Astrophysics (index)about

visual binary

(binary star system in which both stars can be seen)

A visual binary is a binary star system where, perhaps with magnification, two stars can be distinctly seen.

It is one of a number binary-star classes based upon ways the star is determined to be binary. Others:

(star type,binary star type)

Referenced by:
astrometric binary
binary star
eclipsing binary
projected separation
spectroscopic binary
spectrum binary
stellar parameter determination