with a stellar classification of k3 iii, rho draconis is a normal giant star that is past the first dredge-up phase of its post-main sequence evolution. it has the peculiar spectrum of a cn star, showing abnormal line strengths for cyanogen and calcium. the star has expanded to around 28 times the sun's radius and it is radiating 402 times the solar luminosity from its photosphere at an effective temperature of 4,370 k.