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VizieR

Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
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J/AJ/122/1486
  NGC 2451A proper motions and membership (Platais+, 2001)
Post annotation
img(gal)
1.J/AJ/122/1486/spmCatalog of positions, relative proper motions and BV photographic photometry in the region of open cluster NGC 2451 (5868 rows)

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  PKB  (i) Running identification number, Cl* NGC 2451 PKB NNNNN in Simbad (meta.id;meta.main)
  Xpos mm X position (Note 1)   (pos.cartesian.x;instr.plate)
  Ypos mm Y position (Note 1)   (pos.cartesian.y;instr.plate)
  RArad deg (i) Right ascension for the epoch 1991.25 and in the ICRS reference system (i.e. equinox 2000.0) (pos.eq.ra;meta.main)
  DErad deg (i) Declination for the epoch 1991.25 and equinox 2000.0 (pos.eq.dec;meta.main)
  e_RArad mas Estimated standard error in right ascension multiplied by cos(DE) (stat.error)
  e_DErad mas Estimated standard error in declination (stat.error)
  pmRA mas/yr Relative proper motion in right ascension multiplied by cos(DE) (pos.pm;pos.eq.ra)
  pmDE mas/yr Relative proper motion in declination (pos.pm;pos.eq.dec)
  o_Bmag  The number of grating images per star detected on blue plates (grating image pairs are counted as one image) (meta.number)

ALL cols
    
 (i)indexed column
  o_Vmag  The number of grating images per star on visual plates (meta.number)
  e_pmRA mas/yr Estimated standard error in right ascension's proper motion (stat.error;pos.pm;pos.eq.ra)
  e_pmDE mas/yr Estimated standard error in declination's proper motion (stat.error;pos.pm;pos.eq.dec)
  Bmag mag (n) Photographic B-magnitude (if missing then set to 0.00) (phot.mag;em.opt.B)
  e_Bmag mag Estimated standard error of B-magnitude (stat.error;phot.mag;em.opt.B)
  Vmag mag (n) Photographic V-magnitude (if missing then set to 0.00) (phot.mag;em.opt.V)
  e_Vmag mag Estimated standard error of V-magnitude (stat.error;phot.mag;em.opt.V)
  Vmagc mag (n) CCD V-magnitude (if missing then set to -1.000) (phot.mag;em.opt.V)
  B-Vc mag (n) CCD B-V color (if missing then set to -1.000) (phot.color;em.opt.B;em.opt.V)
  e_Vmagc mag IRAF generated error in CCD V-magnitude (stat.error;phot.mag;em.opt.V)
  e_B-Vc mag IRAF generated error in CCD B-V color (stat.error;phot.color;em.opt.B)
  Nframe  (n) [0/4] Number of frames per star (Note G1)   (meta.number)
  _RA.icrs deg (n)(i) Right ascension (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
  _DE.icrs deg (n)(i) Declination (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
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