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VizieR

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J/PASP/115/413/catalog BVI photometry in the open cluster NGC 6791 (Stetson+, 2003)
Main data table (16258 rows)
  SBG=10656
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ColumnValue  Explain   (UCD)
_RAJ200019 21 00.3800 "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+37 45 14.800 "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)
_RAB195019 19 15.1028 "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+37 39 31.563 "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)
_Glon069.9532755 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+10.8742573 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)

SBG10656  (i) Sequential identification number (Note 1)   (meta.id;meta.main)

xx  Flag set to x if crossids available in Table crossid (meta.ref.url)

Xpos1279.2 pix X in accompanying image (Note 2)   (pos.cartesian.x;obs.image)
Ypos1005.5 pix Y in accompanying image (Note 2)   (pos.cartesian.y;obs.image)
Bmag20.773 mag B-band magnitude (phot.mag;em.opt.B)
e_Bmag 0.0031 mag σ(B), standard error of the mean (stat.error;phot.mag;em.opt.B)
o_Bmag 57  Number of valid photometric measurements in B (meta.number)
Vmag19.647 mag V-band magnitude (phot.mag;em.opt.V)
e_Vmag 0.0011 mag σ(V), standard error of the mean (stat.error;phot.mag;em.opt.V)
o_Vmag 924  Number of valid photometric measurements in V (meta.number)
Imag18.460 mag I-band magnitude (phot.mag;em.opt.I)
e_Imag 0.0007 mag σ(I), standard error of the mean (stat.error;phot.mag;em.opt.I)
o_Imag 703  Number of valid photometric measurements in I (meta.number)
chi 1.002  Mean value of the χ image-quality index (Note 3)   (stat.fit.goodness)
sharp 0.050  Mean value of the sharp image-quality index (Note 4)   (src.class.starGalaxy)
sep 2.52   Value of the sep image-isolation index (Note 5)   (meta.code)
VI 0.964  Value of the variability index (meta.code;src.var.index)
w_VI841.5  Weight of the variability index (stat.weight;phys.atmol.weight)
Num 684  Number of images used for the astrometry (meta.number)
RAJ200019 21 00.38 "h:m:s" (i) Hour of Right Ascension (J2000.0) (pos.eq.ra;meta.main)
DEJ2000+37 45 14.8 "d:m:s" (i) Degree of Declination (J2000.0) (pos.eq.dec;meta.main)
  
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