VizieR

CfA VizieR . ADAC VizieR . CADC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . Beijing (Ch) VizieR .

VizieR

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VII/289/dr16q SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
The SDSS quasar-only catalog from DR16 (DR16Q) (original column names in green) (750414 rows)
  recno=139436
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ColumnValue  Explain   (UCD)
_RAJ200002 59 53.34887 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+00 02 52.1300 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195002 57 19.64739 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-00 09 00.8388 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon176.87966618 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-48.88941216 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)
139436recno 139436  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SDSS_NAME025953.34+000252.1  (i) SDSS-DR16 designation (HHMMSS.ss+DDMMSS.s; J2000) (SDSS_NAME) (meta.id;meta.main)
RA044.972287 deg (i) Right Ascension (J2000) (RA) (pos.eq.ra;meta.main)
DEC+00.047814 deg (i) [-17.53/84.44] Declination (J2000) (DEC) (pos.eq.dec;meta.main)
Plate 7820  Spectroscopic plate number (Note G1)   (obs.field)
MJD56984  (i) [51608/58543] Spectroscopic Modified Julian Date (Note G1)   (time.epoch)
FIBERID 19  Spectroscopic fiber number (FIBERID) (Note G1)   (meta.number;pos.parallax.spect)
AUTOCLASS_PQNQSO  Object classification post-QuasarNET (Busca & Balland 2018arXiv180809955B) (AUTOCLASS_PQN) (Note 1)   (meta.code)
AUTOCLASS_DR14QVI  Object classification based only on the DR14Q algorithm (AUTOCLASS_DR14Q) (meta.code.class;src.class)
IS_QSO_QN 1  Binary flag for QuasarNET quasar identification (1=QSO; -1=not processed by QuasarNET) (IS_QSO_QN) (meta.code)
Z_QN 1.542584   [-0.4/6.51] Redshift derived by QuasarNET (Z_QN) (src.redshift;pos.heliocentric)
RANDOM_SELECT0   [0/1] Binary flag indicating objects selected for random visual inspection (0=not selected) (RANDOM_SELECT) (Note G2)   (meta.code)
Z_10K    [0.1/4.3] Redshift from visual inspection of random set (Z_10K) (src.redshift;pos.heliocentric)
Z_CONF_10K-1   [-1/3] Confidence rating for visual inspection redshift of random set (3:highest confidence) (Z_CONF_10K) (Note G3)   (meta.code)
PIPE_CORR_10K-1  Binary flag indicating if the automated pipeline classification and redshift were correct in the random set (PIPE_CORR_10K) (Note G4)   (meta.code)
IS_QSO_10K-1  Binary flag for random set quasar identification (1=QSO; -1=not randomly selected) (IS_QSO_10K) (meta.code)
THING_ID 97117330   SDSS identifier mainly for BOSS and eBOSS objects (THING_ID) (meta.id)
Z_VI    [0.001/7.02] Redshift from visual inspection (Z_VI) (src.redshift;pos.heliocentric)
