VizieR

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II/321/iphas2 IPHAS DR2 Source Catalogue (Barentsen+, 2014)
IPHAS DR2 (218,991,524 sources) (218991524 rows)
  IPHAS===J205318.57+451100.8
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ColumnValue  Explain   (UCD)
_RAJ200020 53 18.5688 "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+45 11 00.744 "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)
_RAB195020 51 33.6947 "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+44 59 36.072 "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)
_Glon085.5216498 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+00.3085904 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)

IPHASJ205318.57+451100.8  (i) IPHAS name, based on J2000 position (meta.id;meta.main)
RAJ2000313.32737 deg (i) Right ascension (J2000) from r-band (pos.eq.ra;meta.main)
DEJ2000+45.18354 deg (i) Declination (J2000) from r-band (pos.eq.dec;meta.main)
sourceID374123-2-4559  (i) Unique identification number (meta.id)
posErr 0.07 arcsec RMS residual against 2MASS across the CCD (stat.error)
mergedClass-1  Image classification flag (Note 1)   (meta.code.class)
mergedClassStat 59.97  Merge stellarness-of-profile statistic (stat)
pStar 0.90  Point source probability (stat.fit.goodness)
pGalaxy 0.05  Extended source probability (stat.fit.goodness)
pNoise 0.05  Noise source probability (stat.fit.goodness)
rmi  mag r-i colour (phot.color;em.opt.R;em.opt.I)
rmha  mag r-Halpha colour (phot.color;em.opt.R;em.line.Halpha)
r  mag (i) r mag using 2.3 arcsec diameter aperture (Vega scale) (phot.mag;em.opt.R)
rErr  mag Uncertainty for r (Note 2)   (stat.error;phot.mag)
rPeakMag  mag Alternative r mag derived from the peak pixel height (Vega scale) (phot.mag;em.opt.R)
rPeakMagErr  mag Uncertainty in rPeakMag (Note 2)   (stat.error;phot.mag)
rAperMag1  mag Alternative r mag using the 1.2 arcsec diameter aperture (Vega scale) (phot.mag)
rAperMag1Err  mag Uncertainty in rAperMag1 (Note 2)   (stat.error;phot.mag)
rAperMag3  mag Alternative r mag using the 3.3 arcsec diameter aperture (Vega scale) (phot.mag)
rAperMag3Err  mag Uncertainty in rAperMag3 (Note 2)   (stat.error;phot.mag)
rGauSig  pix RMS of axes of ellipse fit in r-band (stat.error)
rEll    Ellipticity in the r-band (src.ellipticity)
rPA  deg Position angle in the r-band (pos.posAng)
rClass-1  Discrete image classification flag (Note 3)   (meta.code.class)
rClassStat    N(0,1) stellarness-of-profile statistic (stat)
rDeblend0   [0,1] Blend flag for r-band. (meta.code)
rSaturated0   [0,1] Saturation flag for r-band (meta.code)
rMJD  d Modified Julian Date for the r exposure (time.epoch)
rSeeing  arcsec Average FWHM in the same CCD frame (phys.angSize)
rDetectionID    Unique identifier of the r detection (Note 4)   (meta.id)
rX  pix Pixel position in the r-band exposure (pos.cartesian.x;instr.det)
rY  pix Pixel position in the r-band exposure (pos.cartesian.y;instr.det)
i10.30 mag (i) i mag using 2.3 arcsec diameter aperture (Vega scale) (phot.mag;em.opt.I)
iErr 0.00 mag Uncertainty for i (Note 2)   (stat.error;phot.mag)
iPeakMag12.15 mag Alternative i mag derived from the peak pixel height (Vega scale) (phot.mag;em.opt.I)
iPeakMagErr 0.00 mag Uncertainty in iPeakMag (Note 2)   (stat.error;phot.mag)
iAperMag111.42 mag Alternative i mag using the 1.2 arcsec diameter aperture (Vega scale) (phot.mag)
iAperMag1Err 0.00 mag Uncertainty in iAperMag1 (Note 2)   (stat.error;phot.mag)
iAperMag3 9.68 mag Alternative i mag using the 3.3 arcsec diameter aperture (Vega scale) (phot.mag)
iAperMag3Err 0.00 mag Uncertainty in iAperMag3 (Note 2)   (stat.error;phot.mag)
iGauSig 154.23 pix RMS of axes of ellipse fit in i-band (stat.error)
iEll 0.99   Ellipticity in the i-band (src.ellipticity)
iPA 90.03 deg Position angle in the i-band (pos.posAng)
