ADC/CDS Standard Document for Catalog:
/catalogs/5/5025B/

IMPORTANT NOTICE:

Superseded   Yale Bright Star Catalogue, 4th Revised Edition (Hoffleit 1982)
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The Bright Star Catalogue, 4th Revised Edition
    Hoffleit D.
    <Yale University Observatory [with the collaboration of C. Jaschek] (1982)>
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ADC_Keywords: Stars, bright ; Combined data

Description:
   The catalog is a compilation of important astronomical and astrophysical
   data for stars brighter than visual magnitude 6.50 (although this limit is
   not precise in the modern standard magnitude system [UBV]).  The stars are
   sequentially numbered in order of 1900 right ascension.  Data included are
   BS=HR number; name; DM number; HD number; double-star code or
   identification; variable-star identification; right ascension (B1900)
   declination, right ascension (B2000) declination; galactic coordinates;
   V magnitude; B-V, U-B, R-I colors; spectral type; annual proper motions;
   parallax; radial velocity (km/s); projected rotational velocity v sin i
   (km/s). Data included for multiple stars are magnitude difference,
   separation (arcsec), component identifications (A, B, ...), and
   number of components (N).  A remarks flag is included as a pointer to a
   remarks file.  A second file contains an introduction to the remarks file,
   and a third file contains the actual remarks for stars flagged in the data
   file.  There are 14 objects (nine novae or supernovae, four globular
   clusters, and Messier 31 [the Andromeda galaxy]) that had been assigned HR
   numbers by E. C. Pickering ("Harvard Revised Photometry", Ann. Harvard
   College Obs 50, 1908) and whose sequential numbers have been retained but
   with information on name, variable-star designation, or year of outburst
   only; thus, only 9096 of the 9110 data records have the normal complement
   of data.  NOTE: It is important to note that the v sin i descriptive
   character field, in addition to the characters "<" and ">", may contain
   upper limit (LE, hexidecimal code '8C') characters:  This character has no
   equivalent in ASCII internal coding; thus, all occurrences of this
   character are translated to EBCDIC code 3F.  This also occurs for the
   brackets characters "[" (hex.  'AD', punch code 11-0-5-8) and "]" (hex.
   'BD', punch code 12-11-0-5-8) in the second and third files, which are
   present in random places throughout the records.  Since all EBCDIC
   characters without ASCII equivalents translate to '3F', there is no way,
   except by context, to reconstruct the correct characters.

See also:
   Superseded by catalog 5050 in Oct. 1991:

   5050 : Yale Bright Star Catalogue, 5th Revised Ed. (Hoffleit, Warren 1991)
   at URL ftp://adc.astro.umd.edu/pub/adc/archives/catalogs/5/5050


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