Z_CONF 0   [-1/3] Confidence rating for visual inspection redshift (3: highest confidence) (Z_CONF) (meta.code)
CLASS_PERSON 0   [0/50] Object classification from visual inspection (CLASS_PERSON) (Note 2)   (meta.code.class;src.class)
Z_DR12Q    [0.04/6.5] Redshift taken from DR12Q (Cat. VII/279) visual inspection (Z_DR12Q) (src.redshift;pos.heliocentric)
IS_QSO_DR12Q 0  Flag indicating if an object was a quasar in DR12Q (1=QSO) (IS_QSO_DR12Q) (meta.code)
Z_DR7Q_SCH    [0.06/5.47] Redshift taken from DR7Q (Cat. VII/260) catalog (Z_DR7Q_SCH) (src.redshift;pos.heliocentric)
IS_QSO_DR7Q-1  Flag indicating if an object was a quasar in DR7Q (IS_QSO_DR7Q) (meta.code)
Z_DR6Q_HW    [0.07/5.5] Redshift taken from DR6 (Hewett & Wild, 2010, J/MNRAS/405/2302) (Z_DR6Q_HW) (src.redshift;pos.heliocentric)
Z_DR7Q_HW    [0.06/5.5] Redshift taken from DR7 (Shen+ 2011, J/ApJS/194/45) catalog ancillary columns (Z_DR7Q_HW) (Note G5)   (src.redshift;pos.heliocentric)
IS_QSO_FINAL1   [1/2] Flag indicating quasars included in final catalog (1=QSO; 2=questionable – see Section 3.6) (IS_QSO_FINAL) (meta.code)
z 1.532223   [-0.0027/7.03] Best available redshift (src.redshift;pos.heliocentric)
SOURCE_ZPIPE  Source for redshift z (SOURCE_Z) (Note 3)   (meta.ref;pos.frame)
Z_PIPE 1.532223   [-0.0084/7.05] Redshift from SDSS pipeline version v5130 (Z_PIPE) (src.redshift;pos.heliocentric)
ZWARNING 4   [-1/68] Quality flag on SDSS pipeline redshift estimate (ZWARNING) (G6) Binary flag (Note)   (meta.code.qual)
objID1237663784217084219  SDSS object identification number (sky version, run, rerun, camera column, field number, and ID) (Note G7)   (meta.id)
Z_PCA 1.532482   [-1008/7.3] PCA redshift derived by the redvsblue algorithm (Z_PCA) (src.redshift;pos.heliocentric)
ZWARN_PCA 0   [0/1056] Warning flag for redvsblue redshift (ZWARN_PCA) (G6) Binary flag (Note)   (meta.code.qual)
DELTACHI2_PCA 6.49183e+01   [7/3.31e+7] Δχ2 for PCA redshift versus cubic continuum fit (DELTACHI2_PCA) (stat.fit.chi2)
Z_HALPHA    [-0.015/0.53] PCA line redshift for Hα from redvsblue (Z_HALPHA) (src.redshift;pos.heliocentric)
ZWARN_HALPHA7682   [0/7682] Warning flag for Hα (ZWARN_HALPHA) (G6) Binary flag (Note)   (meta.code.qual)
DELTACHI2_HALPHA 0.00000e+00   [0/2.2e+6] Δχ2 for Hα line redshift versus cubic continuum fit (DELTACHI2_HALPHA) (stat.fit.chi2)
Z_HBETA    [-0.02/1.1] PCA line redshift for Hβ from redvsblue (Z_HBETA) (src.redshift;pos.heliocentric)
ZWARN_HBETA7682   [0/7682] Warning flag for Hβ (ZWARN_HBETA) (G6) Binary flag (Note)   (meta.code.qual)
DELTACHI2_HBETA 0.00000e+00   [0/525536] Δχ2 for Hβ line versus cubic continuum fit (DELTACHI2_HBETA) (stat.fit.chi2)
Z_MGII 1.539784   [0.28/2.6] PCA line redshift for MgII from redvsblue (Z_MGII) (src.redshift;pos.heliocentric)
