Theta Trianguli Australis
θ Trianguli Australis, Latinized as Theta Trianguli Australis, is a single star in the southern constellation of Triangulum Australe. It is visible to the naked eye as a dim, yellow-hued star with an apparent visual magnitude of +5.50. The star is located about 334 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +10 km/s.

This is an evolved G/K-type giant star with a stellar classification of G8-K0 III. The interferometry-measured angular diameter of the primary component is , which, at its estimated distance, equates to a physical radius of about 11 times the radius of the Sun. The star is radiating 79 times the Sun's luminosity from its photosphere at an effective temperature of 5,039 K.

References

G-type giants
K-type giants
Triangulum Australe
Trianguli Australis, Theta
Durchmusterung objects
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