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J/A+AS/132/253      9 visual double stars orbital elements (Alzner 1998)
Orbital elements of 9 visual double stars
       Alzner A.
      <Astron. Astrophys. Suppl. Ser. 132, 253 (1998)>
      =1998A&AS..132..253A      (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Binaries, orbits

Keywords: binaries: visual - astrometry


Abstract:
    Orbital elements and ephemerides for 9 visual double stars are given.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table.dat        160       10   General parameters
bu151s.dat        94       24   Bu 151 residuals: speckle measurements
bu151v.dat        94      119   Bu 151 residuals: visual measurements
hu39l.dat         94       16   Hu 39 residuals: low excentricity variant data
hu39h.dat         94       16   Hu 39 residuals: high excentricity variant data
stf1130.dat       94       24   STF 1130 residuals
stf2434.dat       94       31   STF 2434 residuals
stt229.dat        94       50   STT 229 residuals
stt363.dat        94       28   STT 363 residuals
stt448.dat        94       34   STT 448 residuals
stt53.dat         94       34   STT 53 residuals
stt89.dat         94       38   STT 89 residuals


See also:
    J/A+AS/132/237 : Double stars measurements (Alzner 1998)


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

   Bytes Format Units   Label     Explanations

   1-  8  A8    ---     Name      Name
  10- 18  A9    ---     Names     Other name
  20- 21  I2    h       RAh       Right ascension (J2000.0)
  23- 26  F4.1  min     RAm       Right ascension (J2000.0)
      28  A1    ---     DE-       Declination sign
  29- 30  I2    deg     DEd       Declination (J2000.0)
  32- 33  I2    arcmin  DEm       Declination (J2000.0)
  35- 38  F4.2  mag     Vmag1     Visual magnitude of the primary
  40- 44  F5.2  mag     Vmag2     Visual magnitude of the secondary
  45- 48  A4    ---     SpType    Spectral type
  50- 54  F5.2  mas     Plx       ? Trigonometric parallax from Hipparcos
  56- 64  F9.6  deg/yr  Prec      Precession factor for J2000
  66- 72  F7.2  yr      P         Period
  74- 78  F5.3  arcsec  a         Semi-major axis
  80- 84  F5.1  deg     i         Inclination
  86- 90  F5.1  deg     W2000     Longitude of ascending node, J2000
  92- 98  F7.2  yr      T         Time of perihelion passage
 100-104  F5.3  ---     e         Ellipticity
 106-110  F5.1  deg     w         Longitude of perihelion
 112-117  F6.4  mas     Pdyn      ? Dynamical parallax
 119-122  F4.2  solMass MA+MB     ? Total mass
 124-160  A37   ---     Com       Comments


Byte-by-byte Description of file: bu*.dat hu*.dat s*.dat

   Bytes Format Units   Label     Explanations

   1-  8  F8.3  yr      Date      Observation date
       9  A1    ---     n_Date    [*] In stt89.dat, 1896.  for 1896-1898
  10- 14  F5.1  deg     PA        ? Observed position angle
  15- 16  A2    ---     n_PA      [?r*s ed] Note on PA (1)
  18- 22  F5.3  arcsec  Sep       ? Observed separation
  23- 24  A2    ---     n_Sep     [:e?o ] Note on Sep (2)
  26- 27  I2    ---     Nobs      ? Number of observations
      28  A1    ---     ---       [,]
  29- 30  I2    ---     Nobs2     ? Second number of observations
      31  A1    ---     n_Nobs    [m] m: many nights
  32- 80  A49   ---     Obs       Observators?
  82- 86  F5.1  deg     theta     (O-C) on PA
  88- 93  F6.3  arcsec  rho       ? (O-C) on Sep
      94  A1    ---     u_rho     [)] Uncertainty flag on the residuals

Note (1): r: round
          *: perhaps elong. in P.A. 285
          s: single
         ed: elongation doubtful
Note (2): e: elong
          o: oval


Acknowledgements: A. Alzner

(End)                                         Patricia Bauer [CDS]   05-May-1998