ZWARN_MGII 0   [0/7682] Warning flag for MgII (ZWARN_MGII) (G6) Binary flag (Note)   (meta.code.qual)
DELTACHI2_MGII 1.66088e+01   [0/384079] Δχ2 for MgII line redshift versus cubic continuum fit (DELTACHI2_MGII) (stat.fit.chi2)
Z_CIII 1.559200   [0.8/4.3] PCA line redshift for CIII] from redvsblue (Z_CIII) (src.redshift;pos.heliocentric)
ZWARN_CIII 0   [0/7682] Warning flag for CIII] (ZWARN_CIII) (G6) Binary flag (Note)   (meta.code.qual)
DELTACHI2_CIII 2.18373e+01   [0/547655] Δχ2 for CIII] line redshift versus cubic continuum fit (DELTACHI2_CIII) (stat.fit.chi2)
Z_CIV 1.531942   [1.3/5.5] PCA line redshift for CIV from redvsblue (Z_CIV) (src.redshift;pos.heliocentric)
ZWARN_CIV 0   [0/7682] Warning flag for CIV (ZWARN_CIV) (G6) Binary flag (Note)   (meta.code.qual)
DELTACHI2_CIV 2.36593e+01   [0/5.5e+6] Δχ2 for CIV line redshift versus cubic continuum fit (DELTACHI2_CIV) (stat.fit.chi2)
Z_LYA    [1.9/7.3] PCA line redshift for Lyα from redvsblue (Z_LYA) (src.redshift;pos.heliocentric)
ZWARN_LYA7682   [0/7682] Warning flag for Lyα (ZWARN_LYA) (G6) Binary flag (Note)   (meta.code.qual)
DELTACHI2_LYA 0.00000e+00   [0/4.5e+6] Δχ2 for Lyα line redshift versus cubic continuum fit (DELTACHI2_LYA) (stat.fit.chi2)
Z_LYAWG 1.532482   [0.03/4] PCA redshift derived from spectra masked blueward of Lyα (Z_LYAWG) (src.redshift;pos.heliocentric)
Z_DLA1    [1.9/6.2] Redshift for damped Lyα feature 1 (Z_DLA1) (src.redshift;pos.heliocentric)
Z_DLA2    [2/5.2] Redshift for damped Lyα feature 2 (Z_DLA2) (src.redshift;pos.heliocentric)
Z_DLA3    [2.1/4.9] Redshift for damped Lyα feature 3 (Z_DLA3) (src.redshift;pos.heliocentric)
Z_DLA4    [2.4/3.7] Redshift for damped Lyα feature 4 (Z_DLA4) (src.redshift;pos.heliocentric)
Z_DLA5    [2.8/3.3] Redshift for damped Lyα feature 5 (Z_DLA5) (src.redshift;pos.heliocentric)
NHI_DLA1  [-] [20.3/22] Absorber column density for damped Lyα feature 1 (NHI_DLA1) (phys.columnDensity)
NHI_DLA2  [-] [20.3/21.8] Absorber column density for damped Lyα feature 2 (NHI_DLA2) (phys.columnDensity)
NHI_DLA3  [-] [20.3/21.4] Absorber column density for damped Lyα feature 3 (NHI_DLA3) (phys.columnDensity)
NHI_DLA4  [-] [20.3/21.1] Absorber column density for damped Lyα feature 4 (NHI_DLA4) (phys.columnDensity)
NHI_DLA5  [-] [20.5/20.6] Absorber column density for damped Lyα feature 5 (NHI_DLA5) (phys.columnDensity)
CONF_DLA1-1.0000  Confidence of detection for damped Lyα feature 1 (CONF_DLA1) (meta.code)
CONF_DLA2-1.0000  Confidence of detection for damped Lyα features (CONF_DLA2) (meta.code)
CONF_DLA3-1.0000  Confidence of detection for damped Lyα features (CONF_DLA3) (meta.code)
CONF_DLA4-1.0000  Confidence of detection for damped Lyα features (CONF_DLA4) (meta.code)
CONF_DLA5-1.0000  Confidence of detection for damped Lyα features (CONF_DLA5) (meta.code)
