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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=1237660241918492768
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200002 27 13.45008 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+00 53 55.9860 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195002 24 39.14684 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+00 40 30.3052 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon166.23295575 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-53.71936529 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)

SDSS9J022713.45+005355.9  (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-ID3438-301-6-0045-0096   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237660241918492768  (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)
parentID1237660241918492767  Pointer to parent (if object deblended) (meta.id.parent)
flags 80201010021010  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000401   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS036.806042 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.022 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+00.898885 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.022 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2002.8317 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)
umag19.705 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.056 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag18.754 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.011 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag18.343 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.011 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag18.060 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.013 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag17.991 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.042 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 8004010008010  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)
uDate2002.8317 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag19.705 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.056 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag20.699 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.067 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag19.839 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 0.132 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 3.68 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 0.43 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.08 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE -0.06 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad 2.26 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.924 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA148.5 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 8004010029010  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)
gDate2002.8317 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag18.754 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.011 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag19.992 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.021 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag18.707 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.019 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 3.74 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.07 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.06 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE 0.03 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gdVrad 3.08 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.888 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA 99.4 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 18004010029010  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)
rDate2002.8317 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag18.343 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.011 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag19.575 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.022 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag18.356 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.022 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 3.72 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.10 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 2.70 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.900 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA 92.9 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 8004010008010  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)
iDate2002.8317 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag18.060 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.013 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag19.206 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.023 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag18.077 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.028 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 3.65 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.12 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA -0.02 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.02 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 2.65 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.921 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA 76.1 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 8004018008010  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)
zDate2002.8317 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag17.991 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.042 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag18.993 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.049 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag18.295 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.125 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 3.05 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 0.28 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA -0.08 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE -0.02 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zdVrad 1.68 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.953 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA 74.8 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA -5 mas/yr Proper motion along RightAscension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
e_pmRA 3 mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDE -1 mas/yr Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
e_pmDE 3 mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA 0.09 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.12 arcsec RMS residual of proper motion fit in Dec (Note 8)   (stat.fit.residual)
M1  Number of USNO-B objects matched within 1arcsec (match) (Note 8)   (meta.number)
N6  Number of detections used in the pm fit, including SDSS (nFit) (Note 8)   (meta.number)
g(O)18.1 mag Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E)18.5 mag Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J)18.3 mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)18.0 mag Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N)17.8 mag Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
  
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