Iota Trianguli Australis [SEP] constellation
Iota Trianguli Australis
Iota Trianguli Australis (ι Trianguli Australis) is a binary star system in the constellation Triangulum Australe. It is visible to the naked eye with a combined apparent visual magnitude of +5.27. Based upon an annual parallax shift of 25.77 mas as seen from the Earth, it is located around 127 light years from the Sun. The system appears to be moving closer to the Sun with a radial velocity of around −6 km/s. It shows itself to be composed of a yellow and a
Iota Trianguli
Iota Trianguli, Latinized from ι Trianguli, is quadruple star system in constellation of Triangulum. It is approximately 290 light years from Earth.
Both components of ι Trianguli are spectroscopic binaries and the brighter pair is variable. It has been given the variable star designation TZ Trianguli. The variations are due to the ellipsoidal shape of the stars as they rotate, and also it is classified as an RS Canum Venaticorum variable.