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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=1237653011367461373
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200000 43 18.62928 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-00 44 25.8936 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195000 40 45.04822 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-01 00 51.1604 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon118.36828891 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-63.54023524 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)

SDSS9J004318.62-004425.8  (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-ID1755-301-2-0448-0509   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237653011367461373  (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 81923290020000  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000401   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS010.827622 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.069 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS-00.740526 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.093 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2000.7539 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)
umag23.464 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 1.135 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag21.488 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.091 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag20.751 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.065 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag20.540 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.084 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag20.559 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.290 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 2000000800E001  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)
uDate2000.7539 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag23.464 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 1.135 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag23.418 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.781 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag23.865 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 2.830 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 0.74 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 0.67 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA -0.01 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE -0.03 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad 15.35 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)
uPA 34.6 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 904010028000  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)
gDate2000.7539 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag21.488 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.091 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag21.953 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.123 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag21.438 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.162 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 2.76 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.48 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.33 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE 0.28 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gdVrad 0.77 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.950 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA115.8 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 10004010008000  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)
rDate2000.7539 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag20.751 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.065 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag21.329 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.071 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag20.759 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.140 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 2.04 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.23 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 1.30 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.507 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA 31.5 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 4010008000  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)
iDate2000.7539 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag20.540 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.084 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag21.247 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.092 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag20.460 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.149 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 2.72 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.38 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.26 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.51 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 1.39 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.520 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA 63.2 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 20000008008001  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)
zDate2000.7539 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag20.559 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.290 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag21.230 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.333 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag20.211 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.436 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 2.72 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 2.55 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA 0.00 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE -0.02 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zdVrad 2.64 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.105 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA 54.1 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA -4 mas/yr Proper motion along RightAscension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
e_pmRA 6 mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDE 17 mas/yr Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
e_pmDE 6 mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA 0.38 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.37 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)
N4  Number of detections used in the pm fit, including SDSS (nFit) (Note 8)   (meta.number)
g(O)20.6 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)20.4 mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)19.5 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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