unseen companion star

noun

: a member of a binary or multiple star system that is known to exist only by its gravitational effect on the visible components whose apparent motions it usually alters in a cyclic manner

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Dictionary Entries Near unseen companion star

Cite this Entry

“Unseen companion star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unseen%20companion%20star. Accessed 2 Mar. 2024.

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