Orbits of new Hipparcos binaries. I
Weigelt, G.; Hofmann, K. -H.; Schertl, D.; Balega, Y. Y.; Balega, I. I.; Shkhagosheva, Z. U.; Pluzhnik, E. A.
Russia, Germany
Abstract
We present first orbits for 6 new Hipparcos binaries. The orbits were determined from speckle interferometric measurements collected mainly at the6m BTAtelescope of the Special Astrophysical Observatory in Zelenchuk. Three of the systems, HIP 11352, HIP 14075 and HIP 14230, have late G- or early K-type components, while HIP 14669 = GJ 125, HIP 106972 = GJ 4210 and HIP 111685 = GJ 4287 have M-type components. The periods of the orbits are in the range of6-28years. Mass sums and their errors are derived for the systems. The Hipparcos parallax error is the dominating error source of themass determination.
Based on observations made with the 6-m BTA telescope, which is operated by the Special Astrophysical Observatory, Russia.