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  The AC2000 Catalogue (Urban+ 1997)
This catalogue is obsoleted by I/275
Post annotation
1.I/247/ac2000 full AC J2000 catalog, split here into 14 files. (Note) (4621836 rows)
Detailed information can be found in intro.tex (see also Direct links to Hipparcos and Tycho observations are provided from the relevant columns.

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)
  RA(ICRS) "h:m:s" (i) Right Ascension (ICRS) at Epoch (hours) (pos.eq.ra;meta.main)
  DE(ICRS) "d:m:s" (i) Declination (ICRS) at Epoch (degrees) (pos.eq.dec;meta.main)
  Bmag mag Magnitude from image diameters (phot.mag;em.opt.B)
  Epoch yr Mean epoch of position (time.epoch)
  Num  Number of images used (meta.number)
  e_RAs arcsec (n)Standard deviation of mean, RA (stat.error)
  e_DEs arcsec (n)Standard deviation of mean, Dec (stat.error)
  AC2000  (i) AC 2000 Number (;meta.main)
  HIP  (n)(i) Hipparcos Number (Cat. I/239) (
  TYC (char) Tycho ID (Cat. I/239) (Note)   (
  ACRS  (n)ACRS number (Cat. I/171) (
  Vflag  (n) [1] Verification Flag (Note)   (meta.note)

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