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VizieR

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J/ApJS/219/39/cand QSOs selection from SDSS and WISE (Richards+, 2015)
*Optical+MIR photometric quasar candidates catalog (table 2) (885503 rows)
  recno=818657
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ColumnValue  Explain   (UCD)
_RAJ200022 33 11.71873 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (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.eq.ra)
_DEJ2000+22 27 25.9850 "d:m:s" Declination (FK5, Equinox=J2000.0) (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.eq.dec)
_RAB195022 30 48.21581 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (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.eq.ra)
_DEB1950+22 11 56.9967 "d:m:s" Declination (FK4, Equinox=B1950.0) (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.eq.dec)
_Glon085.58447065 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-30.20954958 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)
818657recno 818657  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ2000338.298828 deg (i) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+22.457218 deg (i) Declination (J2000) (pos.eq.dec;meta.main)
ClassU  Spectral classification (QSO, GALAXY, STAR, CELG, ??, or U) (Note 1)   (src.class)
zsp    [0/6.7] Spectroscopic redshift (src.redshift)
umag19.447 mag [15/31.7] SDSS u-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.U)
e_umag 0.022 mag [0.003/99.99] Error on u-band magnitude (stat.error;phot.mag;em.opt.U)
gmag18.958 mag [15/27.4] SDSS g-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.B)
e_gmag 0.010 mag [0.003/44] Error on g-band magnitude (stat.error;phot.mag;em.opt.B)
rmag19.123 mag [15/25.9] SDSS r-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.R)
e_rmag 0.012 mag [0.002/18] Error on r-band magnitude (stat.error;phot.mag;em.opt.R)
imag18.917 mag [14.9/25] SDSS i-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.I)
e_imag 0.012 mag [0.002/21] Error on i-band magnitude (stat.error;phot.mag;em.opt.I)
zmag18.940 mag [15/24.5] SDSS z-band AB magnitude, corrected for Galactic extinction (phot.mag;em.opt.I)
e_zmag 0.031 mag [0.003/16] Error on z-band magnitude (stat.error;phot.mag;em.opt.I)
3.6mag17.566 mag [12.8/23.8] 3.6um AB magnitude, corrected for Galactic extinction (phot.mag;em.IR.3-4um)
e_3.6mag 0.034 mag [0.02/0.7] Error on 3.6um magnitude (stat.error)
4.5mag17.226 mag [12.5/24.2] 4.5um AB magnitude, corrected for Galactic extinction (phot.mag;em.IR.4-8um)
e_4.5mag 0.037 mag [0.01/0.7] Error on 4.5um magnitude (stat.error)
Fu 13.79 3.63uJy [-101/810] SDSS u-band flux density in nanomaggies (phot.mag;em.opt.U)
e_Fu 0.28 3.63uJy [0.04/100] Error in u-band flux density (stat.error)
Fg 22.56 3.63uJy [-1/759] SDSS g-band flux density in nanomaggies (phot.mag;em.opt.B)
e_Fg 0.22 3.63uJy [0.02/54] Error in g-band flux density (stat.error)
Fr 20.27 3.63uJy [-0.3/805] SDSS r-band flux density in nanomaggies (phot.mag;em.opt.R)
e_Fr 0.22 3.63uJy [0.03/86] Error in r-band flux density (stat.error)
Fi 25.14 3.63uJy [-0.3/979] SDSS i-band flux density in nanomaggies (phot.mag;em.opt.I)
