a binary star that can be recognized as such because of its undulating proper motion.
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Origin of astrometric binary
First recorded in 1975–80
Words nearby astrometric binary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Scientific definitions for astrometric binary
[ ăs′trə-mĕt′rĭk ]
See under binary star.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.