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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=178.722806 +28.262398, eq=ICRS, rs=2
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ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (178.722806+28.262398)[ICRS] (pos.angDistance)
_RAJ200011 54 53.47344 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+28 15 44.6328 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195011 52 18.70367 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+28 32 26.0930 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon204.48239702 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+77.43889978 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)

ra178.722806 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
dec+28.262398 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)
SDSS12J115453.47+281544.6  (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-ID5087-301-6-0179-0023  (i) [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237667324328345623  (i) SDSS unique object identifier (2) (links to SDSS-DR12 details) (Note)   (meta.id;meta.main)
Sp-ID 2223-53793-0580  (i) Spectroscopic Plate-MJD-Fiber identifier (7) (Note)   (meta.id)
SpObjID2503034985733187584  Pointer to the spectrum of object, or 0 (Note 7)   (meta.id)
parentID1237667324328345620  Pointer to parent (if object deblended) (meta.id.parent)
flags 193583035846672  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status 257  Hexadecimal status (Note 4)   (meta.code)
raErr 0.067 arcsec [0/51703] Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
decErr 0.054 arcsec [0/20301] Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2004.9732 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)
u16.078 mag (i) [4/38] Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
err_u 0.008 mag Mean error on umag (err_u) (stat.error;phot.mag)
g14.308 mag (i) [5/40] Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
err_g 0.002 mag Mean error on gmag (err_g) (stat.error;phot.mag)
r13.477 mag (i) [4/39] Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
err_r 0.002 mag Mean error on rmag (err_r) (stat.error;phot.mag)
i13.036 mag (i) [3/40] Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
err_i 0.002 mag Mean error on imag (err_i) (stat.error;phot.mag)
z12.772 mag (i) [3/38] Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
err_z 0.002 mag Mean error on zmag (err_z) (stat.error;phot.mag)
zsp 0.02833  (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)
velDisp176.214066 km/s [0/850] Velocity dispersion (velDisp) (phys.veloc.dispersion)
velDispErr 3.986 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)
subClassBROADLINE   Spectroscopic subclass (subClass) (Note 11)   (src.spType)
snMedian 43.47   [0/132] Median signal-to-noise over all good pixels (snMedian) (em.wl.central;stat.median)
flags_u 2252074960195600  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)
uDate2004.9732 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag16.078 mag [4/38] Model magnitude in u' filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.008 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
psfMag_u18.698 mag [5/34] PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
psfMagErr_u 0.039 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
petroMag_u16.156 mag [3/43] Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
petroMagErr_u 0.017 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
petroRad_u 14.113 arcsec [0/260] Petrosian radius in u band (petroRad_u) (phys.angSize;src)
petroRadErr_u 0.493 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
offsetRa_u 0.07 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
offsetDec_u 0.00 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
deVRad_u 12.680 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.777 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
deVPhi_u 69.5 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
flags_g 275146772496  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)
gDate2004.9732 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag14.308 mag [5/39] Model magnitude in g' filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.002 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag)
psfMag_g16.803 mag [5/37] PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
psfMagErr_g 0.043 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
petroMag_g14.396 mag [4/46] Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
petroMagErr_g 0.094 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
petroRad_g 16.077 arcsec Petrosian radius in g band (petroRad_g) (phys.angSize;src)
petroRadErr_g 0.351 arcsec Mean error in gPrad (petroRadErr_g) (stat.error)
offsetRa_g 0.04 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
offsetDec_g -0.01 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
deVRad_g 9.893 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.736 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
deVPhi_g 82.7 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
flags_r 4503874775191568  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)
rDate2004.9732 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag13.477 mag [4/39] Model magnitude in r' filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.002 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag)
psfMag_r15.997 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_r13.583 mag [4/43] Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
petroMagErr_r 0.060 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
petroRad_r 16.173 arcsec Petrosian radius in r band (petroRad_r) (phys.angSize;src)
petroRadErr_r 0.347 arcsec Mean error in rPrad (petroRadErr_r) (stat.error)
offsetRa_r 0.06 arcsec Offset of r position along RA (offsetRa_r) (pos.angDistance)
offsetDec_r 0.02 arcsec Offset of r position along Dec (offsetDec_r) (pos.angDistance)
deVRad_r 9.079 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.741 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
deVPhi_r 84.4 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
flags_i 2252074961506320  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)
iDate2004.9732 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag13.036 mag [3/40] Model magnitude in i' filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.002 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag)
psfMag_i15.602 mag [3/34] PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
psfMagErr_i 0.024 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
petroMag_i13.106 mag [3/45] Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
petroMagErr_i 0.021 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
petroRad_i 17.675 arcsec Petrosian radius in i band (petroRad_i) (phys.angSize;src)
petroRadErr_i 0.343 arcsec Mean error in iPrad (petroRadErr_i) (stat.error)
offsetRa_i 0.00 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
offsetDec_i -0.01 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
deVRad_i 10.100 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.737 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
deVPhi_i 85.7 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
flags_z 158604820910096  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)
zDate2004.9732 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag12.772 mag [3/38] Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.002 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag)
psfMag_z15.314 mag [3/32] PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
psfMagErr_z 0.033 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
petroMag_z12.884 mag [3/42] Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
petroMagErr_z 0.005 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
petroRad_z 16.430 arcsec Petrosian radius in z band (petroRad_z) (phys.angSize;src)
petroRadErr_z 0.302 arcsec Mean error in zPrad (petroRadErr_z) (stat.error)
offsetRa_z 0.00 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
offsetDec_z 0.00 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
deVRad_z 9.283 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.806 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
deVPhi_z 82.2 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRa -16.0 mas/yr [-6121/4129] Proper motion along Right Ascension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
pmRaErr 2.6 mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDec -0.5 mas/yr [-4846/4437] Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
pmDecErr 2.6 mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA 930.17 mas [0/8662] RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE312.38 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 6   [4/6] Number of detections used in the pm fit, including SDSS (nFit) (Note 8)   (meta.number)
g(O) 9.9   Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E) 9.4   Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J) 9.5   Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F) 8.6   Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N) 9.2   Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
zph 0.0206  (i) [-9999/] Photometric redshift; estimated by robust fit to nearest neighbors in a reference set (Note 12)   (src.redshift)
zErr 0.0071   [-9999/] Estimated error of the photometric redshift (zErr) (Note 12)   (stat.error)
nnAvgZ 0.0271   [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 0.223   Chi-square value for the minimum chi-square template fit (chisq_zph) (stat.value)
absMagU -18.963 mag [-644/4] rest frame u' absolute magnitude (absMagU) (phys.magAbs)
absMagG -20.570 mag [-472/3] rest frame g' absolute magnitude (absMagG) (phys.magAbs)
absMagR -21.312 mag [-351/3] rest frame r' absolute magnitude (absMagR) (phys.magAbs)
absMagI -21.791 mag [-271/7] rest frame i' absolute magnitude (absMagI) (phys.magAbs)
absMagZ -22.020 mag [-199/3] rest frame z' absolute magnitude (absMagZ) (phys.magAbs)
  
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