AAS 200th meeting, Albuquerque, NM, June 2002
Session 8. Binary Stars
Display, Monday, June 3, 2002, 9:20am-6:30pm, SW Exhibit Hall

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[8.14] Revised Orbit for the Single Line Spectroscopic Binary Theta Draconis

M. H. Slovak (LSU), T. G. Barnes (Univ. Texas, Austin)

Revised orbital elements are presented for the bright (V = 4.01) single line spectroscopic binary Theta Draconis = HD 144284 = BD+58 1608 = SAO 29765 (F8IV) using nearly eighty years of radial velocity data. The most recent measurements were obtained during calibration of the McDonald Observatory 2.1m coude radial velocity spectrometer.

Revised Orbital Elements

P = 3.0708 days

K = 26.19 ± 1.30 km/s

Gamma = -11.35 ± 0.89 km/s

e = 0.035 ± 0.050

Omega = 128.2 ± 84.5 degrees

T = JD 2443943.83 ± 0.72

asin(i)= 0.073 ± 0.004 AU

The author(s) of this abstract have provided an email address for comments about the abstract: mslova1@lsu.edu

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.