VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .
CDS

VizieR

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VII/289/dr16q SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
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The SDSS quasar-only catalog from DR16 (DR16Q) (original column names in green) (750414 rows) 		  recno=269795
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ColumnValue  Explain   (UCD)
_RAJ200009 49 54.48813 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000. (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+51 48 00.9290 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000. (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)
_RAB195009 46 34.39041 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950. (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+52 02 01.8684 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950. (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)
_Glon164.21522052 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+48.15097088 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)
269795recno 269795  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
SDSS_NAME094954.48+514800.9  (i) SDSS-DR16 designation (HHMMSS.ss+DDMMSS.s; J2000) (SDSS_NAME) (meta.id;meta.main)
RA147.477034 deg (i) Right Ascension (J2000) (RA) (pos.eq.ra;meta.main)
DEC+51.800258 deg (i) [-17.53/84.44] Declination (J2000) (DEC) (pos.eq.dec;meta.main)
Plate 902  Spectroscopic plate number (Note G1)   (obs.field)
MJD52409  (i) [51608/58543] Spectroscopic Modified Julian Date (Note G1)   (time.epoch)
FIBERID 499  Spectroscopic fiber number (FIBERID) (Note G1)   (meta.number;pos.parallax.spect)
AUTOCLASS_PQNUNK  Object classification post-QuasarNET (Busca & Balland 2018arXiv180809955B) (AUTOCLASS_PQN) (Note 1)   (meta.code)
AUTOCLASS_DR14QUNK  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    [-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_ID494490097   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-1   [-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-1  Flag indicating if an object was a quasar in DR12Q (1=QSO) (IS_QSO_DR12Q) (meta.code)
Z_DR7Q_SCH 1.6496   [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 1.651886   [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 1.651692   [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 1.651886   [-0.0027/7.03] Best available redshift (src.redshift;pos.heliocentric)
SOURCE_ZDR6Q_HW  Source for redshift z (SOURCE_Z) (Note 3)   (meta.ref;pos.frame)
Z_PIPE    [-0.0084/7.05] Redshift from SDSS pipeline version v5130 (Z_PIPE) (src.redshift;pos.heliocentric)
ZWARNING -1   [-1/68] Quality flag on SDSS pipeline redshift estimate (ZWARNING) (G6) Binary flag (Note)   (meta.code.qual)
objID1237657634337718376  SDSS object identification number (sky version, run, rerun, camera column, field number, and ID) (Note G7)   (meta.id)
Z_PCA 1.650149   [-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 7.34287e+03   [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 1.649079   [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 3.35314e+02   [0/384079] Δχ2 for MgII line redshift versus cubic continuum fit (DELTACHI2_MGII) (stat.fit.chi2)
