| 11. | Despite this, it is suspected of being a spectroscopic binary star.
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| 12. | He also found an improved method of determining the orbits of binary stars.
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| 13. | This binary star system is approximately 1156 light years from Earth.
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| 14. | ADS 16402 is a binary star system in Lacerta, around which a cork.
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| 15. | He extensively studied binary stars and was recognized for this work.
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| 16. | It may or may not be a close binary star system.
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| 17. | At the Jagiellonian University Observatory he made systematic observations of eclipsing binary stars.
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| 18. | There are several other dimmer double and binary stars in Cygnus.
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| 19. | This configuration is similar to that of a binary star system.
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| 20. | It is a gravity cut-off point of the binary star system.
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