BAL_PROB-1.000000   [-1/1] BAL probability (BAL_PROB) (Note G8)   (stat.fit.goodness)
BI_CIV  km/s [/109061] BALnicity index for the CIV region (BI_CIV) (spect.line.eqWidth)
ERR_BI_CIV  km/s [0/3.1e+38] BI(CIV) uncertainty (ERR_BI_CIV) (stat.error)
AI_CIV  km/s [-618/121609] Absorption index for the CIV region (AI_CIV) (spect.index)
ERR_AI_CIV  km/s [0/10897] AI(CIV) uncertainty (ERR_AI_CIV) (stat.error)
BI_SIIV  km/s [/85220] BALnicity index for the SiIV region (BI_SIIV) (spect.line.eqWidth)
ERR_BI_SIIV  km/s [0/1985] BI(SIIV) uncertainty (ERR_BI_SIIV) (stat.error)
AI_SIIV  km/s [/45671] Absorption index for the SiIV region (AI_SIIV) (spect.index)
ERR_AI_SIIV  km/s [0/1622] AI(SIIV) uncertainty (ERR_AI_SIIV) (stat.error)
BOSS_TARGET1 0  BOSS target selection flag for the main survey (BOSS_TARGET1) Binary flag (meta.code)
EBOSS_TARGET0 0  eBOSS target selection flag for the pilot survey (SEQUELS) (EBOSS_TARGET0) Binary flag (meta.code)
EBOSS_TARGET1 512  eBOSS target selection flag for the main survey (EBOSS_TARGET1) Binary flag (meta.code)
EBOSS_TARGET2 0  eBOSS target 2 selection flag for the main survey (EBOSS_TARGET2) Binary flag (meta.code)
ANCILLARY_TARGET1 0  BOSS target selection flag for the ancillary surveys (ANCILLARY_TARGET1) Binary flag (meta.code)
ANCILLARY_TARGET2 0  BOSS target 2 selection flag for the ancillary surveys (ANCILLARY_TARGET2) (meta.code)
NSPEC_SDSS0   [0/1] Number of additional spectra from SDSS-I/II (NSPEC_SDSS) (Note G9)   (meta.number)
NSPEC_BOSS 0   [0/73] Number of additional spectra from BOSS/eBOSS (NSPEC_BOSS) (Note G9)   (meta.number)
NSPEC 0   [0/73] Total number of additional spectra (NSPEC) (Note G9)   (meta.number)
SKYVERSION2   [2] SDSS photometric sky version number (SKYVERSION) (meta.number)
RUN_NUMBER4263   [94/8162] SDSS imaging run number of photometric measurements (RUN_NUMBER) (meta.id)
RERUN_NUMBER301   [157/301] SDSS photometric processing rerun number (RERUN_NUMBER) (meta.id)
CAMCOL_NUMBER4   [1/6] SDSS camera column number (CAMCOL_NUMBER) (meta.id)
FIELD_NUMBER416   [11/872] SDSS field number (FIELD_NUMBER) (meta.id;obs.field)
ID_NUMBER 315   [2/4093] SDSS photometric ID (ID_NUMBER) (meta.id;phot)
LAMBDA_EFF4000 0.1nm [4000/7500] Wavelength for which the fiber placement was optimized to account for atmospheric differential refraction (Dawson+ 2013AJ....145...10D), in Å (LAMBDA_EFF) (em.wl)
ZOFFSET 0.000000 um [0/300] Backstopping offset distance (ZOFFSET) (pos.distance;instr.offset;arith.diff)
Xfocal 194.517380 mm [-325/325] Hole x-axis position in focal plane (pos.cartesian.x;instr.plate)
Yfocal 23.681492 mm [-325/326] Hole y-axis position in focal plane (pos.cartesian.y;instr.plate)
Chunkeboss2  Name of tiling chunk (from the plate-list product) (obs.field)
Tile 16280   [-3/17691] Tile number (obs.field)
