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V/39                4th Catalog of Orbits of Visual Binaries   (Worley+, 1983)

The Fourth Catalog of Orbits of Visual Binary Stars Worley C.E., Heintz W.D. <Publ. U.S. Naval Obs. (2) 24, part VII (1983)> =1983PUSNO..24g...1W (SIMBAD/NED RefCode)
ADC_Keywords: Binaries, orbits ; Stars, double and multiple Description: The Finsen-Worley Catalog (1970), supplemented by all subsequently published orbits known to Worley and Heintz as of 1 July 1982 formed the basis for the present compilation. Practically all stars having visual orbits were reobserved in the preceding decade, often repeatedly either with micrometers or with speckle interferometers. Astrometric solutions are included but only if they were judged to be relatively certain. Orbits with period greater than 4000 years and hyperbolic orbits were rejected as being unreliable. The catalog contains 928 orbits of 847 systems (counting triples as two systems). There are 23 orbits of unresolved systems. The catalog contains for each system the names of the star and the components involved, the 1900 position, the ADS number, the magnitude and spectral type for each component, the orbital elements, the equinox of the node, the quality of the orbit, the date of the last observation, the inclusive dates for which an ephemeris is given by the author, the computer of the orbit, and a reference. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file intro.doc 80 263 Introduction to the Catalogue catalog.dat 262 933 4th Catalogue of Orbits of Visual Binary Stars notes.dat 79 612 Notes about flagged orbits
Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
2- 3 I2 h RAh Hours RA, 1900.0 5- 8 F4.1 min RAm Minutes RA, 1900.0 11 A1 --- DE- Sign Dec, 1900.0 12- 13 I2 deg DEd Degrees Dec, 1900.0 15- 16 I2 arcmin DEm Minutes Dec, 1900.0 17 A1 --- Note [*] '*' indicates a note in file "notes" 20- 25 A6 --- ADS Aitken's Double Star Catalog (ADS) designation 27- 31 F5.2 mag MagA ? Magnitude of component A 32 A1 --- n_MagA [V] 'V' if MagA is variable 34- 38 F5.2 mag MagB ? Magnitude of component B 39 A1 --- n_MagB [V] 'V' if MagB is variable 42- 50 F9.4 a Period Period of the binary star orbit 51- 57 F7.3 arcsec Axis ? Semi-major axis of the orbit 60- 65 F6.2 deg Incl [0/180] Inclination (i) of the orbit 68- 73 F6.2 deg Omega [0/360[? Position of the Node 74 A1 --- n_Omega [*] '*' if Omega is identified as the ascending node 78 A1 --- n_Grade [A] 'A' indicates ambiguities (see intro) 79 I1 --- Grade [1/5]? The grade from 1 (definitive) to 5 (indeterminate), see file intro 82- 85 I4 a DateObs ? Date of last observation used in computation 89-132 A44 --- Author Computer of the orbit 133-159 A27 --- Name Common names of the star 160-166 A7 --- SpTypeA Spectral type of component A 167-173 A7 --- SpTypeB Spectral type of component B (1) 175-182 F8.3 a PeriT ? Time of periastron passage 184-189 F6.3 --- Ecc [0/1]? Eccentricity 192-197 F6.2 deg omega [0/360[? Longitude of Peri reckoned from Omega 200-203 I4 a Eqomega ? Equinox of Omega 210-218 A9 --- Ephem Inclusive dates of ephemeris 221-262 A42 --- Ref Text of bibliographic reference
Note (1): An '*' following this value indicates the spectral types have been inferred from a combined spectrum and a known magnitude difference.
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 10 A10 --- RADec Name based on 1900 position, form "HHMMm+DDMM" 13- 79 A67 --- Note Notes
References: Finsen, W.S. and Worley, C.E., 1970, Republic Obser.. Circ. 7, 203 Historical Notes: * From the "Selected Astronomical Catalogs" Vol. 1 CD-ROM (1992), directory /combined/binorbit * 02-Mar-1995: hours of RA (29) in record # 793 corrected * 23-Sep-1996: aligned record #642 (Gail L. Schneider) * 16-Oct-1996: corrected the "Note" flag (catalog) and RADec values (notes) to ensure the correspondance.
(End) Francois Ochsenbein [CDS Catalogues Service] 02-Mar-1995
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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