Observations of the substellar object were performed on January 25, 1998 where a faint red companion was present 16.2 arc seconds southwest of the star.

It has a faint companion located 31 arcseconds away with an apparent magnitude of +11.3.

Castor also has a faint and widely separated companion, which is also a spectroscopic binary.

There is a fainter optical companion located about 50 arcminutes north of this star.

In addition, HD93129A itself has recently been found to be a close binary, with the fainter companion being yet another very hot O3 star.

The fainter companion is a magnitude 7.43 star at an angular separation of 0.840 arcseconds.

Procyon's a double star; that faint companion gets up in the sky and does tricky things to the camera.

And in their midst blazed a dazzling star with a faint companion.

"Sadalsuud" appears to be a single star to the naked eye, but when viewed with a telescope is seen to have two faint optical companions.

Its fainter companion is a yellow-white F-type dwarf with an apparent magnitude of +7.72.