Ten years of eclipse timings to refine the period of HR 6469=V819 HER

Details Ten years of eclipse timings to refine the period of HR 6469=V819 HER Ten years of eclipse timings to refine the period of HR 6469=V819 HER

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....107.1514w&link_type=abstract

The Astronomical Journal, vol. 107, no. 4, p. 1514-1520

Astronomy and Astrophysics

Astronomy

6

Eclipsing Binary Stars, Ephemerides, Light Curve, Photometry, Spectroscopy, Variable Stars, Astronomical Observatories, Modulation, Radial Velocity, Telescopes, Time Measurement

Scientific paper

New times of minimum of the eclipsing binary in the triple system HR 6469 = V819 Her, 90 altogether between 1982 and 1992 by 21 different observers at 17 different observatories in three different countries, are presented. After correction for the time-delay effect expected to result from the eclipsing pair's motion in the 5.5 year orbit, fitting by least squares yields the following linear ephemeris for times of primary minimum: JD (hel.) =2,448,546.5991 + 2.2296296d E. A complete Ultraviolet-Blue-visual (UBV) light curve obtained in the summer of 1992 at Braeside Observatory is described as well, the data having been sent to the International Astronomical Union (IAU) Comm. 27 Archive, as file No. 271.

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