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I/87B               LHS Catalogue, 2nd Edition                     (Luyten 1979)
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LHS Catalogue: a catalogue of stars with proper motions exceeding 0.5"
annually.
     Luyten W.J.
    <University of Minnesota, Minneapolis, September (1979)>
    =1979lccs.book.....L
================================================================================
ADC_Keywords: Proper motions

Description:
    The catalogue gathers stars with large proper motions, the large
    majority coming out of the Bruce Proper Motion Survey (W.J. Luyten).
    804 fields in the Palomar Survey have been hand-blinked or processed
    by an automated blink-machine; 160 low galactic latitude fields
    could not be handled. There are therefore many less stars with
    high proper motion south of -33 degrees (limit of the Palomar Survey)
    compared to the Northern hemisphere.

    Stars with proper motions larger than 2arcsec/yr are numbered 1 to 100;
    stars with proper motions between 1 and 2arcsec/yr are numbered 101
    to 1000 ; numbers 1001 through 5000 are assigned to stars with
    proper motions between 0.5 and 1arcsec/yr. The stars which appear
    to have motions between 0.480 and 0.499arcsec/yr have been assigned
    numbers larger than 5000.
    Numbers larger than 6000 refer to Appendix II of the printed
    publication, containing stars for which at one time or another a
    value larger than 0.49arcsec/yr was published; these numbers are not
    listed in the printed version of the catalogue.

    All proper motions have been reduced to the Palomar-Bruce system.

    The catalogue supersedes the "Catalogue of Stars with Motions
    exceeding 0.5" annually" (LFT) published in 1955 (CDS ref. <I/54>)

File Summary:
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FileName     Lrecl    Records    Explanations
--------------------------------------------------------------------------------
ReadMe          80          .    This file
catalog.dat     90       4470    The LHS catalogue
notes.dat       63        411    Notes to LHS stars
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See also:
    I/98 : NLTT Catalogue (proper motion exceeding 0.2" annually)

Byte-by-byte Description of file: catalog.dat
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   Bytes Format  Units   Label    Explanations
--------------------------------------------------------------------------------
   1-  5  A5     ---     LHS      [1-90ab ]+ designation
       6  A1     ---     Note     [*] '*' note detailed in file "notes.dat"
   7- 21  A15    ---     Name     Other designation
  23- 24  I2     h       RAh      Right Ascension 2000 (hours)
  25- 26  I2     min     RAm      Right Ascension 2000 (minutes)
  27- 28  I2     s       RAs      Right Ascension 2000 (seconds)
      29  A1     ---     DE-      Declination 2000 (sign)
  30- 31  I2     deg     DEd      Declination 2000 (degrees)
  32- 34  I3   0.1arcmin DEdm     Declination 2000 (deci-minutes)
  36- 37  I2     h       RA1950h  Right Ascension 1950 (hours)
  38- 39  I2     min     RA1950m  Right Ascension 1950 (minutes)
  40- 41  I2     s       RA1950s  Right Ascension 1950 (seconds)
      42  A1     ---     DE1950-  Declination 1950 (sign)
  43- 44  I2     deg     DE1950d  Declination 1950 (degrees)
  45- 47  I3   0.1arcmin DE1950dm Declination 1950 (deci-minutes)
  49- 52  F4.1   mag     Rmag     ? Red magnitude
  54- 57  F4.1   mag     Pmag     ? Photographic magnitude
      58  A1     ---     l_Pmag   [+] '+' when Pmag is a lower value
  59- 61  A3     ---     Sp       Spectral type
  62- 64  A3     ---     Color    [ bafgkm+-] classification based on colour
  65- 70  F6.3 arcsec/yr pm       ? Total proper motion (1)
      71  A1     ---     u_pm     Uncertainty flag on proper motion
  72- 76  F5.1   deg     pmPA     [0/360[? Position angle of proper motion (1)
  77- 90  A14    ---     Disc     Original (discovery) name or author
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Note (1): the proper motion is empty for LHS 6219, indicated as
    "plate flaw" in the catalogue.
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Byte-by-byte Description of file: notes.dat
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   Bytes Format  Units   Label    Explanations
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   1-  5  A5     ---     LHS      Star
   7- 63  A57    ---     Text     Text of note
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Historical Notes:
  * March 1984: first announced in CDS Inf. Bull. 26
  * 16-Mar-1995 (version 'A'): reformatted at CDS, transformed to
    lower-case, and added notes.dat.
    Duplicate entry LHS 3224 has been deleted
    Erroneous BD+04 3561 number for Barnard's star (LHS 57) removed
  * 15-Jul-1998 (version 'B'): following a message by John Gizis
    (gizis@stratford.phast.umass.edu), two erroneous records
    (LHS 2297 and 3038) have been corrected.
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(End)                                    Francois Ochsenbein [CDS]   15-Jul-1998