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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=1237653013529952311
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200003 00 01.74936 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+00 49 59.3256 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195002 57 27.39259 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+00 38 06.8752 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon176.06650186 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-48.31596977 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)
cl6  Type (class) of object (3=galaxy, 6=star) (Note 1)   (src.class)

SDSS9J030001.74+004959.3  (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-ID1755-301-6-0677-0055   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237653013529952311  (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)
parentID1237653013529952310  Pointer to parent (if object deblended) (meta.id.parent)
flags 80001010000200  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000401   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS045.007289 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.001 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+00.833146 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.001 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2000.7542 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)
umag17.729 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.012 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag16.384 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)
rmag15.908 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.004 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag15.745 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)
zmag15.657 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 10008000  Detection flags, u band (flags_u) (Note 3)   (meta.code)
us1   [0,1] 0=notStar, 1=Star in u band (probPSF_u) (src.class.starGalaxy)
uc6   [0,9] Phototype in u band, 6=Star (type_u) (Note 1)   (src.class.starGalaxy)
uDate2000.7542 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag17.729 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.012 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag17.712 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.020 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag17.716 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 0.013 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 1.50 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 0.03 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA -0.04 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE 0.01 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad 0.08 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.656 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA134.0 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 10008000  Detection flags, g band (flags_g) (Note 3)   (meta.code)
gs1   [0,1] 0=notStar, 1=Star in g band (probPSF_g) (src.class.starGalaxy)
gc6   [0,9] Phototype in g band, 6=Star (type_g) (Note 1)   (src.class.starGalaxy)
gDate2000.7542 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag16.384 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)
gpmag16.411 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.023 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag16.423 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.003 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 1.52 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.02 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 0.12 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.420 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA107.2 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 10000010008000  Detection flags, r band (flags_r) (Note 3)   (meta.code)
rs1   [0,1] 0=notStar, 1=Star in r band (probPSF_r) (src.class.starGalaxy)
rc6   [0,9] Phototype in r band, 6=Star (type_r) (Note 1)   (src.class.starGalaxy)
rDate2000.7542 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag15.908 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.004 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag15.904 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.012 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag15.943 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.002 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 1.48 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.02 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 0.01 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.938 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA 66.0 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 4010008000  Detection flags, i band (flags_i) (Note 3)   (meta.code)
is1   [0,1] 0=notStar, 1=Star in i band (probPSF_i) (src.class.starGalaxy)
ic6   [0,9] Phototype in i band, 6=Star (type_i) (Note 1)   (src.class.starGalaxy)
iDate2000.7542 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag15.745 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)
ipmag15.740 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.015 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag15.780 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.003 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 1.40 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.02 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA -0.01 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 0.00 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.738 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA 66.8 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 19008200  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)
zDate2000.7542 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag15.657 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)
zpmag15.650 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.015 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag15.704 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.007 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 18.57 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 1.71 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA 0.00 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 0.00 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.661 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA 70.6 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA 0 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 -3 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 0.18 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.05 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)16.3 mag Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E)15.9 mag Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J)16.4 mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)16.0 mag Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N)15.9 mag Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
  
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