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Definition of visual binary in English: visual binarynoun Astronomy A binary star of which the components are sufficiently far apart to be resolved by an optical telescope. Example sentencesExamples - To the southeast of Algol lies a visual binary system, and surrounding this binary system is a patchwork of various stars making up the corner of the Milky Way called the Western Link.
- These were visual binaries - stars that could be resolved by eye using a good instrument.
- The telescope, although not fully functional, is normally used for research on visual binary stars and for undergraduate student assignments.
- Sirius is a visual binary, and with her two different eyes, it could be cool.
- These spectroscopic binary stars are generally much closer to each other than visual binaries, as close as a few hundredths of an astronomical unit.
Definition of visual binary in US English: visual binarynoun Astronomy A binary star of which the components are sufficiently far apart to be resolved by an optical telescope. Example sentencesExamples - The telescope, although not fully functional, is normally used for research on visual binary stars and for undergraduate student assignments.
- These were visual binaries - stars that could be resolved by eye using a good instrument.
- These spectroscopic binary stars are generally much closer to each other than visual binaries, as close as a few hundredths of an astronomical unit.
- Sirius is a visual binary, and with her two different eyes, it could be cool.
- To the southeast of Algol lies a visual binary system, and surrounding this binary system is a patchwork of various stars making up the corner of the Milky Way called the Western Link.
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