J/PAZh/??/??? CCD observations of visual double stars. (Izmailov 2015) ================================================================================ Astrometric CCD observations of visual double stars at Pulkovo observatory with 26 inch refractor in 2007 – 2014. Izmailov I. S. = = ================================================================================ ADC_Keywords: Binaries, visual; Astrometric data Keywords: visual double stars, Positional data Abstract: We present 15184 astrometric measurements of 322 visual double stars made by CCD from 2007 to 2014 with the 26-inch refractor of the Pulkovo observatory. Angular separation and position angle with erros are given. These observations have angular separations in the range from 1".1 to 78".6, with a median angular separation of 7".3. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 77 15184 Positional data of separate nights table2.dat 77 1847 Yearly average positions table3.dat 53 50 The O-C (observed minus calculated) residuals Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 A10 --- WDS WDS identifier (Cat. B/wds) 12-15 A4 --- Comp Components when more than 2 17-21 I5 --- ADS ADS number 23-28 F6.3 yr Epoch Epoch of observation 30-32 I3 --- N Number of CCD frames 34-41 F8.4 deg Theta Position Angle (1) 43-49 F7.4 arcsec Rho Separation 51-56 F6.4 deg e_Theta Standard deviation in Theta 58-63 F6.4 arcsec e_Rho Standard deviation in Rho 65-70 F6.4 arcsec e_Theta1 Standard deviation of one CCD image in Theta 72-77 F6.4 arcsec e_Rho1 Standard deviation of one CCD image in Rho Byte-by-byte Description of file: table2.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 A10 --- WDS WDS identifier (Cat. B/wds) 12-15 A4 --- Comp Components 17-21 I5 --- ADS ADS number 23-28 F6.3 yr Epoch Epoch of observation 30-32 I3 --- N Number of CCD frames 34-41 F8.4 deg Theta Position Angle (1) 43-49 F7.4 arcsec Rho Separation 51-56 F6.4 deg e_Theta Standard deviation in Theta 58-63 F6.4 arcsec e_Rho Standard deviation in Rho 65-70 F6.4 arcsec e_Theta1 Standard deviation of one night in Theta 72-77 F6.4 arcsec e_Rho1 Standard deviation of one night in Rho -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1-10 A10 --- WDS WDS identifier (Cat. B/wds) 12-13 A2 --- Comp Components 15-21 F7.4 arcsec (O-C)Rho O-C separation residual 23-29 F7.4 deg (O-C)Theta O-C position angle residual 31-36 F5.2 marcsec/yr (O-C)dRho/dt O-C rate of change separation residual 38-44 F7.4 deg/yr (O-C)dTheta/dt O-C rate of change position angle res. 46-53 A8 --- Ref Observation reference (2) -------------------------------------------------------------------------------- Note (1): The position angle has not been corrected for precession, and is thus based on the equinox for the epoch of observation. Note (2): See http://ad.usno.navy.mil/wds/wdsnewref.txt Acknowledgements: Igor Izmailov, i_izmailov(at)mail.ru ================================================================================ (End) Igor Izmailov [Pulkovo Obs.] 12-Feb-2015