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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===J162128.40+215137.1
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Note: SDSS is also available from http://www.sdss.org/

ColumnValue  Explain   (UCD)
_RAJ200016 21 28.41005 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+21 51 37.1448 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195016 19 19.03546 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+21 58 39.0429 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon038.65560306 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+42.26141609 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 (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)
cl3  Type (class) of the object (type) (Note 1)   (src.class)
SDSSJ162128.40+215137.1  (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-ID4010.6.214.0511   [ 0-9.] SDSS object identifier (Note 2)   (meta.id)
objID587736977425957375  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)
parentID 0  Pointer to parent (if object deblended) (meta.id.parent)
rerun 40   [40,651] Re-run number (Note 2)   (meta.code)
flags 14000148  Photo Object Attribute flags (Note 3)   (meta.code.error)
Status00001273   [0-9A-F] Hexadecimal status (Note 4)   (meta.code)
e_RA_ICRS 0.048 arcsec Mean error on RAdeg (raErr) (stat.error;pos.eq.ra)
e_DE_ICRS 0.041 arcsec Mean error on DEdeg (decErr) (stat.error;pos.eq.dec)
ccPos-0.31  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)
umag22.485 mag (i) Model magnitude in u filter (u) (Note 5)   (phot.mag;em.opt.U)
e_umag 0.406 mag Mean error on umag (err_u) (stat.error;phot.mag;em.opt.U)
gmag20.592 mag (i) Model magnitude in g filter (g) (Note 5)   (phot.mag;em.opt.B)
e_gmag 0.030 mag Mean error on gmag (err_g) (stat.error;phot.mag;em.opt.B)
rmag19.599 mag (i) Model magnitude in r filter (r) (Note 5)   (phot.mag;em.opt.R)
e_rmag 0.020 mag Mean error on rmag (err_r) (stat.error;phot.mag;em.opt.R)
imag19.162 mag (i) Model magnitude in i filter (i) (Note 5)   (phot.mag;em.opt.I)
e_imag 0.021 mag Mean error on imag (err_i) (stat.error;phot.mag;em.opt.I)
zmag18.770 mag (i) Model magnitude in z filter (z) (Note 5)   (phot.mag;em.opt.I)
e_zmag 0.048 mag Mean error on zmag (err_z) (stat.error;phot.mag;em.opt.I)
uFlags 2000000C808149  Detection flags, u band (flags_u) (Note 3)   (meta.code)
us0   [0,2] 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)
uDate2003.4804 yr Date of observation in u band (Note 6)   (time.epoch)
u'mag22.485 mag Model magnitude in u filter (= umag) (Note 5)   (phot.mag;em.opt.U)
e_u'mag 0.406 mag Mean error on u'mag (= e_umag) (stat.error;phot.mag)
upmag22.904 mag PSF magnitude in u band (psfMag_u) (phot.mag;em.opt.U)
e_upmag 0.379 mag Mean error on upmag (psfMagErr_u) (stat.error;phot.mag)
uPmag23.142 mag Petrosian magnitude in u band (petroMag_u) (phot.mag;em.opt.U)
e_uPmag 1.548 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 0.04 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)
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 4014008048  Detection flags, g band (flags_g) (Note 3)   (meta.code)
gs0   [0,2] 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)
gDate2003.4804 yr Date of observation in g band (Note 6)   (time.epoch)
g'mag20.592 mag Model magnitude in g filter (= gmag) (Note 5)   (phot.mag;em.opt.B)
e_g'mag 0.030 mag Mean error on g'mag (= e_gmag) (stat.error;phot.mag;em.opt.B)
gpmag21.100 mag PSF magnitude in g band (psfMag_g) (phot.mag;em.opt.B)
e_gpmag 0.036 mag Mean error on gpmag (psfMagErr_g) (stat.error;phot.mag)
gPmag20.564 mag Petrosian magnitude in g band (petroMag_g) (phot.mag;em.opt.B)
e_gPmag 0.054 mag Mean error on gPmag (petroMagErr_g) (stat.error;phot.mag)
gPrad 2.40 arcsec Petrosian radius in g band (petroMagErr_g) (phys.angSize;src)
e_gPrad 0.30 arcsec Mean error in gPrad (petroMagErr_g) (stat.error)
goRA -0.01 arcsec Offset of g position along RA (offsetRa_g) (pos.angDistance)
goDE -0.03 arcsec Offset of g position along Dec (offsetDec_g) (pos.angDistance)
gisoA 5.38 arcsec Isophotal major diameter in g band (isoA_g) (phys.angSize)
gisoB 4.67 arcsec Isophotal minor diameter in g band (isoB_g) (phys.angSize)
gPA131.7 deg Position angle of gisoA in g band (isoPhi_g) (pos.posAng)
rFlags 10004014008048  Detection flags, r band (flags_r) (Note 3)   (meta.code)
rs0   [0,2] 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)
