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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=1237655349961491402
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200015 15 34.75296 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+55 40 17.2848 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195015 14 14.73807 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+55 51 18.0239 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon090.74205994 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+51.48278722 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)

SDSS9J151534.75+554017.2  (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-ID2299-301-6-0209-0970   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237655349961491402  (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)
parentID 0  Pointer to parent (if object deblended) (meta.id.parent)
flags 1001010020300  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000401   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS228.894804 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.222 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+55.671468 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.212 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2001.3751 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)
umag24.633 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 1.786 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag23.236 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.378 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag22.087 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.214 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag20.821 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.119 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag21.102 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.549 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 20000008808101  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)
uDate2001.3751 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag24.633 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 1.786 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag24.896 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 1.091 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag28.909 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 0.262 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 0.01 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE 0.04 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad 0.00 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.067 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA135.6 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 20000008808101  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)
gDate2001.3751 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag23.236 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.378 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag23.717 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.345 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag22.910 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.713 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 0.01 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE 0.01 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gdVrad 4.11 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.050 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA124.5 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 808101  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)
rDate2001.3751 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag22.087 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.214 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag22.721 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.221 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag22.196 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.658 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 2.97 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad  arcsec Mean error in rPrad (petroMagErr_r) (stat.error)
roRA 0.00 arcsec Offset of r position along RA (offsetRa_r) (pos.angDistance)
roDE 0.02 arcsec Offset of r position along Dec (offsetDec_r) (pos.angDistance)
rdVrad 3.68 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)
rPA165.9 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 10004010008000  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)
iDate2001.3751 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag20.821 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.119 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag21.492 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.133 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag20.878 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.581 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 2.92 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 2.75 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.00 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 1.71 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.278 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA170.3 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 20000008028201  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)
zDate2001.3751 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag21.102 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.549 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag21.741 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.490 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag22.722 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 4.037 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 3.15 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 3.03 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA -0.01 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE 0.03 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zdVrad 0.13 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.103 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA177.3 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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