Z_CIII 1.649215   [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 3.79089e+02   [0/547655] Δχ2 for CIII] line redshift versus cubic continuum fit (DELTACHI2_CIII) (stat.fit.chi2)
Z_CIV 1.647490   [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 1.39501e+03   [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 1.650149   [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 0.000000   [-1/1] BAL probability (BAL_PROB) (Note G8)   (stat.fit.goodness)
BI_CIV 0.00000 km/s [/109061] BALnicity index for the CIV region (BI_CIV) (spect.line.eqWidth)
ERR_BI_CIV 0.00000e+00 km/s [0/3.1e+38] BI(CIV) uncertainty (ERR_BI_CIV) (stat.error)
AI_CIV 0.00000 km/s [-618/121609] Absorption index for the CIV region (AI_CIV) (spect.index)
ERR_AI_CIV 0.00000e+00 km/s [0/10897] AI(CIV) uncertainty (ERR_AI_CIV) (stat.error)
BI_SIIV 0.00000 km/s [/85220] BALnicity index for the SiIV region (BI_SIIV) (spect.line.eqWidth)
ERR_BI_SIIV 0.00000e+00 km/s [0/1985] BI(SIIV) uncertainty (ERR_BI_SIIV) (stat.error)
AI_SIIV 0.00000 km/s [/45671] Absorption index for the SiIV region (AI_SIIV) (spect.index)
ERR_AI_SIIV 0.00000e+00 km/s [0/1622] AI(SIIV) uncertainty (ERR_AI_SIIV) (stat.error)
BOSS_TARGET1 -1  BOSS target selection flag for the main survey (BOSS_TARGET1) Binary flag (meta.code)
EBOSS_TARGET0 -1  eBOSS target selection flag for the pilot survey (SEQUELS) (EBOSS_TARGET0) Binary flag (meta.code)
EBOSS_TARGET1 -1  eBOSS target selection flag for the main survey (EBOSS_TARGET1) Binary flag (meta.code)
EBOSS_TARGET2 -1  eBOSS target 2 selection flag for the main survey (EBOSS_TARGET2) Binary flag (meta.code)
ANCILLARY_TARGET1 -1  BOSS target selection flag for the ancillary surveys (ANCILLARY_TARGET1) Binary flag (meta.code)
ANCILLARY_TARGET2 -1  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_NUMBER2831   [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_NUMBER5   [1/6] SDSS camera column number (CAMCOL_NUMBER) (meta.id)
FIELD_NUMBER 64   [11/872] SDSS field number (FIELD_NUMBER) (meta.id;obs.field)
ID_NUMBER 104   [2/4093] SDSS photometric ID (ID_NUMBER) (meta.id;phot)
LAMBDA_EFF5000 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 3.417571 mm [-325/325] Hole x-axis position in focal plane (pos.cartesian.x;instr.plate)
Yfocal 128.165833 mm [-325/326] Hole y-axis position in focal plane (pos.cartesian.y;instr.plate)
Chunkchunk35  Name of tiling chunk (from the plate-list product) (obs.field)
Tile 674   [-3/17691] Tile number (obs.field)
PLATESN2 20.799101   [0/334] Overall (S/N)2 measure for plate, minimum of all four cameras (PLATESN2) (stat.snr)
PSFFLUXu 14.914055 3.63uJy [-45/2001] PSF flux in u-band in nMgy (not corrected for Galactic extinction) (PSFFLUXu) (phot.mag;em.opt.U)
PSFFLUXg 16.817591 3.63uJy [-0.3/1756] PSF flux in g-band in nMgy (not corrected for Galactic extinction) (PSFFLUXg) (phot.mag;em.opt.B)
PSFFLUXr 17.553467 3.63uJy [-0.6/1646] PSF flux in r-band in nMgy (not corrected for Galactic extinction) (PSFFLUXr) (phot.mag;em.opt.R)
PSFFLUXi 23.331564 3.63uJy [-31/2324] PSF flux in i-band in nMgy (not corrected for Galactic extinction) (PSFFLUXi) (phot.mag;em.opt.I)
PSFFLUXz 24.274500 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 6.450081 3.63uJy [0/233] Inverse variance of Fu in nMgy (PSFFLUX_IVARu) (phot.mag;em.opt.U)
