PI: Andrei Tokovinin, NOAO, email@example.com
Address: CTIO, Casilla 603 AURA, La Serena, Chile
CoI: Brian D. Mason, USNO
CoI: William I. Hartkopf, USNO
Title: Speckle interferometry of ``fast'' binaries
Abstract: Relative positions and magnitude differences of 400 close binaries with fast orbital motion (periods less than 30 yr) will be measured with high accuracy during 2014-2016 to determine or improve their orbital elements. This will contribute to the statistics of orbital elements and masses, enable dynamical studies of systems that present particular interest, and disentangle orbital motion from the astrometric parameters (parallax and proper motion).
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360