iClass-1  Discrete image classification flag (Note 3)   (meta.code.class)
iClassStat 59.97   N(0,1) stellarness-of-profile statistic (stat)
iDeblend1   [0,1] Blend flag for i-band. (meta.code)
iSaturated1   [0,1] Saturation flag for i-band (meta.code)
iMJD52952.85554 d Modified Julian Date for the i exposure (time.epoch)
iSeeing 0.76 arcsec Average FWHM in the same CCD frame (phys.angSize)
iDetectionID374123-2-4559   Unique identifier of the i detection (Note 4)   (meta.id)
iX 920.55 pix Pixel position in the i-band exposure (pos.cartesian.x;instr.det)
iY 468.27 pix Pixel position in the i-band exposure (pos.cartesian.y;instr.det)
iXi 0.00 arcsec offset of the i-band position relative to the ra column (pos.angDistance)
iEta 0.00 arcsec offset of the i-band position relative to the dec column (pos.angDistance)
ha  mag (i) H-alpha mag using 2.3" diameter aperture (Vega scale) (phot.mag)
haErr  mag Uncertainty for H-alpha (Note 2)   (stat.error;phot.mag)
haPeakMag  mag Alternative H-alpha mag derived from the peak pixel height (Vega scale) (phot.mag)
haPeakMagErr  mag Uncertainty in haPeakMag (Note 2)   (stat.error;phot.mag)
haAperMag1  mag Alternative H-alpha mag using the 1.2 arcsec diameter aperture (Vega scale) (phot.mag)
haAperMag1Err  mag Uncertainty in haAperMag1 (Note 2)   (stat.error;phot.mag)
haAperMag3  mag Alternative H-alpha mag using the 3.3 arcsec diameter aperture (Vega scale) (phot.mag)
haAperMag3Err  mag Uncertainty in iAperMag3 (Note 2)   (stat.error;phot.mag)
haGauSig  pix RMS of axes of ellipse fit in H-alpha (stat.error)
haEll    Ellipticity in H-alpha (src.ellipticity)
haPA  deg Position angle in H-alpha (pos.posAng;spect.line)
haClass-1  Discrete image classification flag (Note 3)   (meta.code.class)
haClassStat    N(0,1) stellarness-of-profile statistic (stat)
haDeblend0   [0,1] Blend flag for H-alpha (meta.code)
haSaturated0   [0,1] Saturation flag for H-alpha (meta.code)
haMJD  d Modified Julian Date for the Ha exposure (time.epoch)
haSeeing  arcsec Average FWHM in the same CCD frame (phys.angSize)
haDetectionID    Unique ID of the H-alpha detection (Note 4)   (meta.id)
haX  pix Pixel position in the H-alpha exposure (pos.cartesian.x;instr.det)
haY  pix Pixel position in the H-alpha exposure (pos.cartesian.y;instr.det)
haXi  arcsec offset of the H-alpha position relative to the ra column (pos.angDistance)
haEta  arcsec offset of the H-alpha position relative to the dec column (pos.angDistance)
brightNeighb1   [0,1] Nearby very bright star flag (Note 5)   (meta.code)
deblend1   [0,1] Blend flag (meta.code)
saturated1   [0,1] Saturation flag (meta.code)
nBands1  Number of bands for source detection (meta.number)
a100   [0,1] signal-to-noise >10 flag (Note 6)   (meta.code)
a10point0   [0,1] quality criteria flag (Note 7)   (meta.code.qual)
fieldID6262o_nov2003  Survey field identifier (meta.id;obs.field)
fieldGradeA  Internal quality control score (meta.code.qual)
night20031109  UT date at the start of the night (time.epoch)
seeing 0.76 arcsec Maximum of rSeeing, iSeeing or HaSeeing (phys.angSize)
ccd2   [1-4] CCD chip number (meta.id)
nObs1   [1-9] Number of observations of the source (meta.number)
sourceID2    SourceID of the alternative detection of the object in the partner exposure (meta.id)
fieldID2    Field identifier of the partner detection (meta.id;instr.saturation;obs.field)
r2  mag r mag in the dithered partner field (Vega scale) (phot.mag;em.opt.R)
rErr2  mag Uncertainty for r2 (stat.error;phot.mag)
i2  mag i mag in the dithered partner field (Vega scale) (phot.mag;em.opt.I)
iErr2  mag Uncertainty for i2 (stat.error;phot.mag)
ha2  mag Ha mag in the dithered partner field (Vega scale) (phot.mag)
haErr2  mag Uncertainty for ha2 (stat.error;phot.mag)
errBits2    Error bitmask for the partner detection (Note 8)   (meta.code.qual)
  
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