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J/A+AS/128/457  Proper motion LTT stars -5<DE←30, 0<RA<13h30 (Wroblewski+ 1998)
New proper motion determination of Luyten catalogue stars (LTT) with declination
between -5° and -30° and right ascension between 0h and 13h 30m.
      Wroblewski H., Torres C.
     <Astron. Astrophys. Suppl. Ser. 128, 457 (1998)>
     =1998A&AS..128..457W      (SIMBAD/NED BibCode)
ADC_Keywords: Proper motions

Keywords: astrometry - stars: kinematics


Abstract:
    Data are given for 353 LTT stars found on 42 areas, covering 25 square
    degrees each, with declination between -5° and -30° and right
    ascension between 0h and 13h 30m. Nineteen stars present differences
    in proper motion ≥0.10", twenty present differences in position angle
    ≥20° and six present those differences in both values.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        92      353   Proper motions and position angles


See also:
           I/98 : NLTT Catalogue (Luyten, 1979)
           I/87 : LHS Catalogue, 2nd Edition (Luyten 1979)
  J/A+AS/83/317 : Proper-motion LTT stars Dec←40, 0<RA<4h30 (Wroblewski+ 1990)
  J/A+AS/92/449 : Proper-motion LTT stars Dec←40, 4h30<RA<16 (Wroblewski+ 1992)
  J/A+AS/110/27 : Proper motion LTT stars Dec←40, 16<RA<24 (Wroblewski+, 1995)
 J/A+AS/128/457 : LTT stars -5<DE←30, 0<RA<13h30 (Wroblewski+ 2000)


Byte-by-byte Description of file: table2.dat

   Bytes Format Units     Label     Explanations

   1-  3  I3    ---       ID        Correlative number
   5-  8  I4    ---       LTT       Star number in Luyten's catalogue
  10- 15  A6    ---       Loc       Location number (1)
  17- 20  F4.1  mag       mag       Magnitude
  22- 23  I2    h         RA1950h   Right ascension (1950)
  25- 26  I2    min       RA1950m   Right ascension (1950)
  28- 31  F4.1  s         RA1950s   Right ascension (1950)
      33  A1    ---       DE1950-   Declination sign
  34- 35  I2    deg       DE1950d   Declination (1950)
  37- 38  I2    arcmin    DE1950m   Declination (1950)
  40- 41  I2    arcsec    DE1950s   Declination (1950)
  43- 44  I2    h         RAh       Right ascension (J2000)
  46- 47  I2    min       RAm       Right ascension (J2000)
  49- 52  F4.1  s         RAs       Right ascension (J2000)
      54  A1    ---       DE-       Declination sign
  55- 56  I2    deg       DEd       Declination (J2000)
  58- 59  I2    arcmin    DEm       Declination (J2000)
  61- 62  I2    arcsec    DEs       Declination (J2000)
  64- 68  F5.3  arcsec/yr pm        Annual proper motion
  70- 74  F5.3  arcsec/yr e_pm      rms uncertainty on pm
  76- 80  F5.1  deg       pmPA      Position angle of proper motion
  82- 86  F5.2  arcsec/yr Dpm       Comparison of our proper motions with LTT
                                     proper motions in sense LTT minus ours
  88- 90  I3    deg       DpmPA     Comparison of our position angles with LTT
                                     position angles in sense LTT minus ours
      92  A1    ---       Com       [*] Comment (2)

Note (1): The first two digits refer to the area number and the
     other digits refer to the star number in the area
Note (2): The annual proper motions and the position angles are
    the means of the two values obtained from the plate pairs; 20 LTT
    stars were common to the overlapped areas mentioned above. For them,
    the results, indicated by *, correspond to the means of the values
    obtained from four plates pairs.


Acknowledgements: Herbert Wroblewski 

(End)                                          Patricia Bauer [CDS]  22-Apr-1998