No companions have yet been detected in orbit around this star, and it remains uncertain whether or not it possesses a dust ring.
The variability is attributed to large-scale magnetic activity on the chromosphere (in the form of starspots) combined with a rotational period that moved the active regions into (and out of) the line of sight.
This results in low amplitude variability of 12 Ophiuchi's luminosity.
The star also appears to display rapid variation in luminosity, possibly due to changes in the starspots.
The high rotation period and active chromosphere are indicative of a relatively young star.