VizieR

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

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II/118
  UBVRI standards around Celestial Equator (Landolt 1983)
ReadMe+ftp
1983AJ.....88..439L
Similar Catalogs
Post annotation 		img(gal)
1.II/118/mainThe Data (223 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)
  Name (char) Star identification (Note 1)   (meta.id;meta.main)
  RA1985 "h:m:s" (i) Hours RA, Equinox=1985, Epoch=1985 (pos.eq.ra;meta.main)
  DE1985 "d:m:s" (i) Degrees Dec, equinox and epoch 1985.0 (pos.eq.dec;meta.main)
  Vmag mag Weighted V magnitude in the UBVRI system (phot.mag;em.opt.V)
  B-V mag Weighted B-V color in the UBVRI system (phot.color;em.opt.B;em.opt.V)
  U-B mag Weighted U-B color in the UBVRI system (phot.color;em.opt.U;em.opt.B)
  V-R mag Weighted V-R color in the UBVRI system (phot.color;em.opt.V;em.opt.R)
  R-I mag Weighted R-I color in the UBVRI system (phot.color;em.opt.R;em.opt.I)
  V-I mag Weighted V-I color in the UBVRI system (phot.color;em.opt.V;em.opt.I)
  Obs  Number of observations used to compute weighted means (meta.number)

ALL cols		    
 (i)indexed column
  Nights  Number of nights on which the star was observed (meta.number)
  e_Vmag mag Mean error of mean V magnitude (Note 2)   (stat.error;phot.mag;em.opt.V)
  e_B-V mag Mean error of mean B-V color (Note 2)   (stat.error;phot.color;em.opt.B)
  e_U-B mag Mean error of mean U-B color (Note 2)   (stat.error;phot.color;em.opt.U)
  e_V-R mag Mean error of mean V-R color (Note 2)   (stat.error;phot.color;em.opt.V)
  e_R-I mag Mean error of mean R-I color (Note 2)   (stat.error;phot.color;em.opt.R)
  e_V-I mag Mean error of mean V-I color (Note 2)   (stat.error;phot.color;em.opt.V)
  Notes (char) Number(s) of notes (Note 3)   (meta.note)
  _RA.icrs "h:m:s" (n)(i) Right ascension (ICRS) at Epoch=J1985. (computed by VizieR, not part of the original data) (pos.eq.ra)
  _DE.icrs "d:m:s" (n)(i) Declination (ICRS) at Epoch=J1985. (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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