PLATESN2 17.547300   [0/334] Overall (S/N)2 measure for plate, minimum of all four cameras (PLATESN2) (stat.snr)
PSFFLUXu 1.101597 3.63uJy [-45/2001] PSF flux in u-band in nMgy (not corrected for Galactic extinction) (PSFFLUXu) (phot.mag;em.opt.U)
PSFFLUXg 0.953357 3.63uJy [-0.3/1756] PSF flux in g-band in nMgy (not corrected for Galactic extinction) (PSFFLUXg) (phot.mag;em.opt.B)
PSFFLUXr 1.009158 3.63uJy [-0.6/1646] PSF flux in r-band in nMgy (not corrected for Galactic extinction) (PSFFLUXr) (phot.mag;em.opt.R)
PSFFLUXi 1.267722 3.63uJy [-31/2324] PSF flux in i-band in nMgy (not corrected for Galactic extinction) (PSFFLUXi) (phot.mag;em.opt.I)
PSFFLUXz -0.921612 3.63uJy [-3.2/1777] PSF flux in z-band in nMgy (not corrected for Galactic extinction) (PSFFLUXz) (phot.mag;em.opt.I)
PSFFLUX_IVARu 27.425587 3.63uJy [0/233] Inverse variance of Fu in nMgy (PSFFLUX_IVARu) (phot.mag;em.opt.U)
PSFFLUX_IVARg 123.288506 3.63uJy [0/643] Inverse variance of Fg in nMgy (PSFFLUX_IVARg) (phot.mag;em.opt.B)
PSFFLUX_IVARr 81.845299 3.63uJy [0/160] Inverse variance of Fr in nMgy (PSFFLUX_IVARr) (phot.mag;em.opt.R)
PSFFLUX_IVARi 39.870365 3.63uJy [0/74] Inverse variance of Fi in nMgy (PSFFLUX_IVARi) (phot.mag;em.opt.I)
PSFFLUX_IVARz 1.674024 3.63uJy [0/9] Inverse variance of Fz in nMgy (PSFFLUX_IVARz) (phot.mag;em.opt.I)
PSFMAGu 22.3778 mag [14.2/31] PSF (AB) magnitude in u band (not corrected for Galactic extinction) (PSFMAGu) (phot.mag;em.opt.U)
PSFMAGg 22.5423 mag [14.3/26.4] PSF (AB) magnitude in g band (not corrected for Galactic extinction) (PSFMAGg) (phot.mag;em.opt.B)
PSFMAGr 22.4751 mag [14.4/26.6] PSF (AB) magnitude in r band (not corrected for Galactic extinction) (PSFMAGr) (phot.mag;em.opt.R)
PSFMAGi 22.2212 mag [14/30] PSF (AB) magnitude in i band (not corrected for Galactic extinction) (PSFMAGi) (phot.mag;em.opt.I)
PSFMAGz 23.4656 mag [14.3/24.5] PSF (AB) magnitude in z band (not corrected for Galactic extinction) (PSFMAGz) (src.redshift;pos.heliocentric)
PSFMAGERRu 1.82402e-01 mag [0.007/2.7e+6] umag uncertainty (PSFMAGERRu) (stat.error;phot.mag)
PSFMAGERRg 1.00786e-01 mag [0.007/38] gmag uncertainty (PSFMAGERRg) (stat.error;phot.mag)
PSFMAGERRr 1.15697e-01 mag [0.005/26] rmag uncertainty (PSFMAGERRr) (stat.error;phot.mag)
PSFMAGERRi 1.30477e-01 mag [0.006/2.4e+6] imag uncertainty (PSFMAGERRi) (stat.error;phot.mag)
PSFMAGERRz 4.81308e-01 mag [0.008/114] zmag uncertainty (PSFMAGERRz) (stat.error;phot.mag)
EXTINCTIONu 0.369183 mag [0.009/3.8] Galactic extinction in the u-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONu) (phys.absorption)
EXTINCTIONg 0.287665 mag [0.007/2.8] Galactic extinction in the g-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONg) (phys.absorption)
EXTINCTIONr 0.199005 mag [0.005/2.1] Galactic extinction in the r-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONr) (phys.absorption)
