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symbo symbo
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Posts: 1970
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7 years ago
To determine the sum of the masses of a visual binary star system, we need to measure
A)   the temperatures and periods of the stars.
B)   the distance from us and the semimajor axis of the orbit of one star relative to the other.
C)   the period and the semi-major axis.
D)   the temperatures and the distance from us.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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hyponoticahyponotica
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Posts: 1396
7 years ago
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symbo Author
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7 years ago
This did it for me! Thank you
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