10 YEARS OF ECLIPSE TIMINGS TO REFINE THE PERIOD OF HR-6469=V819-HER

Citation
R. Wasson et al., 10 YEARS OF ECLIPSE TIMINGS TO REFINE THE PERIOD OF HR-6469=V819-HER, The Astronomical journal, 107(4), 1994, pp. 1514-1520
Citations number
9
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046256
Volume
107
Issue
4
Year of publication
1994
Pages
1514 - 1520
Database
ISI
SICI code
0004-6256(1994)107:4<1514:1YOETT>2.0.ZU;2-U
Abstract
New times of minimum of the eclipsing binary in the triple system HR 6 469=V819 Her, 90 altogether between 1982 and 1992 by 21 different obse rvers at 17 different observatories in three different countries, are presented. After correction for the time-delay effect expected to resu lt from the eclipsing pair's motion in the 5.5 year orbit, fitting by least squares yields the following linear ephemeris for times of prima ry minimum: JD (hel.)=2,448,546.5991+2.2296296d E. A complete UBV ligh t curve obtained in the summer of 1992 at Braeside Observatory is desc ribed as well, the data having been sent to the IAU Comm. 27 Archive, as file No. 271.