EXTINCTIONi 0.147882 mag [0.003/1.6] Galactic extinction in the i-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONi) (phys.absorption)
EXTINCTIONz 0.109997 mag [0.002/1.1] Galactic extinction in the z-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONz) (phys.absorption)
M_I-22.9673 mag [-31.4/2] Absolute i-band magnitude, Mi[z=2] using zPCA redshift, corrected for extinction (M_I) (Note 4)   (phys.magAbs)
SN_MEDIAN_ALL 1.5116   [-1.6/77] S/N median value for all good pixels in the five bands (SN_MEDIAN_ALL) (stat.snr)
GALEX_MATCHED1  GALEX matching flag (1=match) (GALEX_MATCHED) (meta.code)
FUV 0.0400 3.63uJy [-1.4/1318] FUV flux for GALEX in nMgy (FUV) (phot.flux;em.UV)
FUV_IVAR 16.9433 3.63uJy [-1/68408] Inverse variance of FFUV in nMgy (FUV_IVAR) (phot.flux;em.UV)
NUV 0.1773 3.63uJy [-1.3/1235] NUV flux for GALEX in nMgy (NUV) (phot.flux;em.UV)
NUV_IVAR 46.9819 3.63uJy Inverse variance of the NUV flux in nMgy (NUV_IVAR) (phot.flux;em.UV)
UKIDSS_MATCHED0  UKIDSS DR8 matching flag (UKIDSS_MATCHED) (meta.code)
YFLUX  W/m2/Hz [-5e-30/1.2e-29] Y-band flux density from UKIDSS (YFLUX) (phot.flux.density;em.IR)
YFLUX_ERR  W/m2/Hz [5.8e-33/6.7e-30] FY uncertainty (YFLUX_ERR) (stat.error)
JFLUX  W/m2/Hz J-band flux density from UKIDSS (JFLUX) (phot.flux.density;em.IR.J)
JFLUX_ERR  W/m2/Hz FJ uncertainty (JFLUX_ERR) (stat.error)
HFLUX  W/m2/Hz H-band flux density from UKIDSS (HFLUX) (phot.flux.density;em.IR.H)
HFLUX_ERR  W/m2/Hz FH uncertainty (HFLUX_ERR) (stat.error)
KFLUX  W/m2/Hz K-band flux density from UKIDSS (KFLUX) (phot.mag;em.IR.K)
KFLUX_ERR  W/m2/Hz FK uncertainty (KFLUX_ERR) (stat.error)
W1_FLUX 8.98030e+01 309.05nJy [-84770/197356] WISE flux in the W1 band (3.4um; Vega, nanomaggies) (W1_FLUX) (Note 5)   (phot.mag;em.IR.3-4um)
W1_FLUX_IVAR 6.68902e-03 309.05nJy-2 [4.5e-6/0.14] Inverse variance of FW1 (Vega, nanomaggies–2) (W1_FLUX_IVAR) (phot.mag;em.IR.3-4um)
W1_MAG17.6168 mag [9.2/31.2] WISE W1-band magnitude (Vega) (W1_MAG) (phot.mag;em.IR.3-4um)
W1_MAG_ERR 0.1478 mag [0.0001/52540] W1mag uncertainty (W1_MAG_ERR) (stat.error;phot.mag)
W1_CHI2 6.65783e-01   [-1/1.2e+6] Profile-weighted ξ2 for the W1 band (W1_CHI2) (stat.fit.chi2)
W1_FLUX_SNR 7.3447   [-5564/14926] Signal-to-noise ratio for the W1 band from the flux and inverse variance (W1_FLUX_SNR) (stat.snr)
W1_SRC_FRAC 0.840198   [-1/1] Fraction of source in profile-weighted fit (W1_SRC_FRAC) (stat.fit.omc)
W1_EXT_FLUX 6.82400e+00   [-12060/6841] Amount of flux added to the profile by nearby sources (W1_EXT_FLUX) (stat.fit.omc)
W1_EXT_FRAC 0.075989   [-205/2488] Fraction of profile flux from nearby sources (W1_EXT_FRAC) (stat.fit.omc)
W1_NPIX 32   [-1/3817] Number of pixels included in the profile fit (W1_NPIX) (meta.number)