rDate2003.4804 yr Date of observation in r band (Note 6)   (time.epoch)
r'mag19.599 mag Model magnitude in r filter (= rmag) (Note 5)   (phot.mag;em.opt.R)
e_r'mag 0.020 mag Mean error on r'mag (= e_rmag) (stat.error;phot.mag;em.opt.R)
rpmag20.179 mag PSF magnitude in r band (psfMag_r) (phot.mag;em.opt.R)
e_rpmag 0.030 mag Mean error on rpmag (psfMagErr_r) (stat.error;phot.mag)
rPmag19.623 mag Petrosian magnitude in r band (petroMag_r) (phot.mag;em.opt.R)
e_rPmag 0.034 mag Mean error on rPmag (petroMagErr_r) (stat.error;phot.mag)
rPrad 2.00 arcsec Petrosian radius in r band (petroMagErr_r) (phys.angSize;src)
e_rPrad 0.14 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 7.33 arcsec Isophotal major diameter in r band (isoA_r) (phys.angSize)
risoB 5.80 arcsec Isophotal minor diameter in r band (isoB_r) (phys.angSize)
rPA 20.7 deg Position angle of risoA in r band (isoPhi_r) (pos.posAng)
iFlags 4014008048  Detection flags, i band (flags_i) (Note 3)   (meta.code)
is0   [0,2] 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)
iDate2003.4804 yr Date of observation in i band (Note 6)   (time.epoch)
i'mag19.162 mag Model magnitude in i filter (= imag) (Note 5)   (phot.mag;em.opt.I)
e_i'mag 0.021 mag Mean error on i'mag (= e_imag) (stat.error;phot.mag;em.opt.I)
ipmag19.750 mag PSF magnitude in i band (psfMag_i) (phot.mag;em.opt.I)
e_ipmag 0.026 mag Mean error on ipmag (psfMagErr_i) (stat.error;phot.mag)
iPmag19.204 mag Petrosian magnitude in i band (petroMag_i) (phot.mag;em.opt.I)
e_iPmag 0.038 mag Mean error on iPmag (petroMagErr_i) (stat.error;phot.mag)
iPrad 1.97 arcsec Petrosian radius in i band (petroMagErr_i) (phys.angSize;src)
e_iPrad 0.14 arcsec Mean error in iPrad (petroMagErr_i) (stat.error)
ioRA -0.02 arcsec Offset of i position along RA (offsetRa_i) (pos.angDistance)
ioDE -0.01 arcsec Offset of i position along Dec (offsetDec_i) (pos.angDistance)
iisoA 7.27 arcsec Isophotal major diameter in i band (isoA_i) (phys.angSize)
iisoB 6.91 arcsec Isophotal minor diameter in i band (isoB_i) (phys.angSize)
iPA158.9 deg Position angle of iisoA in i band (isoPhi_i) (pos.posAng)
zFlags 4014008048  Detection flags, z band (flags_z) (Note 3)   (meta.code)
zs0   [0,2] 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)
zDate2003.4804 yr Date of observation in z band (Note 6)   (time.epoch)
z'mag18.770 mag Model magnitude in z filter (= zmag) (Note 5)   (phot.mag;em.opt.I)
e_z'mag 0.048 mag Mean error on z'mag (= e_zmag) (stat.error;phot.mag;em.opt.I)
zpmag19.265 mag PSF magnitude in z band (psfMag_z) (phot.mag;em.opt.I)
e_zpmag 0.051 mag Mean error on zpmag (psfMagErr_z) (stat.error;phot.mag)
zPmag18.745 mag Petrosian magnitude in z band (petroMag_z) (phot.mag;em.opt.I)
e_zPmag 0.097 mag Mean error on zPmag (petroMagErr_z) (stat.error;phot.mag)
zPrad 2.02 arcsec Petrosian radius in z band (petroMagErr_z) (phys.angSize;src)
e_zPrad 0.44 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)
zisoA 15.60 arcsec Isophotal major diameter in z band (isoA_z) (phys.angSize)
zisoB 11.23 arcsec Isophotal minor diameter in z band (isoB_z) (phys.angSize)
zPA121.2 deg Position angle of zisoA in z band (isoPhi_z) (pos.posAng)
pmRA -5 mas/yr Proper motion along RightAscension (pmRa) (Note 8)   (pos.pm;pos.eq.ra)
e_pmRA 5 mas/yr Mean error on pmRA (pmRaErr) (Note 8)   (stat.error;pos.pm;pos.eq.ra)
pmDE 0 mas/yr Proper motion along Declination (pmDec) (Note 8)   (pos.pm;pos.eq.dec)
e_pmDE 5 mas/yr Mean error on pmDE (pmDecErr) (Note 8)   (stat.error;pos.pm;pos.eq.dec)
sigRA 0.160 arcsec RMS residual of proper motion fit in RA (Note 8)   (stat.fit.residual)
sigDE 0.262 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)
N5  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)19.7 mag Magnitude from E plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
g(J)20.8 mag Magnitude from J plate recalibrated to g (Note 8)   (phot.mag;em.opt.B)
r(F)19.7 mag Magnitude from F plate recalibrated to r (Note 8)   (phot.mag;em.opt.R)
i(N)19.4 mag Magnitude from N plate recalibrated to i (Note 8)   (phot.mag;em.opt.I)
RA_ICRS245.368370 deg (i) Right Ascension of the object (ICRS) (ra) (pos.eq.ra;meta.main)
DE_ICRS+21.860318 deg (i) Declination of the object (ICRS) (dec) (pos.eq.dec;meta.main)
ObsDate2003.4804 yr Mean Observation date (time.epoch;obs;stat.mean)
Q3  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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