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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. (794013950 rows)
  objID=1237655108381966894
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200013 31 22.46448 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+58 56 10.8636 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195013 29 31.54581 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+59 11 35.5683 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon113.36246781 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+57.44375722 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)

mode1   [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)

SDSS9J133122.46+585610.8  (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-ID2243-301-4-0398-0558  (i) [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237655108381966894  (i) SDSS unique object identifier (2) (links to SDSS-DR9 details) (Note)   (meta.id;meta.main)
Sp-ID   (i) Spectroscopic Plate-MJD-Fiber identifier (Note 7)   (meta.id)
SpObjID 0  Pointer to the spectrum of object, or 0 (7) (Note)   (meta.id)
parentID1237655108381966893  Pointer to parent (if object deblended) (meta.id.parent)
flags0000000201890000110  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000101   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS202.843602 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.139 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+58.936351 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.081 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2001.2875 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)
umag23.604 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.755 mag Mean error on umag (err_u) (stat.error;phot.mag)
gmag22.779 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.197 mag Mean error on gmag (err_g) (stat.error;phot.mag)
rmag21.332 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.083 mag Mean error on rmag (err_r) (stat.error;phot.mag)
imag20.605 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.063 mag Mean error on imag (err_i) (stat.error;phot.mag)
zmag19.957 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.137 mag Mean error on zmag (err_z) (stat.error;phot.mag)
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)
uFlags0000028000008808011  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)
uDate2001.2875 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag23.604 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.755 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag23.769 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.585 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag23.247 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 1.395 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 0.99 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 0.89 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.03 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 29.67 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)
uPA144.2 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags0000008004018808110  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)
gDate2001.2875 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag22.779 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.197 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag)
gpmag23.156 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.195 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag22.105 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.259 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 2.97 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad  arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.16 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE 0.49 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gdVrad 19.96 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.135 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA 44.8 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags0000018004010008010  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)
rDate2001.2875 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag21.332 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.083 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag)
rpmag21.859 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.094 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag21.524 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.242 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 2.28 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.36 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 1.11 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.050 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA 78.3 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags0000008004010008010  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)
iDate2001.2875 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag20.605 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.063 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag)
ipmag21.062 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.067 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag20.834 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.221 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 2.20 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.29 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.18 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.10 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 0.88 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.200 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA 73.2 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags0000008004018008010  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)
zDate2001.2875 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag19.957 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.137 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag)
zpmag20.370 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.130 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag20.183 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.422 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 2.20 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 1.11 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA 0.02 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE -0.20 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zdVrad 0.60 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.050 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA 75.9 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA  mas/yr Proper motion along RightAscension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
e_pmRA  mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDE  mas/yr Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
e_pmDE  mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA  arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE  arcsec RMS residual of proper motion fit in Dec (Note 8)   (stat.fit.residual)
M0  Number of USNO-B objects matched within 1arcsec (match) (Note 8)   (meta.number)
N0  Number of detections used in the pm fit, including SDSS (nFit) (Note 8)   (meta.number)
g(O)  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)  mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)  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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