visual binary
Americannoun
Example Sentences
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A binary star system in which both of the stars can be seen with a telescope is called a visual binary.
From Textbooks ● Oct. 13, 2016
Which is easier to observe at large distances—a spectroscopic binary or a visual binary?
From Textbooks ● Oct. 13, 2016
Through a telescope, as Riccioli discovered in 1650, Mizar can be seen to have another, closer companion that does orbit it; Mizar is thus a visual binary.
From Textbooks ● Oct. 13, 2016
The two components that make up this visual binary, known as Mizar A and Mizar B, are both spectroscopic binaries.
From Textbooks ● Oct. 13, 2016
Alpha Centauri—the nearest star to the earth—is a visual binary, the component bodies revolving around each other in a period of about eighty-one years.
From Astronomy of To-day A Popular Introduction in Non-Technical Language by Dolmage, Cecil Goodrich Julius
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