Publications of the MPIfR
Optical & Infrared
Interferometry Group
Balega, I.I., Balega, Y.Y., Hofmann,
K.-H., Malogolovets, E.V., Schertl, D., Shkhagosheva, Z.U., Weigelt, G.
Orbits of new Hipparcos binaries.II.
Astronomy & Astrophysics, 448, pg.703-707 (2006)
Abstract
We continue the presentation of new orbits for Hipparcos binaries
determined from regular speckle interferometric
observations. Most of the data were collected
in the period between 1998.77 and 2004.82 using the 6 m
BTA telescope of the Special Astrophysical Observatory
in Zelenchuk. New orbits are presented for six pairs: HIP 4809, HIP
4849, HIP 5531, HIP 19206, HIP 105947, and HIP 114922.
One of the pairs, HIP 114922, has M dwarf components orbiting with a
period of 19.72 yr. Two binaries, HIP 4809
and HIP 5531, have luminosity class IV components.
The periods of the orbits range from 7.30 yr
to 28.99 yr.
All of the orbits can be considered definitive; however, the
total mass error for the systems remains high,
mainly due to
Hipparcos parallax error.
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