W2_FLUX 1.49901e+02 167.66nJy [-127664/527681] WISE flux in the W2 band (4.6um; Vega, nanomaggies) (W2_FLUX) (phot.mag;em.IR.4-8um)
W2_FLUX_IVAR 0.000446 167.66nJy-2 [0/0.011] Inverse variance of FW2 (Vega, nanomaggies–2) (W2_FLUX_IVAR) (phot.mag;em.IR.4-8um)
W2_MAG17.0605 mag [8.1/31.4] WISE W2-band magnitude (Vega) (W2_MAG) (phot.mag;em.IR.4-8um)
W2_MAG_ERR 0.3431 mag [0.0002/245404] W2mag uncertainty (W2_MAG_ERR) (stat.error;phot.mag)
W2_CHI2 8.44815e-01   [-1/114995] Profile-weighted ξ2 for the W2 band (W2_CHI2) (stat.fit.chi2)
W2_FLUX_SNR 3.1643   [-2241/6734] Signal-to-noise ratio for the W2 band from flux and inverse variance (W2_FLUX_SNR) (stat.snr)
W2_SRC_FRAC 0.849880   [-1/1] Fraction of source in the profile-weighted fit (W2_SRC_FRAC) (stat.fit.omc)
W2_EXT_FLUX 1.22450e+01   [-9089/6580] Amount of flux added to the profile by nearby sources (W2_EXT_FLUX) (stat.fit.omc)
W2_EXT_FRAC 0.081687   [-9.7/12145] Fraction of profile flux from nearby sources (W2_EXT_FRAC) (stat.fit.omc)
W2_NPIX 34   [-1/3306] Number of pixels included in the profile fit (W2_NPIX) (meta.number)
FIRST_MATCHED0  Matching flag for FIRST (FIRST_MATCHED) (meta.code)
FIRST_FLUX  mJy [0.75/14775] FIRST peak flux density at 20cm (FIRST_FLUX) (phot.flux.density;em.radio.750-1500MHz)
FIRST_SNR    [5/21190] FIRST flux density S/N (FIRST_SNR) (stat.snr)
SDSS2FIRST_SEP  arcsec [/2] SDSS-FIRST separation (SDSS2FIRST_SEP) (pos;arith.diff)
Jmag  mag [13/19] 2MASS (Vega) J-band magnitude (phot.mag;em.IR.J)
JMAG_ERR  mag [0.018/3] Jmag uncertainty (JMAG_ERR) (stat.error;phot.mag)
JSNR    [2.9/215] 2MASS J-band S/N (JSNR) (stat.snr)
JRDFLAG-1   [-1/6] 2MASS J-band photometry flag (JRDFLAG) (meta.code)
Hmag  mag [12.2/18.2] 2MASS (Vega) H-band magnitude (phot.mag;em.IR.H)
HMAG_ERR  mag [0.015/0.6] Hmag uncertainty (HMAG_ERR) (stat.error;phot.mag)
HSNR    [1.9/213] 2MASS H-band S/N (HSNR) (stat.snr)
HRDFLAG-1  2MASS H-band photometry flag (HRDFLAG) (meta.code)
Kmag  mag [11.3/17.7] 2MASS (Vega) K-band magnitude (phot.mag;em.IR.K)
KMAG_ERR  mag [0.017/1] Kmag uncertainty (KMAG_ERR) (stat.error;phot.mag)
KSNR    [2.2/259] 2MASS K-band S/N (KSNR) (stat.snr)
KRDFLAG-1  2MASS K-band photometry flag (KRDFLAG) (meta.code)
SDSS2MASS_SEP  arcsec [0.002/2] SDSS-2MASS separation (SDSS2MASS_SEP) (pos;arith.diff)
2RXS   2nd ROSAT identifier ( 2RXS_ID) (meta.id.cross)
RARdeg  deg Right ascension of the ROSAT source (J2000) ( 2RXS_RA) (pos.eq.ra)
DERdeg  deg Declination of the ROSAT source (J2000) ( 2RXS_DEC) (pos.eq.dec)
F0.5-2  mW/m2 [1e-13/5.6e-11] ROSAT source flux in the 0.5-2.0keV band in erg/s/cm2 ( 2RXSSRCFLUX) (phot.flux;em.X-ray.soft)
e_F0.5-2  mW/m2 [0/3.6e-12] F0.5-2 uncertainty ( 2RXSSRCFLUX_ERR) (stat.error)
SDSS2ROSAT_SEP  arcsec [0.12/97.4] SDSS-ROSAT separation (SDSS2ROSAT_SEP) (pos;arith.diff)
