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II/306/sdss8 The SDSS Photometric Catalog, Release 8 (Adelman-McCarthy+, 2011)
Data Release 8 (469,053,874 primary sources, plus 324,960,076 secondary sources). Notice that the new reductions used for the SDSS-DR8 introduced some errors in the astrometry, especially at declinations δ≥41°; when possible, the astrometry of the SDSS-DR7 (Cat. II/294) should be preferred. (324960076 rows)
  objID=1237661382768132188
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Note: SDSS is also available from http://www.sdss.org/

ColumnValue  Explain   (UCD)
_RAJ200009 02 42.53928 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+30 23 04.5564 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195008 59 41.13349 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+30 34 56.6711 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon194.83082294 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+40.29572735 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)
cl6  Type (class) of object (3=galaxy, 6=star) (Note 1)   (src.class)

SDSS8J090242.53+302304.5  (i) SDSS-DR8 name, based on J2000 position (meta.id)
m_SDSS8    [*] The asterisk indicates that 2 different SDSS objects share the same SDSS8 name (meta.code.multip)
ImIm  Image from SDSS-serveur (meta.ref.url)

R8   [8] Release inclusion (all observations were reprocessed, value is always 8) (meta.note)
SDSS-ID3704-301-3-0029-0092   [0-9-] SDSS object identifier (Note 2)   (meta.id)
objID1237661382768132188  (i) SDSS unique object identifier (2) (links to SDSS-DR8 details) (Note)   (meta.id;meta.main)
SpObjID1790207564932212736  Pointer to the spectrum of object, or 0 (7) (Note)   (meta.id)
parentID1237661382768132187  Pointer to parent (if object deblended) (meta.id.parent)
flags00000000001010000200  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000101  Hexadecimal status (Note 4)   (meta.code)
RA_ICRS135.677247 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.004 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+30.384599 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.004 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
zsp 0.58905   Spectroscopic redshift (when SpObjID>0) (Note 7)   (src.redshift)
e_zsp0.00011   Mean error on zsp (Note 7)   (stat.error)
umag18.781 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.018 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag18.423 mag (i) Model magnitude in g filter, AB scale (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.007 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag18.478 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.008 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag18.307 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.009 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag18.384 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.024 mag Mean error on zmag (err_z) (stat.error;phot.mag;em.opt.I)
Q3  Quality of the observation (0=unknown): 1=bad 2=acceptable 3=good 4=missing 5=hole (Note 6)   (meta.code.qual;obs.param;obs)
ObsDate2003.1793 yr Mean Observation date (time.epoch;obs;stat.mean)
uFlags00000000000019008200  Detection flags, u band (flags_u) (Note 3)   (meta.code)
us1   [0,1] 0=notStar, 1=Star in u band (probPSF_u) (src.class.starGalaxy)
uc6   [0,9] Phototype in u band, 6=Star (type_u) (Note 1)   (src.class.starGalaxy)
uDate2003.1793 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag18.781 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.018 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag18.802 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.023 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag18.844 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 0.021 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 1.31 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 0.03 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.05 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 0.09 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.901 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA102.9 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags00000000000010008000  Detection flags, g band (flags_g) (Note 3)   (meta.code)
gs1   [0,1] 0=notStar, 1=Star in g band (probPSF_g) (src.class.starGalaxy)
gc6   [0,9] Phototype in g band, 6=Star (type_g) (Note 1)   (src.class.starGalaxy)
gDate2003.1793 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag18.423 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.007 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag18.464 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.018 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag18.459 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.007 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 1.25 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.01 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.05 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE 0.03 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gdVrad 0.10 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.323 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA 48.1 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags00000010000010008000  Detection flags, r band (flags_r) (Note 3)   (meta.code)
rs1   [0,1] 0=notStar, 1=Star in r band (probPSF_r) (src.class.starGalaxy)
rc6   [0,9] Phototype in r band, 6=Star (type_r) (Note 1)   (src.class.starGalaxy)
rDate2003.1793 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag18.478 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.008 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag18.549 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.014 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag18.512 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.010 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 1.30 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.02 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 0.12 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.250 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA 44.4 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags00000000000010008200  Detection flags, i band (flags_i) (Note 3)   (meta.code)
is1   [0,1] 0=notStar, 1=Star in i band (probPSF_i) (src.class.starGalaxy)
ic6   [0,9] Phototype in i band, 6=Star (type_i) (Note 1)   (src.class.starGalaxy)
iDate2003.1793 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag18.307 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.009 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag18.384 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.017 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag18.322 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.011 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 1.21 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.02 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.02 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.00 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 0.11 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.245 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA 18.0 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags00000000004018008000  Detection flags, z band (flags_z) (Note 3)   (meta.code)
zs1   [0,1] 0=notStar, 1=Star in z band (probPSF_z) (src.class.starGalaxy)
zc6   [0,9] Phototype in z band, 6=Star (type_z) (Note 1)   (src.class.starGalaxy)
zDate2003.1793 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag18.384 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.024 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag18.458 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.027 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag18.348 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.038 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 1.50 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 2.73 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 0.19 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.432 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA 52.6 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA 6 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 -4 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 0.077 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.076 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)18.4 mag Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E)18.5 mag Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J)19.0 mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)18.4 mag Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N)18.5 mag Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
  
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