e_Fi 0.29 3.63uJy [0.04/163] Error in i-band flux density (stat.error)
Fz 25.08 3.63uJy [-4/945] SDSS z-band flux density in nanomaggies (phot.mag;em.opt.I)
e_Fz 0.72 3.63uJy [0.1/129] Error in z-band flux density (stat.error)
F3.6 338.84 uJy [1.1/25966] 3.6um flux density in microJy (phot.mag;em.IR.3-4um)
e_F3.6 10.61 uJy [0.09/551] Error in 3.6um flux density (stat.error)
F4.5 463.45 uJy [0.8/35613] 4.5um flux density in microJy (phot.mag;em.IR.4-8um)
e_F4.5 15.79 uJy [0.1/656] Error in 4.5um flux density (stat.error)
Ymag  mag [14.6/26] Y-band Vega magnitude from UKIDSS or VHS (Note 2)   (phot.mag;em.IR.J)
e_Ymag  mag [0.003/46] Error in Y-band magnitude (stat.error;phot.mag;em.opt.B)
Jmag  mag [13.9/21] J-band Vega magnitude from UKIDSS or VHS (Note 2)   (phot.mag;em.IR.J)
e_Jmag  mag [0.002/0.5] Error in J-band magnitude (stat.error;phot.mag;em.IR.J)
Hmag  mag [13.2/20.3] H-band Vega magnitude from UKIDSS or VHS (Note 2)   (phot.mag;em.IR.H)
e_Hmag  mag [0.002/0.6] Error in H-band magnitude (stat.error;phot.mag;em.IR.H)
Kmag  mag [11.8/19.6] K-band Vega magnitude from UKIDSS or VHS (Note 2)   (phot.mag;em.IR.K)
e_Kmag  mag [0.001/0.7] Error in K-band magnitude (stat.error;phot.mag;em.IR.K)
FUV20.518 mag [13.7/24.8] GALEX FUV magnitude (AB) (phot.mag;em.UV.100-200nm)
e_FUV 0.232 mag [0.008/0.6] Error in FUV magnitude (stat.error)
NUV19.744 mag [13.8/24.8] GALEX NUV magnitude (AB) (phot.mag;em.UV)
e_NUV 0.078 mag [0.004/0.5] Error in NUV magnitude (stat.error)
gisig-0.9   [-1/1] Indicator of distance from mean g-i color at ZHOTBEST (GI_SIGMA) (stat.fit.param)
Au 0.25 mag [0.01/1] Extinction in SDSS u band (phys.absorption)
den* 0.14   [0/1.2] Star density from KDE algorithm (stat.fit.param)
denq 0.20   [0/402] Quasar density from KDE algorithm (stat.fit.param)
b_zphO 0.460   [0/100] Minimum photometric redshift [ugriz] (src.redshift.phot;stat.min)
zphO 0.535   [0.005/100] Best photometric redshift [ugriz] (ZPHOTBEST) (src.redshift.phot)
B_zphO 0.670   [0.01/100] Maximum photometric redshift [ugriz] (src.redshift.phot;stat.max)
zphOP 0.953   [0.005/100] Probability of ZPHOTBEST being between min and max (ZPHOTPROB) (stat.fit.goodness)
b_zphIR    [0/6] Minimum photometric redshift [ugrizJHK] (src.redshift.phot;stat.min)
zphIR    [0.05/6.3] Best photometric redshift (ugrizJHK) (ZPHOTBESTJHK) (src.redshift.phot)
B_zphIR    [0.02/6.3] Maximum photometric redshift (ugrizJHK) (ZPHOTMAXJHK) (src.redshift.phot;stat.max)
zphIRP    [0.2/1] Probability of ZPHOTBESTJHK being between min and max (ZPHOTPROBJHK) (stat.fit.goodness)
Leg1   [0/1] Indicates if object is in the SDSS Legacy footprint (meta.code)
Uni0   [0/1] Indicates if object was selected according to Richards et al. (2002AJ....123.2945R) (meta.code)
Prim 1048579   [0/673192456] SDSS primary target selection flag; see Richards et al. (2002AJ....123.2945R) (meta.code)
pm 7.417 mas/yr [0.005/193] Proper motion in milliarcseconds per year (pos.pm)
DB3   [1/7] Bitwise flag indicating low-z (20), mid-z (21), and high-z (22) sources (meta.code)

SloanSloan  Display the online SDSS data for the nearest object (meta.ref.url)
  
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