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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=1237657222019481608
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200009 53 25.11624 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+52 15 51.7788 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195009 50 05.35726 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+52 30 00.7684 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon163.29103061 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+48.51070260 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)

SDSS9J095325.11+521551.7  (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-ID2735-301-5-0043-0008   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237657222019481608  (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)
parentID1237657222019481604  Pointer to parent (if object deblended) (meta.id.parent)
flags 802018100A105C  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000401   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS148.354651 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+52.264383 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.014 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2001.8876 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)
umag18.795 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.029 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag17.519 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.006 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag16.955 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.005 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag16.614 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.006 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag16.466 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.013 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 8004010008018  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)
uDate2001.8876 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag18.795 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.029 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag20.359 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.046 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag18.795 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 0.059 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 4.76 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 0.42 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.74 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE 0.22 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad 6.00 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.400 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA 38.3 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 8004010088018  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)
gDate2001.8877 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag17.519 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.006 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag19.116 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.016 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag17.528 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.014 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 4.44 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.25 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.02 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 4.97 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.410 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA 36.0 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 10004010008018  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)
rDate2001.8876 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag16.955 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.005 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag18.812 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.019 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag16.950 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.012 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 4.62 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.30 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 5.34 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.450 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA 35.8 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 800401002901C  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)
iDate2001.8876 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag16.614 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.006 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag18.464 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.019 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag16.651 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.014 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 4.52 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 24.87 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.06 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.01 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 5.12 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.457 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA 35.3 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 8004010008018  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)
zDate2001.8877 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag16.466 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.013 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag18.292 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.031 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag16.479 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.032 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 4.39 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 0.01 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 5.49 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.453 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA 36.4 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA -9 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 -5 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 0.41 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.26 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)15.9 mag Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E)15.7 mag Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J)15.0 mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)15.4 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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