Definition of visual binary in English:

Share this entry

visual binary

noun

Astronomy
A binary star of which the components are sufficiently far apart to be resolved by an optical telescope.
Example sentences
  • 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.
Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.