The Phases Differential Astrometry Data Archive. 2. Updated Binary Star Orbits and a Long Period Eclipsing Binary

Abstract

Differential astrometry measurements from the Palomar High-precision Astrometric Search for Exoplanet Systems have been combined with lower precision single-aperture measurements covering a much longer timespan (from eyepiece measurements, speckle interferometry, and adaptive optics) to determine improved visual orbits for 20 binary stars. In some cases, radial velocity observations exist to constrain the full three-dimensional orbit and determine component masses. The visual orbit of one of these binaries?α Com (HD 114378)?shows that the system is likely to have eclipses, despite its very long period of 26 years. The next eclipse is predicted to be within a week of 2015 January 24.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2010
Accession Number
ADA534090

Entities

People

  • Benjamin F. Lane
  • Bernard F. Burke
  • J. O'connell
  • M. M. Colavita
  • M. Shao
  • M. Williamson
  • Maciej Konacki
  • Matthew W. Muterspaugh
  • Shrinivas Kulkarni
  • William I. Hartkopf

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Accuracy
  • Adaptive Optics
  • Binary Stars
  • California
  • Coverings
  • Geometry
  • Interferometers
  • Jet Propulsion
  • Measurement
  • Observation
  • Observatories
  • Optics
  • Physical Properties
  • Radial Velocity
  • Standards
  • Stars
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics

Technology Areas

  • Space