PSFFLUX_IVARg 5.610452 3.63uJy [0/643] Inverse variance of Fg in nMgy (PSFFLUX_IVARg) (phot.mag;em.opt.B)
PSFFLUX_IVARr 9.410680 3.63uJy [0/160] Inverse variance of Fr in nMgy (PSFFLUX_IVARr) (phot.mag;em.opt.R)
PSFFLUX_IVARi 6.983173 3.63uJy [0/74] Inverse variance of Fi in nMgy (PSFFLUX_IVARi) (phot.mag;em.opt.I)
PSFFLUX_IVARz 1.476243 3.63uJy [0/9] Inverse variance of Fz in nMgy (PSFFLUX_IVARz) (phot.mag;em.opt.I)
PSFMAGu 19.5659 mag [14.2/31] PSF (AB) magnitude in u band (not corrected for Galactic extinction) (PSFMAGu) (phot.mag;em.opt.U)
PSFMAGg 19.4356 mag [14.3/26.4] PSF (AB) magnitude in g band (not corrected for Galactic extinction) (PSFMAGg) (phot.mag;em.opt.B)
PSFMAGr 19.3890 mag [14.4/26.6] PSF (AB) magnitude in r band (not corrected for Galactic extinction) (PSFMAGr) (phot.mag;em.opt.R)
PSFMAGi 19.0801 mag [14/30] PSF (AB) magnitude in i band (not corrected for Galactic extinction) (PSFMAGi) (phot.mag;em.opt.I)
PSFMAGz 19.0361 mag [14.3/24.5] PSF (AB) magnitude in z band (not corrected for Galactic extinction) (PSFMAGz) (src.redshift;pos.heliocentric)
PSFMAGERRu 2.86596e-02 mag [0.007/2.7e+6] umag uncertainty (PSFMAGERRu) (stat.error;phot.mag)
PSFMAGERRg 2.72544e-02 mag [0.007/38] gmag uncertainty (PSFMAGERRg) (stat.error;phot.mag)
PSFMAGERRr 2.01609e-02 mag [0.005/26] rmag uncertainty (PSFMAGERRr) (stat.error;phot.mag)
PSFMAGERRi 1.76077e-02 mag [0.006/2.4e+6] imag uncertainty (PSFMAGERRi) (stat.error;phot.mag)
PSFMAGERRz 3.67443e-02 mag [0.008/114] zmag uncertainty (PSFMAGERRz) (stat.error;phot.mag)
EXTINCTIONu 0.038595 mag [0.009/3.8] Galactic extinction in the u-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONu) (phys.absorption)
EXTINCTIONg 0.028398 mag [0.007/2.8] Galactic extinction in the g-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONg) (phys.absorption)
EXTINCTIONr 0.020596 mag [0.005/2.1] Galactic extinction in the r-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONr) (phys.absorption)
EXTINCTIONi 0.015618 mag [0.003/1.6] Galactic extinction in the i-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONi) (phys.absorption)
EXTINCTIONz 0.011073 mag [0.002/1.1] Galactic extinction in the z-band from Schlafly & Finkbeiner (2011ApJ...737..103S) (EXTINCTIONz) (phys.absorption)
M_I-26.1675 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 7.8409   [-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 3.8955 3.63uJy [-1.4/1318] FUV flux for GALEX in nMgy (FUV) (phot.flux;em.UV)
FUV_IVAR 24.4961 3.63uJy [-1/68408] Inverse variance of FFUV in nMgy (FUV_IVAR) (phot.flux;em.UV)
NUV 7.3573 3.63uJy [-1.3/1235] NUV flux for GALEX in nMgy (NUV) (phot.flux;em.UV)
NUV_IVAR 58.0257 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 2.87427e+02 309.05nJy [-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 5.93394e-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_MAG16.3537 mag [9.2/31.2] WISE W1-band magnitude (Vega) (W1_MAG) (phot.mag;em.IR.3-4um)
W1_MAG_ERR 0.0490 mag [0.0001/52540] W1mag uncertainty (W1_MAG_ERR) (stat.error;phot.mag)
W1_CHI2 7.12309e-01   [-1/1.2e+6] Profile-weighted ξ2 for the W1 band (W1_CHI2) (stat.fit.chi2)
W1_FLUX_SNR 22.1411   [-5564/14926] Signal-to-noise ratio for the W1 band from the flux and inverse variance (W1_FLUX_SNR) (stat.snr)
