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J/AJ/122/1586       Speckle interferometry at USNO. VII.     (Mason+, 2001)
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Speckle interferometry at the US naval observatory. VII.
    Mason B.D., Hartkopf W.I., Wycoff G.L., Holdenried E.R., Platais I.,
    Rafferty T.J., Hall D.M., Hennessy G.S., Urban S.E., Pohl B.L.
   <Astron. J. 122, 1586 (2001)>
   =2001AJ....122.1586M
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ADC_Keywords: Stars, double and multiple ; Interferometry
Keywords: binaries: general - binaries: visual - techniques: interferometric

Abstract:
    The results of 2014 speckle interferometric observations of double
    stars, made with the 26 inch (66cm) refractor of the US Naval
    Observatory, are presented. These observations are averaged into 1266
    mean positions and range in separation from 0.21" to 13.41", with a
    mean separation of 2.61". his is the seventh in a series of papers
    presenting measures obtained with this system and covers the period
    2000 January 10 through December 8.

File Summary:
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 FileName  Lrecl  Records  Explanations
--------------------------------------------------------------------------------
ReadMe        80        .  This file
table1.dat    62     1065  Speckle Interferometric Measurements of Double Stars
table2.dat   132      202  Speckle Interferometric Measurements and Residuals
                            to Systems with Orbits
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See also:
   I/237  : The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
   J/AJ/117/1905 : Speckle interferometry at USNO. II. (Germain+, 1999)
   J/AJ/117/2511 : Speckle interferometry at USNO. III (Germain+, 1999)
   J/AJ/118/1395 : Speckle interferometry at USNO. IV. (Douglass+, 1999)
   J/AJ/119/3071 : Speckle interferometry at USNO. V. (Douglass+, 2000)
   J/AJ/120/1120 : Speckle interferometry at USNO. VI. (Mason+, 2000)

Byte-by-byte Description of file: table1.dat
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   Bytes Format Units   Label     Explanations
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   1-  2  I2    h       RAh       Right Ascension (J2000)
   4-  7  F4.1  min     RAm       Right Ascension (J2000)
       9  A1    ---     DE-       Sign of the Declination (J2000)
  10- 11  I2    deg     DEd       Declination (J2000)
  13- 14  I2    arcmin  DEm       Declination (J2000)
  16- 28  A13   ---     Disc      Discoverer designation
  30- 38  F9.4  yr      Epoch.Y   Epoch of observation
  40- 44  F5.1  deg     PA        Position angle
      45  A1    ---   u_PA        [:] Uncertainty flag for PA
  47- 51  F5.2  arcsec  Sep       Separation
      52  A1    ---   u_Sep       [:] Uncertainty flag for Sep
      54  I1    ---     Num       Number of observations contained in the mean
  56- 61  A6    ---     Note      Object notes (1)
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Note (1): A number indicates the number of years since the system was last
     measured and only given for systems with >~50years.
     C = Confirming observation;
     x = large separation change since Hipparcos measure;
     y = large change in position since last measure;
     z = disagrees with Hipparcos measure, but matches the reprocessing of
          Fabricius & Makarov (2000, Cat. <J/A+AS/144/45>) quite well.
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Byte-by-byte Description of file: table2.dat
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   Bytes Format Units   Label     Explanations
--------------------------------------------------------------------------------
   1-  2  I2    h       RAh       Right Ascension (J2000)
   4-  7  F4.1  min     RAm       Right Ascension (J2000)
       9  A1    ---     DE-       Sign of the Declination (J2000)
  10- 11  I2    deg     DEd       Declination (J2000)
  13- 14  I2    arcmin  DEm       Declination (J2000)
  16- 28  A13   ---     Disc      Discoverer designation
  30- 38  F9.4  yr      Epoch.Y   Epoch of observation
  40- 44  F5.1  deg     PA        Position angle
  46- 49  F4.2  arcsec  Sep       Separation
      51  I1    ---     Num       Number of observations contained in the mean
  53- 57  F5.1  deg     (O-C)PA   The O-C position angle residual
  59- 63  F5.2  arcsec  (O-C)Sep  The O-C separation residual
      65  A1    ---   f_Ref       [*] Indicates system used in characterizing
                                  errors
  67-132  A66   ---     Ref       Orbit reference
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History:
    From electronic version of the journal

References:
   Douglass et al., Paper I     1997ApJS..111..289D
   Germain et al.,  Paper II    1999AJ....117.1905G, Cat. <J/AJ/117/1905>
   Germain et al.,  Paper III   1999AJ....117.2511G, Cat. <J/AJ/117/2511>
   Douglass et al., Paper IV    1999AJ....118.1395D, Cat. <J/AJ/118/1395>
   Douglass et al., Paper V     2000AJ....119.3071D, Cat. <J/AJ/119/3071>
   Mason et al.,    Paper VI    2000AJ....120.1120M, Cat. <J/AJ/120/1120>
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(End)                    Greg Schwarz [AAS], Patricia Bauer [CDS]    14-Jan-2002