- Double or multiple star
- Infra-Red source
36 Ophiuchi is a triple star system 19.5 light years from Earth. It is in the constellation Ophiuchus.
The primary and secondary stars are nearly identical orange main sequence dwarfs of spectral type K2/K1; the tertiary star is an orange main sequence dwarf of spectral type K5.
Star C is separated from the A-B pair by 700 arc seconds, compared to a minimum of 4.6 arcsec for A-B, so its effect on the movements of the A-B pair is small. A and B have active chromospheres.This article uses material from the Wikipedia article "36 Ophiuchi", which is released under the Creative Commons Attribution-Share-Alike License 3.0.