spectroscopic binary
Double-star system so close that the two stars can only be distinguished spectroscopically
Nº Q1993624 ★
Common · Knowledge
spectroscopic binary
Double-star system so close that the two stars can only be distinguished spectroscopically
Text: Wikidata, CC BY-SA 4.0. · Image: Merikanto (CC BY-SA 4.0) ·
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