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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=1237653668470784654
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Note: SDSS is also available from http://www.sdss3.org/dr9/

ColumnValue  Explain   (UCD)
_RAJ200010 15 50.17536 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-00 44 21.1308 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195010 13 16.74028 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-00 29 23.3180 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon243.19052924 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+43.36808529 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)
cl0  Type (class) of object (3=galaxy, 6=star) (Note 1)   (src.class)

SDSS9J101550.17-004421.1  (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-ID1908-301-2-0041-0654   [0-9 -] SDSS object identifier (Note 2)   (meta.id)
objID1237653668470784654  (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 810000100A0104  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000401   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
RA_ICRS153.959064 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.056 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS-00.739203 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.066 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ObsDate2000.9158 yr Mean Observation date (time.epoch;obs;stat.mean)
Q1   [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)
umag  mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag  mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag  mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag  mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag  mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag  mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag  mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag  mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag  mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag  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 400000000000185  Detection flags, u band (flags_u) (Note 3)   (meta.code)
us2   [0,1] 0=notStar, 1=Star in u band (probPSF_u) (src.class.starGalaxy)
uc0   [0,9] Phototype in u band, 6=Star (type_u) (Note 1)   (src.class.starGalaxy)
uDate2000.9158 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag  mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag  mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag  mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag  mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag  mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag  mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 2.97 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad  arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.07 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE 0.13 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad  arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell  arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA  deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags 4100040100801A4  Detection flags, g band (flags_g) (Note 3)   (meta.code)
gs2   [0,1] 0=notStar, 1=Star in g band (probPSF_g) (src.class.starGalaxy)
gc0   [0,9] Phototype in g band, 6=Star (type_g) (Note 1)   (src.class.starGalaxy)
gDate2000.9158 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag  mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag  mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag  mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag  mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag  mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag  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 0.01 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  arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell  arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA  deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags 400000000020185  Detection flags, r band (flags_r) (Note 3)   (meta.code)
rs2   [0,1] 0=notStar, 1=Star in r band (probPSF_r) (src.class.starGalaxy)
rc0   [0,9] Phototype in r band, 6=Star (type_r) (Note 1)   (src.class.starGalaxy)
rDate2000.9158 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag  mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag  mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag  mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag  mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag  mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag  mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 2.97 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad  arcsec Mean error in rPrad (petroMagErr_r) (stat.error)
roRA 0.07 arcsec Offset of r position along RA (offsetRa_r) (pos.angDistance)
roDE 0.14 arcsec Offset of r position along Dec (offsetDec_r) (pos.angDistance)
rdVrad  arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell  arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA  deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags 400000000020185  Detection flags, i band (flags_i) (Note 3)   (meta.code)
is2   [0,1] 0=notStar, 1=Star in i band (probPSF_i) (src.class.starGalaxy)
ic0   [0,9] Phototype in i band, 6=Star (type_i) (Note 1)   (src.class.starGalaxy)
iDate2000.9158 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag  mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag  mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag  mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag  mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag  mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag  mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 2.97 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad  arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.07 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.14 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad  arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell  arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA  deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags 400000000020185  Detection flags, z band (flags_z) (Note 3)   (meta.code)
zs2   [0,1] 0=notStar, 1=Star in z band (probPSF_z) (src.class.starGalaxy)
zc0   [0,9] Phototype in z band, 6=Star (type_z) (Note 1)   (src.class.starGalaxy)
zDate2000.9158 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag  mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag  mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag  mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag  mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag  mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag  mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 2.97 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad  arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA 0.07 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE 0.14 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zdVrad  arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell  arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA  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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