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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=1237676325511102784
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200002 59 56.19216 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+00 04 17.1948 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195002 57 22.45995 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-00 07 35.5281 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon176.86632737 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-48.86447769 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)

SDSS9J025956.19+000417.2  (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-ID7183-301-4-0256-0320   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237676325511102784  (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)
parentID1237676325511102783  Pointer to parent (if object deblended) (meta.id.parent)
flags 80201890000058  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000401   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS044.984134 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.079 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+00.071443 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.082 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2007.8858 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)
umag22.276 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.770 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag21.154 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.123 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag20.382 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.062 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag19.984 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.050 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag19.940 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.162 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 20000008008019  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)
uDate2007.8858 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag22.276 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.770 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag22.895 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.747 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag26.647 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 6.362 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 1.76 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 0.32 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.02 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE -0.02 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad 0.46 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)
uPA124.4 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 8004010008018  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)
gDate2007.8858 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag21.154 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.123 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag21.866 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.130 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag21.286 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.311 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 2.25 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.32 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA -0.19 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE 0.21 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gdVrad 1.24 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.575 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA140.3 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 18004010008018  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)
rDate2007.8858 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag20.382 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.062 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag21.341 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.073 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag20.331 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.135 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 2.30 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.49 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 1.60 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.682 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA135.6 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 8004010008018  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)
iDate2007.8858 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag19.984 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.050 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag21.033 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.063 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag19.858 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.128 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 2.23 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.25 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.20 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.07 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 2.00 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.679 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA133.9 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 8004018008018  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)
zDate2007.8858 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag19.940 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.162 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag20.642 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.159 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag19.569 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.348 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 7.21 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 2.31 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA 0.54 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE -0.23 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zdVrad 1.91 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.342 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA174.1 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA 14 mas/yr Proper motion along RightAscension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
e_pmRA 4 mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDE 16 mas/yr Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
e_pmDE 4 mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA 0.62 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.91 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)
N5  Number of detections used in the pm fit, including SDSS (nFit) (Note 8)   (meta.number)
g(O)20.2 mag Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E)19.5 mag Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J)20.5 mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)20.0 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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