Sentences with phrase «motion of the binary system»
Not exact matches
This binary star system was listed by Stephen Groombridge (1755 - 1834), whose «A Catalog of Circumpolar Stars» was published posthumously in 1838, but its large proper motion was not discovered and measured until 1860.
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Two of these candidates are common proper motion companions to nearby main sequence stars; if confirmed as binaries, these would be rare benchmark systems with the potential to stringently test ultracool evolutionary models.