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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=1237658629158535208
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200012 28 44.23488 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+11 45 40.4208 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195012 26 12.15275 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+12 02 15.1677 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon282.70964887 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+73.73517350 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)

mode1   [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)

SDSS9J122844.23+114540.4  (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-ID3063-301-2-0049-0040   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237658629158535208  (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)
parentID1237658629158535197  Pointer to parent (if object deblended) (meta.id.parent)
flags 6008900A105C  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000101   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS187.184312 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.019 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+11.761228 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.038 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2002.2242 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)
umag17.026 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.015 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag15.546 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.004 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag14.797 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.003 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag14.427 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.004 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag14.025 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.006 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 40100A901C  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)
uDate2002.2242 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag17.026 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.015 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag20.136 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.063 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag16.728 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 0.043 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 15.29 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 1.47 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.33 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE 1.26 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 0.280 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA 32.8 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 4040100A901D  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)
gDate2002.2242 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag15.546 mag 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;em.opt.B)
gpmag18.671 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.091 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag15.436 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.086 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 12.40 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 1.45 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.05 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE -0.04 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gdVrad 23.82 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.283 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA 32.2 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 104040100A9019  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)
rDate2002.2242 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag14.797 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.003 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag18.267 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.104 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag14.621 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.083 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 12.38 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 1.72 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 19.60 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.332 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA 32.2 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 4040100A901D  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)
iDate2002.2242 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag14.427 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.004 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag17.975 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.109 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag14.246 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.083 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 12.51 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 1.77 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.18 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.05 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 19.11 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.342 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA 32.3 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 404010088019  Detection flags, z band (flags_z) (Note 3)   (meta.code)
zs0   [0,1] 0=notStar, 1=Star in z band (probPSF_z) (src.class.starGalaxy)
zc3   [0,9] Phototype in z band, 6=Star (type_z) (Note 1)   (src.class.starGalaxy)
zDate2002.2242 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag14.025 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.006 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag17.442 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.090 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag13.937 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.076 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 12.34 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 1.46 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA -0.36 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE -0.39 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zdVrad 24.85 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.267 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA 31.9 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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