i) (phys.angSize;src)
petroRadErr_i 1.818 arcsec Mean error in iPrad (petroRadErr_i) (stat.error)
offsetRa_i 0.22 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
offsetDec_i -0.09 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
deVRad_i 29.666 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.508 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
deVPhi_i146.7 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
flags_z 11329642959110169  Detection flags, z band (flags_z) (Note 3)   (meta.code)
probPSF_z0  0=notStar, 1=Star in z band (probPSF_z) (src.class.starGalaxy)
type_z3  Phototype in z band, 6=Star (type_z) (Note 1)   (src.class.starGalaxy)
zDate2001.9697 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag14.841 mag [3/38] Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.037 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag)
psfMag_z19.736 mag [3/32] PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
psfMagErr_z 0.082 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
petroMag_z15.453 mag [3/42] Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
petroMagErr_z 0.176 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
petroRad_z 21.168 arcsec Petrosian radius in z band (petroRad_z) (phys.angSize;src)
petroRadErr_z 1.468 arcsec Mean error in zPrad (petroRadErr_z) (stat.error)
offsetRa_z 1.26 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
offsetDec_z -0.30 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
deVRad_z 29.670 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.367 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
deVPhi_z147.3 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRa -18.7 mas/yr [-6121/4129] Proper motion along Right Ascension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
pmRaErr 3.7 mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDec 3.0 mas/yr [-4846/4437] Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
pmDecErr 3.7 mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA 847.69 mas [0/8662] RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE898.04 mas [0/10625] RMS residual of proper motion fit in Dec (Note 8)   (stat.fit.residual)
match 1   [1/4] Number of USNO-B objects matched within 1arcsec (match) (Note 8)   (meta.number)
nFit 4   [4/6] Number of detections used in the pm fit, including SDSS (nFit) (Note 8)   (meta.number)
g(O)14.2   Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E) 0.0   Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J) 0.0   Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)11.1   Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N)16.1   Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
zph 0.0838  (i) [-9999/] Photometric redshift; estimated by robust fit to nearest neighbors in a reference set (Note 12)   (src.redshift)
zErr 0.0923   [-9999/] Estimated error of the photometric redshift (zErr) (Note 12)   (stat.error)
nnAvgZ 0.0567   [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)
chisq_zph 15.167   Chi-square value for the minimum chi-square template fit (chisq_zph) (stat.value)
absMagU -21.684 mag [-644/4] rest frame u' absolute magnitude (absMagU) (phys.magAbs)
absMagG -22.819 mag [-472/3] rest frame g' absolute magnitude (absMagG) (phys.magAbs)
absMagR -23.212 mag [-351/3] rest frame r' absolute magnitude (absMagR) (phys.magAbs)
absMagI -23.133 mag [-271/7] rest frame i' absolute magnitude (absMagI) (phys.magAbs)
absMagZ -22.958 mag [-199/3] rest frame z' absolute magnitude (absMagZ) (phys.magAbs)
  
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