VizieR

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I/131A
  SAO Star Catalog J2000 (SAO Staff 1966; USNO, ADC 1990)
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1.I/131A/saoThe SAO J2000.0 catalogue (258997 rows)

Simple ConstraintList Of Constraints
 
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)
  SAO  (i) [1/258997] SAO Catalog number (meta.id;meta.main)
  delFlag (char) [D] if star deleted (ignore all fields) (meta.code)
  RAB1950 "h:m:s" (i) Hours RA, Equinox=B1950, Epoch=1950.0 (pos.eq.ra;meta.main)
  pmRA s/a Annual proper motion in RA, FK4 system (pos.pm;pos.eq.ra)
  e_pmRA mas/a Standard deviation in pmRA (stat.error;pos.pm;pos.eq.ra)
  RA2mf (char) [±] '+', add 1, or '-', substract 1, RA minute: indication that the minutes of time associated with the seconds portion RA2 must be increased or decreased by 1 (meta.note)
  RA2s s Seconds portion of RA, original epoch, precessed to B1950 (pos.eq.ra)
  e_RA2s 10mas Standard deviation of RA2 (stat.error;pos.eq.ra)
  EpRA2 a Epoch of RA2 (RA original epoch) (time.epoch)
  DEB1950 "d:m:s" (i) Degrees Dec, equinox B1950, Epoch=1950.0 (pos.eq.dec;meta.main)

ALL cols		    
 (i)indexed column
  pmDE arcsec/a (n) Annual proper motion in Dec, FK4 system (Note 10)   (pos.pm;pos.eq.dec)
  e_pmDE mas/a Standard deviation of Dec proper motion (stat.error;pos.pm;pos.eq.dec)
  DE2mf (char) [±] '+', add 1, or '-', substract 1: Indication that the arcminutes associated with DE2 must be increased or decreased by 1 (meta.note)
  DE2s arcsec Seconds of Declination, original epoch, precessed to B1950 (pos.eq.dec)
  e_DE2s 10mas Standard deviation of DE2 (stat.error;pos.eq.dec)
  EpDE2 a Epoch of DE2 (Declinaation original epoch) (time.epoch)
  e_Pos 10mas Standard deviation of position at epoch 1950.0 (stat.error)
  Pmag mag (n) []? Photographic magnitude (phot.mag;em.opt.B)
  Vmag mag (n) []? Visual magnitude (phot.mag;em.opt.V)
  SpType (char) Spectral type, '+++' for composite spectra (src.spType)
  r_Vmag  Coded source of visual magnitude (Note 1)   (meta.ref;pos.frame)
  r_Num  Coded source of star number and footnotes (Note 2)   (meta.ref;pos.frame)
  r_Pmag  Coded source of photographic magnitude (Note 3)   (meta.ref;pos.frame)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  r_pmRA  Coded source of proper motions (Note 4)   (meta.ref;pos.pm;pos.eq.ra)
  r_SpType  Coded source of spectral type (Note 5)   (meta.ref;pos.frame)
  Rem  Coded remarks duplicity and variability (Note 6)   (meta.code;src.var)
  a_Vmag  Accuracy of V: 0 = 2 decimals, 1=1 decimal (meta.code.qual)
  a_Pmag  Accuracy of Ptg: 0 = 2 decimals, 1=1 decimal (meta.code.qual)
  r_Cat  Code for source catalog (Note 7)   (meta.ref;pos.frame)
  CatNum  Number in source catalog (meta.id)
  DM (char) Durchmusterung identification (Note 9)   (meta.id)
  HD (char) Henry Draper Catalog (HD or HDE) number (A6) (Catalogue III/135) (meta.id)
  m_HD (char) HD component and multiple code (Note 8)   (meta.code.multip)
  GC (char) Boss General Catalog (GC) number (Catalogue I/113) (meta.id)
  RA2000 "h:m:s" Hours RA, equinox, epoch J2000.0 (pos.eq.ra)
  pmRA2000 s/a Annual proper motion in FK5 system (pos.pm;pos.eq.ra)
  DE2000 "d:m:s" Degrees Dec, equinox, epoch J2000.0 (pos.eq.dec)
  pmDE2000 arcsec/a (n) Annual proper motion in FK5 system (Note 10)   (pos.pm;pos.eq.dec)
  _RA.icrs "h:m:s" (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 "d:m:s" (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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