First Orbits for Five Binaries

Details First Orbits for Five Binaries First Orbits for Five Binaries

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aj....136.1746c&link_type=abstract

The Astronomical Journal, Volume 136, Issue 4, pp. 1746-1752 (2008).

Astronomy and Astrophysics

Astronomy

2

Binaries: Visual, Stars: Individual: Hds 102: Egg 2Aa: Fin 382: Fin 322: Fin 366

Scientific paper

In this paper, new orbital elements are given for five binaries. For all of them—Washington Double Star (WDS) 00469+4339 = HDS 102, WDS 02186+4017 = EGG 2Aa, WDS 05542 - 2909 = FIN 382, WDS 06493- 0216 = FIN 322, and WDS 11495 - 4604 = FIN 366—the orbital elements are calculated for the first time. One of the five binaries, HDS 102, was discovered during the Hipparcos mission, whereas the remaining four were discovered between 1952 and 1965. All measured separations are less than 0farcs3 and most of the measures were done using the interferometric techniques. The orbital periods calculated are between 28 and 109 years. In addition to the orbital elements, the (O - C) residuals in θ and ρ, masses, dynamical parallaxes, absolute magnitudes, and ephemerides for the next five years are also given in this paper.

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