XMM_SRC_ID    XMM source number (XMM_SRC_ID) (meta.id.cross)
XMM_RA  deg XMM right ascension (J2000) (XMM_RA) (pos.eq.ra)
XMM_DEC  deg XMM declination (J2000) (XMM_DEC) (pos.eq.dec)
XMM_SOFT_FLUX  mW/m2 [0/6.4e-12] XMM soft (0.2-2.0keV) X-ray flux in erg/s/cm2 (XMM_SOFT_FLUX) (phot.flux;em.X-ray)
XMM_SOFT_FLUX_ERR  mW/m2 [5.2e-17/5e-14] F0.2-2 uncertainty (XMM_SOFT_FLUX_ERR) (stat.error)
XMM_HARD_FLUX  mW/m2 [0/8.6e-12] XMM hard (2.0-12.0keV) X-ray flux in erg/s/cm2 (XMM_HARD_FLUX) (phot.flux;em.X-ray)
XMM_HARD_FLUX_ERR  mW/m2 [3.5e-16/3.3e-13] F2-12 uncertainty (XMM_HARD_FLUX_ERR) (stat.error)
XMM_TOTAL_FLUX  mW/m2 [1.8e-15/1.5e-11] XMM total (0.2-12.0keV) X-ray flux in erg/s/cm2 (XMM_TOTAL_FLUX) (phot.flux;em.X-ray)
XMM_TOTAL_FLUX_ERR  mW/m2 [5.5e-16/4.7e-13] F0.2-12 uncertainty (XMM_TOTAL_FLUX_ERR) (stat.error)
SDSS2XMM_SEP  arcsec [0.0026/12] SDSS-XMM-Newton separation (SDSS2XMM_SEP) (pos;arith.diff)
GAIA_MATCHED0   [0/1] Gaia matching flag (GAIA_MATCHED) (meta.code)
GAIA_DESIGNATION    Gaia DR2 identifier (GAIA_DESIGNATION) (meta.id.cross)
GAIA_RA  deg Gaia barycentric right ascension (J2015.5) (GAIA_RA) (pos.eq.ra)
GAIA_DEC  deg Gaia barycentric declination (J2015.5) (GAIA_DEC) (pos.eq.dec)
GAIA_PARALLAX -1.0000 mas [-25.2/14] Gaia absolute stellar parallax (J2015.5) (GAIA_PARALLAX) (pos.parallax)
GAIA_PARALLAX_ERR  mas [0/1415] Plx uncertainty (GAIA_PARALLAX_ERR) (stat.error;pos.parallax)
GAIA_PM_RA -1.000 mas/yr [-42/38.3] Gaia proper motion in RA (J2015.5) (GAIA_PM_RA) (pos.pm;pos.eq.ra)
GAIA_PM_RA_ERR  mas/yr [0/763] pmRA uncertainty (GAIA_PM_RA_ERR) (stat.error;pos.pm;pos.eq.ra)
GAIA_PM_DEC -1.000 mas/yr [-40.1/43.3] Gaia proper motion in DEC (J2015.5) (GAIA_PM_DEC) (pos.pm;pos.eq.dec)
GAIA_PM_DEC_ERR  mas/yr [0/725] pmDE uncertainty (GAIA_PM_DEC_ERR) (stat.error;pos.pm;pos.eq.dec)
GAIA_G_MAG  mag [14.6/22] Gaia mean magnitude in the G band (Vega) (GAIA_G_MAG) (phot.mag;em.opt)
GAIA_G_FLUX_SNR    [5/1805] Mean flux over the standard deviation in the (Vega) G band (GAIA_G_FLUX_SNR) (stat.snr)
GAIA_BP_MAG  mag [0/23.6] Gaia mean magnitude in the (Vega) BP band (GAIA_BP_MAG) (phot.mag;em.opt.B)
GAIA_BP_FLUX_SNR    [0/9423] Mean flux over the standard deviation in the (Vega) BP band (GAIA_BP_FLUX_SNR) (stat.snr)
GAIA_RP_MAG  mag [0/23.2] Gaia mean magnitude in the (Vega) RP band (GAIA_RP_MAG) (phot.mag;em.opt.R)
GAIA_RP_FLUX_SNR    [0/39131] Mean flux over the standard deviation in the (Vega) RP band (GAIA_RP_FLUX_SNR) (stat.snr)
SDSS2GAIA_SEP  arcsec [0.0001/0.5] SDSS-Gaia separation (SDSS2GAIA_SEP) (pos;arith.diff)

SpSp  Display the SDSS data for this quasar (meta.ref.url)
SimbadSDSS J025953.34+000252.1  ask the Simbad data-base about this object (meta.ref.url)
  
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