W1_SRC_FRAC 0.882373   [-1/1] Fraction of source in profile-weighted fit (W1_SRC_FRAC) (stat.fit.omc)
W1_EXT_FLUX 2.08894e-03   [-12060/6841] Amount of flux added to the profile by nearby sources (W1_EXT_FLUX) (stat.fit.omc)
W1_EXT_FRAC 0.000007   [-205/2488] Fraction of profile flux from nearby sources (W1_EXT_FRAC) (stat.fit.omc)
W1_NPIX 63   [-1/3817] Number of pixels included in the profile fit (W1_NPIX) (meta.number)
W2_FLUX 7.26393e+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 0.000455 167.66nJy-2 [0/0.011] Inverse variance of FW2 (Vega, nanomaggies–2) (W2_FLUX_IVAR) (phot.mag;em.IR.4-8um)
W2_MAG15.3471 mag [8.1/31.4] WISE W2-band magnitude (Vega) (W2_MAG) (phot.mag;em.IR.4-8um)
W2_MAG_ERR 0.0701 mag [0.0002/245404] W2mag uncertainty (W2_MAG_ERR) (stat.error;phot.mag)
W2_CHI2 4.58092e-01   [-1/114995] Profile-weighted ξ2 for the W2 band (W2_CHI2) (stat.fit.chi2)
W2_FLUX_SNR 15.4973   [-2241/6734] Signal-to-noise ratio for the W2 band from flux and inverse variance (W2_FLUX_SNR) (stat.snr)
W2_SRC_FRAC 0.895260   [-1/1] Fraction of source in the profile-weighted fit (W2_SRC_FRAC) (stat.fit.omc)
W2_EXT_FLUX 8.27042e-03   [-9089/6580] Amount of flux added to the profile by nearby sources (W2_EXT_FLUX) (stat.fit.omc)
W2_EXT_FRAC 0.000011   [-9.7/12145] Fraction of profile flux from nearby sources (W2_EXT_FRAC) (stat.fit.omc)
W2_NPIX 63   [-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_MATCHED1   [0/1] Gaia matching flag (GAIA_MATCHED) (meta.code)
GAIA_DESIGNATION 827976064382125056   Gaia DR2 identifier (GAIA_DESIGNATION) (meta.id.cross)
GAIA_RA147.4769851 deg Gaia barycentric right ascension (J2015.5) (GAIA_RA) (pos.eq.ra)
GAIA_DEC 51.8002668 deg Gaia barycentric declination (J2015.5) (GAIA_DEC) (pos.eq.dec)
GAIA_PARALLAX -0.0181 mas [-25.2/14] Gaia absolute stellar parallax (J2015.5) (GAIA_PARALLAX) (pos.parallax)
GAIA_PARALLAX_ERR 12.1791 mas [0/1415] Plx uncertainty (GAIA_PARALLAX_ERR) (stat.error;pos.parallax)
GAIA_PM_RA -0.047 mas/yr [-42/38.3] Gaia proper motion in RA (J2015.5) (GAIA_PM_RA) (pos.pm;pos.eq.ra)
GAIA_PM_RA_ERR 6.530 mas/yr [0/763] pmRA uncertainty (GAIA_PM_RA_ERR) (stat.error;pos.pm;pos.eq.ra)
GAIA_PM_DEC -0.286 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 6.199 mas/yr [0/725] pmDE uncertainty (GAIA_PM_DEC_ERR) (stat.error;pos.pm;pos.eq.dec)
GAIA_G_MAG19.0837 mag [14.6/22] Gaia mean magnitude in the G band (Vega) (GAIA_G_MAG) (phot.mag;em.opt)
GAIA_G_FLUX_SNR 260.0396   [5/1805] Mean flux over the standard deviation in the (Vega) G band (GAIA_G_FLUX_SNR) (stat.snr)
GAIA_BP_MAG19.1929 mag [0/23.6] Gaia mean magnitude in the (Vega) BP band (GAIA_BP_MAG) (phot.mag;em.opt.B)
GAIA_BP_FLUX_SNR 39.6548   [0/9423] Mean flux over the standard deviation in the (Vega) BP band (GAIA_BP_FLUX_SNR) (stat.snr)
GAIA_RP_MAG18.6727 mag [0/23.2] Gaia mean magnitude in the (Vega) RP band (GAIA_RP_MAG) (phot.mag;em.opt.R)
GAIA_RP_FLUX_SNR 32.3174   [0/39131] Mean flux over the standard deviation in the (Vega) RP band (GAIA_RP_FLUX_SNR) (stat.snr)
SDSS2GAIA_SEP 0.1134 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 J094954.48+514800.9  ask the Simbad data-base about this object (meta.ref.url)
  
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