{
  "id": "1606.08182",
  "version": "v1",
  "published": "2016-06-27T09:59:23.000Z",
  "updated": "2016-06-27T09:59:23.000Z",
  "title": "Photocentric orbits from a direct combination of ground-based astrometry with Hipparcos II. Preliminary orbits for six astrometric binaries",
  "authors": [
    "G. A. Gontcharov",
    "O. V. Kiyaeva"
  ],
  "comment": "6 figures, 5 tables",
  "journal": "New Astronomy 15 (2010) 324-331",
  "doi": "10.1016/j.newast.2009.09.006",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "Based on a direct combination of the Hipparcos data with astrometric ground-based observational catalogues having epochs between 1938 and 1999 the preliminary orbits and component masses are calculated for 6 binaries with no previous orbit calculation: $\\iota$~Vir (HIP~69701) with period of 55 years, photocentric semi-major axis of 200 mas, relative semi-major axis of 830 mas and a dwarf secondary of 0.6 solar masses; $\\gamma$~UMa (HIP~58001) -- 20.5 years, 90 mas, 460 mas and a dwarf secondary of 0.8 solar masses; $\\kappa$~Del (HIP~101916) -- 45 years, 100 mas, 520 mas and a dwarf secondary of 0.4 solar masses; 20~Oph (HIP~82369) -- 35.5 years, 140 mas, 460 mas and a dwarf secondary of 0.8 solar masses; $\\mu$~Ser (HIP~77516) -- 36 years, 110 mas, 350 mas and a secondary of 2.3 solar masses; as well as a possible new component of Mizar~A ($\\zeta$~UMa, HIP~65378) -- 36.5 years, 180 mas, 780 mas, 1.5 solar masses. The latter may be a pair of dwarfs.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-06-27T09:59:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "solar masses",
      "preliminary orbits",
      "direct combination",
      "astrometric binaries",
      "dwarf secondary"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}