New set of orbits visual double stars. (Izmailov 2022) ================================================================================ ================================================================================ ADC_Keywords: Binaries, visual; Orbits Keywords: visual double stars, Orbits Abstract: File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 60 184 Accurate masses of visual binary stars table2.dat 60 850 All masses of visual binary stars multiplied by parallax^3 table3.dat 168 850 Orbital elements. table4.dat 110 85000 Sets of possible orbits. Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1-10 A10 --- WDS WDS identifier (Cat. B/wds) 12-18 A7 --- Disc Discoverer & Number 20-21 A2 --- Comp Components 23 A1 --- tof Type of orbits * 25-30 F6.1 Msun M Sum of mass of stars in mass of Sun 32-37 F6.1 Msun u_M Upper bound of 68.27% confidence interval for sum of mass 39-44 F6.1 Msun l_M Lower bound of 68.27% confidence interval for sum of mass 46-53 F8.4 marcsec pi Trigonometric parallax used to determine mass from Gaia 55-60 F6.4 marcsec e_pi error of parallax -------------------------------------------------------------------------------- Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1-10 A10 --- WDS WDS identifier (Cat. B/wds) 12-18 A7 --- Disc Discoverer & Number 20-24 A5 --- Comp Components 26 A1 --- tof Type of orbits * 25-37 F10.8 Msun*arcsec^3 M Sum of mass of stars in mass of Sun multiplied by parallax^3. 39-48 F10.8 Msun*arcsec^3 u_M Upper bound of 68.27% confidence interval for sum of mass 50-59 F10.8 Msun*arcsec^3 l_M Lower bound of 68.27% confidence interval for sum of mass -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat --------------------------------------------------------------------------------- Bytes Format Units Label Explanations --------------------------------------------------------------------------------- 1- 10 A10 --- WDS WDS identifier (Cat. B/wds) 12- 18 A7 --- Disc Discoverer & Number 20- 24 A5 --- Comp Components 26 A1 --- tof Type of orbits * 28- 37 F10.4 yr P Period 39- 47 F9.4 yr e_P Formal error in P 49- 56 F8.5 arcsec a Semi-major axis (a) 58- 65 F8.5 arcsec e_a Error in a 67- 73 F7.3 deg i Inclination (i) 75- 80 F6.3 deg e_i Error in i 82- 88 F7.3 deg Omega Node (Omega) 90- 95 F6.3 deg e_Omega Error in Omega 97 A1 --- idntf [*] An identified ascending node. 99-108 F10.5 yr T The time of periastron passage (T) in fractional Besselian year 110-118 F9.5 yr e_T Error in T 120-133 F14.12 --- e Eccentricity (e) 135-148 F14.12 --- e_e Error in e 150-156 F7.3 deg omega Longitude of periastron (omega) 158-163 F7.3 deg e_omega Error in omega 165-168 I4 yr DL Date of the last observation used in the orbit calculation --------------------------------------------------------------------------------- Byte-by-byte Description of file: table4.dat --------------------------------------------------------------------------------- Bytes Format Units Label Explanations --------------------------------------------------------------------------------- 1- 10 A10 --- WDS WDS identifier (Cat. B/wds) 12- 18 A7 --- Disc Discoverer & Number 20- 24 A5 --- Comp Components 26 A1 --- tof Type of orbits * 28- 37 F10.4 yr P Period 39- 47 F9.5 arcsec a Semi-major axis (a) 49- 55 F7.3 deg i Inclination (i) 57- 63 F7.3 deg Omega Node (Omega) 65- 74 F10.4 yr T The time of periastron passage (T) in fractional Besselian year 76- 89 F14.12 --- e Eccentricity (e) 91- 97 F7.3 deg omega Longitude of periastron (omega) 99-110 F13.11 Msun*arcsec^3 M Sum of mass of stars multiplied by parallax^3^ --------------------------------------------------------------------------------- Note (1): tof = 1 The orbit is determined by Thiele-Innes method using positions and proper motions of components of double star from Gaia. = 2 Data from Gaia were not used to determine the orbit. = 3 The orbit is determined by the AMP method using difference of the radial velocities of the components. = 4 In addition to the difference in radial velocities, the differences in the radial accelerations of the components are used. -------------------------------------------------------------------------------- Acknowledgements: Igor Izmailov, i_izmailov(at)mail.ru ================================================================================ (End) Igor Izmailov [Pulkovo Obs.] 02-Feb-2022