Revised Orbit for the Single Line Spectroscopic Binary Theta Draconis

Details Revised Orbit for the Single Line Spectroscopic Binary Theta Draconis Revised Orbit for the Single Line Spectroscopic Binary Theta Draconis

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.0814s&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #08.14; Bulletin of the American Astronomical Society, Vol. 34, p.655

Astronomy and Astrophysics

Astronomy

Scientific paper

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

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