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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)
  -c=213.57991 +17.22828, rs=1.5, zsp=!=
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Note: SDSS is also available from http://www.sdss.org/

ColumnValue  Explain   (UCD)
_r0.025 arcsec Distance from center (213.579910+17.228280)[ICRS] (pos.angDistance)
_RAJ200014 14 19.17696 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+17 13 41.8224 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195014 11 56.85050 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+17 27 39.3693 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon009.88688493 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+68.45447396 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)

SDSS8J141419.17+171341.8  (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-ID5308-301-2-0143-0078   [0-9-] SDSS object identifier (Note 2)   (meta.id)
objID1237668271366275150  (i) SDSS unique object identifier (2) (links to SDSS-DR8 details) (Note)   (meta.id;meta.main)
SpObjID3105248236751841280  Pointer to the spectrum of object, or 0 (7) (Note)   (meta.id)
parentID1237668271366275149  Pointer to parent (if object deblended) (meta.id.parent)
flags00000000201090020010  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00000101  Hexadecimal status (Note 4)   (meta.code)
RA_ICRS213.579904 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
e_RA_ICRS 0.005 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
DE_ICRS+17.228284 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
e_DE_ICRS 0.006 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
zsp 0.12404   Spectroscopic redshift (when SpObjID>0) (Note 7)   (src.redshift)
e_zsp0.00001   Mean error on zsp (Note 7)   (stat.error)
umag18.293 mag (i) Model magnitude in u filter, AB scale (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.021 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag17.878 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)
rmag17.668 mag (i) Model magnitude in r filter, AB scale (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.007 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag17.256 mag (i) Model magnitude in i filter, AB scale (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.008 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag17.651 mag (i) Model magnitude in z filter, AB scale (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.033 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)
ObsDate2005.3534 yr Mean Observation date (time.epoch;obs;stat.mean)
uFlags00000008004010008010  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)
uDate2005.3534 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag18.293 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.021 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag19.142 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.027 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag18.393 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 0.049 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 4.75 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 1.81 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.02 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE 0.01 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
udVrad 1.16 arcsec de Vaucouleurs fit radius, u band (deVRad_u) (phys.angSize;src)
udVell 0.571 arcsec de Vaucouleurs fit ellipt, u band (1-deVAB_u) (src.ellipticity)
uPA 3.0 deg Position angle of dVrad in u band (deVPhi_u) (pos.posAng)
gFlags00000008004010008010  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)
gDate2005.3534 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag17.878 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)
gpmag18.863 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.021 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag17.990 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.021 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 4.89 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.69 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.06 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 2.00 arcsec de Vaucouleurs fit radius, g band (deVRad_g) (phys.angSize;src)
gdVell 0.547 arcsec de Vaucouleurs fit ellipt, g band (1-deVAB_g) (src.ellipticity)
gPA 0.2 deg Position angle of dVrad in g band (deVPhi_g) (pos.posAng)
rFlags00000018004010008010  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)
rDate2005.3534 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag17.668 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.007 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag19.020 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.018 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag17.684 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.053 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 5.88 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 1.12 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 2.31 arcsec de Vaucouleurs fit radius, r band (deVRad_r) (phys.angSize;src)
rdVell 0.568 arcsec de Vaucouleurs fit ellipt, r band (1-deVAB_r) (src.ellipticity)
rPA171.9 deg Position angle of dVrad in r band (deVPhi_r) (pos.posAng)
iFlags00000008004010008010  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)
iDate2005.3534 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag17.256 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.008 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag18.608 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.022 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag17.301 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.026 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 5.22 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.77 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.10 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE -0.02 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
idVrad 1.95 arcsec de Vaucouleurs fit radius, i band (deVRad_i) (phys.angSize;src)
idVell 0.543 arcsec de Vaucouleurs fit ellipt, i band (1-deVAB_i) (src.ellipticity)
iPA171.9 deg Position angle of dVrad in i band (deVPhi_i) (pos.posAng)
zFlags00000008004010028010  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)
zDate2005.3534 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag17.651 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.033 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag18.813 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.040 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag18.254 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.234 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 3.37 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 0.56 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA -0.03 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 1.60 arcsec de Vaucouleurs fit radius, z band (deVRad_z) (phys.angSize;src)
zdVell 0.449 arcsec de Vaucouleurs fit ellipt, z band (1-deVAB_z) (src.ellipticity)
zPA171.7 deg Position angle of dVrad in z band (deVPhi_z) (pos.posAng)
pmRA -3 mas/yr Proper motion along RightAscension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
e_pmRA 2 mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDE 10 mas/yr Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
e_pmDE 2 mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA 0.074 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.625 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)17.2 mag Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E)17.4 mag Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J)16.3 mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)16.4 mag Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N)16.6 mag Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
  
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