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V/139/sdss9 The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
Data Release 9 (469,053,874 primary sources plus 324,960,076 secondary sources); 2,674,200 spectroscopic targets. Data Release 9 is the first release of the spectra from the SDSS-III's Baryon Oscillation Spectroscopic Survey (BOSS). The photometric part contains the same sources as the Data Release 8, with a corrected astrometry. (324960076 rows)
  objID=1237662619729068670
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200016 33 57.33264 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+23 39 13.9320 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195016 31 50.78367 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+23 45 25.5466 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon042.04492988 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+40.02865362 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)

mode2   [1,2] 1: primary (469,053,874 sources), 2: secondary (324,960,076 sources). (meta.code.class)
q_mode    [+] '+' indicates clean photometry (105,969,748 sources with mode 1+) (meta.code.qual;instr.setup)
cl3  Type (class) of object (3=galaxy, 6=star) (Note 1)   (src.class)

SDSS9J163357.33+233913.9  (i) SDSS-DR9 name, based on J2000 position (meta.id)
m_SDSS9    [*] The asterisk indicates that 2 different SDSS objects share the same SDSS9 name (meta.code.multip)
ImIm  Image from SDSS-server (meta.ref.url)

SDSS-ID3992-301-3-0187-0638   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237662619729068670  (i) SDSS unique object identifier (2) (links to SDSS-DR9 details) (Note)   (meta.id;meta.main)
Sp-ID   Spectroscopic Plate-MJD-Fiber identifier (Note 7)   (meta.id)
SpObjID 0  Pointer to the spectrum of object, or 0 (7) (Note)   (meta.id)
parentID1237662619729068669  Pointer to parent (if object deblended) (meta.id.parent)
flags 201190000110  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000401   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS248.488886 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.209 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+23.653870 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.198 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2003.4697 yr Mean Observation date (time.epoch;obs;stat.mean)
Q3   [0/5] Quality of the observation (0=unknown): 1=bad 2=acceptable 3=good 4=missing 5=hole (Note 6)   (meta.code.qual;obs.param;obs)
umag22.826 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.680 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag22.256 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.176 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag21.615 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.137 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag21.533 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.190 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag20.790 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.404 mag Mean error on zmag (err_z) (stat.error;phot.mag;em.opt.I)
zsp    Spectroscopic redshift (when SpObjID>0) (Note 7)   (src.redshift)
e_zsp    Mean error on zsp (negative for bad fit) (Note 7)   (stat.error)
f_zsp    [0/255] "zwarning" flag (Note 9)   (meta.code)
Vdisp  km/s Velocity dispersion (velDisp) (phys.veloc.dispersion)
e_Vdisp  km/s Mean error on Vdisp (velDispErr) (stat.error)
spInst    [SDSS BOSS] Spectral instrument (instrument) (meta.id;instr)
spType   Source type (sourceType) (10) (list of types) (Note)   (src.class)
spCl   Spectroscopic class (class): GALAXY, QSO, STAR (meta.code.class;pos.parallax.spect)
subClass   Spectroscopic subclass (subClass) (Note 11)   (src.spType)
spS/N    Median signal-to-noise over all good pixels (snMedian) (em.wl.central;stat.median)
uFlags 28000008808111  Detection flags, u band (flags_u) (Note 3)   (meta.code)
us0   [0,1] 0=notStar, 1=Star in u band (probPSF_u) (src.class.starGalaxy)
uc3   [0,9] Phototype in u band, 6=Star (type_u) (Note 1)   (src.class.starGalaxy)
uDate2003.4697 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag22.826 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.680 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag23.953 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.952 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag21.956 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 0.631 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 2.97 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad  arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.35 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE -0.11 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad 29.67 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.050 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA132.3 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 8004018808110  Detection flags, g band (flags_g) (Note 3)   (meta.code)
gs0   [0,1] 0=notStar, 1=Star in g band (probPSF_g) (src.class.starGalaxy)
gc3   [0,9] Phototype in g band, 6=Star (type_g) (Note 1)   (src.class.starGalaxy)
gDate2003.4697 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag22.256 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.176 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag22.893 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.177 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag22.388 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.524 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 2.97 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad  arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.79 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE -0.16 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gdVrad 1.10 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.419 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA130.2 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 18004010008010  Detection flags, r band (flags_r) (Note 3)   (meta.code)
rs0   [0,1] 0=notStar, 1=Star in r band (probPSF_r) (src.class.starGalaxy)
rc3   [0,9] Phototype in r band, 6=Star (type_r) (Note 1)   (src.class.starGalaxy)
rDate2003.4697 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag21.615 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.137 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag22.482 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.160 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag21.927 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.355 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 2.61 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.53 arcsec Mean error in rPrad (petroMagErr_r) (stat.error)
roRA 0.00 arcsec Offset of r position along RA (offsetRa_r) (pos.angDistance)
roDE 0.00 arcsec Offset of r position along Dec (offsetDec_r) (pos.angDistance)
rdVrad 3.07 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.050 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA 85.6 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 8004018008010  Detection flags, i band (flags_i) (Note 3)   (meta.code)
is0   [0,1] 0=notStar, 1=Star in i band (probPSF_i) (src.class.starGalaxy)
ic3   [0,9] Phototype in i band, 6=Star (type_i) (Note 1)   (src.class.starGalaxy)
iDate2003.4697 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag21.533 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.190 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag21.981 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.154 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag22.191 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.734 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 1.91 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.40 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.10 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.00 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 0.71 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.100 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA 27.4 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 800E011  Detection flags, z band (flags_z) (Note 3)   (meta.code)
zs1   [0,1] 0=notStar, 1=Star in z band (probPSF_z) (src.class.starGalaxy)
zc6   [0,9] Phototype in z band, 6=Star (type_z) (Note 1)   (src.class.starGalaxy)
zDate2003.4697 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag20.790 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.404 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag21.081 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.290 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag21.071 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 1.180 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 0.07 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 0.36 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA 0.59 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE -0.16 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zdVrad 0.19 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.072 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA 0.3 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA  mas/yr Proper motion along RightAscension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
e_pmRA  mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDE  mas/yr Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
e_pmDE  mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA  arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE  arcsec RMS residual of proper motion fit in Dec (Note 8)   (stat.fit.residual)
M0  Number of USNO-B objects matched within 1arcsec (match) (Note 8)   (meta.number)
N0  Number of detections used in the pm fit, including SDSS (nFit) (Note 8)   (meta.number)
g(O)  mag Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E)  mag Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J)  mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)  mag Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N)  mag Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
  
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