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 The HST Guide Star Catalog, Version 1.1 (Lasker+ 1992)
This catalogue is obsoleted by I/254
Post annotation
1.I/220/outThe Full Catalogue (25258765 positions) (25258765 rows)
The Guide Star Catalog has been constructed to support the operational need of the Hubble Space Telescope; it is primarily based on an all-sky, single epoch, single passband collection of Schmidt plates. It contains over 25 million positions for about 19 million objects, of which more than 15 million are classified as stars.

Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  GSC  GSC designation (Note)   (;meta.main)
  RAJ2000 deg Right ascention in J2000, epoch of plate (pos.eq.ra;meta.main)
  DEJ2000 deg Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
  PosErr arcsec Mean error on position (stat.error)
  Pmag mag photographic magnitude (see n_Pmag) (phot.mag;em.opt)
  e_Pmag mag Mean error on photographic magnitude (stat.error)
  n_Pmag   [0,18] Coded passband for magnitude (Note)   (meta.note)
  Class   [0,3] Class of object (0=star; 3=non-stellar) (src.class)
  Plate (char) Plate designation (obs.field)
  Epoch yr Epoch of plate (time.epoch)
  Mult (char) [TF] True if multiple object / False otherwise (meta.code.multip)
  Versions  Get parameters of that star from all GSC versions (meta.ref)

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