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II/294/sdss7 The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
Data Release 7 (357,175,411 primary sources, plus 65,714,108 secondary sources) (65714108 rows)
  SDSS===J202628.18+311423.6
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Note: SDSS is also available from http://www.sdss.org/

ColumnValue  Explain   (UCD)
_RAJ200020 26 28.17910 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+31 14 23.6552 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195020 24 26.92249 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+31 04 29.3919 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon071.25973895 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-04.01858673 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 (357,175,411 sources), 2: secondary (65,058,969 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 the object (type) (Note 1)   (src.class)
SDSSJ202628.18+311423.6  (i) Recommended SDSS name, based on J2000 position (meta.id)
m_SDSS    [*] The asterisk indicates that 2 different SDSS objects share the same SDSS name (meta.code.multip)
R7   [3457] Release inclusion (blank for new, 3,4,5 when already included in DR3/4/5) (meta.note)
SDSS-ID6177.6.144.2935   [ 0-9.] SDSS object identifier (Note 2)   (meta.id)
objID758883070455581559  SDSS unique object identifier (2) (links to SDSS details) (Note)   (meta.id;meta.main)
SpObjID 0  Pointer to the spectrum of object, or 0 (7) (Note)   (meta.id)
parentID758883070455581558  Pointer to parent (if object deblended) (meta.id.parent)
rerun648   [40,651] Re-run number (Note 2)   (meta.code)
flags 1010020000  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00002673   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
e_RA_ICRS 0.042 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
e_DE_ICRS 0.042 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ccPos 0.02  Correlation between eRAdeg/eDEdeg (raDecCorr) (stat.correlation)
zsp    Spectroscopic redshift (when SpObjID>0) (Note 7)   (src.redshift)
e_zsp    Mean error on zsp (Note 7)   (stat.error)
umag22.665 mag (i) Model magnitude in u filter (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.635 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag18.814 mag (i) Model magnitude in g filter (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.009 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag17.202 mag (i) Model magnitude in r filter (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)
imag16.421 mag (i) Model magnitude in i filter (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.004 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag15.892 mag (i) Model magnitude in z filter (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.007 mag Mean error on zmag (err_z) (stat.error;phot.mag;em.opt.I)
uFlags 20000008008001  Detection flags, u band (flags_u) (Note 3)   (meta.code)
us1   [0,2] 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)
uDate2006.4020 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag22.665 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.635 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag22.523 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.544 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag24.369 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 3.693 mag Mean error on uPmag (petroMagErr_u) (stat.error;phot.mag)
uPrad 0.08 arcsec Petrosian radius in u band (petroRad_u) (phys.angSize;src)
e_uPrad 0.40 arcsec Mean error in uPrad (petroRadErr_u) (stat.error)
uoRA 0.11 arcsec Offset of u position along RA (offsetRa_u) (pos.angDistance)
uoDE 0.04 arcsec Offset of u position along Dec (offsetDec_u) (pos.angDistance)
uisoA  arcsec Isophotal major diameter in u band (isoA_u) (phys.angSize;em.opt.U)
uisoB  arcsec Isophotal minor diameter in u band (isoB_u) (phys.angSize;em.opt.U)
uPA  deg Position angle of uisoA in u band (isoPhi_u) (pos.posAng)
gFlags 4010008000  Detection flags, g band (flags_g) (Note 3)   (meta.code)
gs1   [0,2] 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)
gDate2006.4020 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag18.814 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.009 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag18.813 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.014 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag18.868 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.012 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 1.62 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.02 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA 0.03 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)
gisoA 7.06 arcsec Isophotal major diameter in g band (isoA_g) (phys.angSize)
gisoB 6.12 arcsec Isophotal minor diameter in g band (isoB_g) (phys.angSize)
gPA 97.0 deg Position angle of gisoA in g band (isoPhi_g) (pos.posAng)
rFlags 10004010008000  Detection flags, r band (flags_r) (Note 3)   (meta.code)
rs1   [0,2] 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)
rDate2006.4020 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag17.202 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)
rpmag17.220 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.012 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag17.244 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.005 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 1.74 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.01 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)
risoA 9.46 arcsec Isophotal major diameter in r band (isoA_r) (phys.angSize)
risoB 8.96 arcsec Isophotal minor diameter in r band (isoB_r) (phys.angSize)
rPA 99.4 deg Position angle of risoA in r band (isoPhi_r) (pos.posAng)
iFlags 4010008000  Detection flags, i band (flags_i) (Note 3)   (meta.code)
is1   [0,2] 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)
iDate2006.4020 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag16.421 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.004 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag16.404 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.013 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag16.474 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.004 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 1.56 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.01 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA 0.01 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE 0.06 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
iisoA 11.42 arcsec Isophotal major diameter in i band (isoA_i) (phys.angSize)
iisoB 10.30 arcsec Isophotal minor diameter in i band (isoB_i) (phys.angSize)
iPA 88.3 deg Position angle of iisoA in i band (isoPhi_i) (pos.posAng)
zFlags 4010028000  Detection flags, z band (flags_z) (Note 3)   (meta.code)
zs1   [0,2] 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)
zDate2006.4020 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag15.892 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.007 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag15.897 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.014 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag15.939 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.008 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 0.02 arcsec Mean error in zPrad (petroMagErr_z) (stat.error)
zoRA 0.01 arcsec Offset of z position along RA (offsetRa_z) (pos.angDistance)
zoDE -0.02 arcsec Offset of z position along Dec (offsetDec_z) (pos.angDistance)
zisoA 13.94 arcsec Isophotal major diameter in z band (isoA_z) (phys.angSize)
zisoB 8.06 arcsec Isophotal minor diameter in z band (isoB_z) (phys.angSize)
zPA126.9 deg Position angle of zisoA in z band (isoPhi_z) (pos.posAng)
pmRA 1 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 1 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 0.046 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.140 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)19.6 mag Magnitude from O plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(E)17.1 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)17.3 mag Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N)16.4 mag Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
RA_ICRS306.617415 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
DE_ICRS+31.239906 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
ObsDate2006.4020 yr Mean Observation date (time.epoch;obs;stat.mean)
Q2  Quality of the observation: 1=bad 2=acceptable 3=good 4=missing 5=hole (Note 6)   (meta.code.qual;obs.param;obs)
  
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