20 Orbits of binaries based on soar speckle observations

ABSTRACT New observational data obtained during the 2018, 2019, and 2020 speckle runs with 4.1-m Southern Astrophysical Research (SOAR) telescope located at Cerro Pachón (Chile) allowed us to recalculate orbits of visual binaries: WDS 00277-1625 (YR 1 Aa,Ab), 00462-2214 (RST4155), 03124-4425 (JC 8), 07427-3510 (HDS 1091), 10093+2020 (A2145), 10116+1321 (HU 874 AB), 10217-0946 (BU 25), 11585-2350 (RST 3767 13117-2633 (FIN 305), 13305+0729 (A 1789), 16458-0046 (A1141). In addition, we present first calculated for following 07303-5657 105), 09110-1929 (I 824), 12111-5302 1604), 14592-4206 2116 15157-2736 350), 15493+0503 1126), 16402-2800 (VOU 44 18126+1224 2570). All them are placed below Dec. + 21° majority main-sequence stars. Except in cases giant components or close triple systems, ANAPAR method was used order obtain precise dynamical parallaxes individual masses. These were compared those by Gaia and/or Hipparcos satellites. case FIN 305, two different orbital solutions. Also, using given these orbits, have been able calculate luminosity systems. Said luminosities allow indicate an approximate age situating within Hertzsprung-Russell (HR) diagram. a commentary each binary about physical properties studied binaries has included.