Iota Trianguli Australis
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| Observation data Epoch J2000.0 |
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|---|---|
| Constellation | Triangulum Australe |
| Right ascension | 16h 27m 57.3s |
| Declination | −64° 03' 29" |
| Apparent magnitude (V) | +5.28 |
| Distance | 132 ± 4 ly (40 ± 1 pc) |
| Spectral type | F4IV |
| Other designations | |
Iota Trianguli Australis (ι TrA / ι Trianguli Australis) is a triple star system in the constellation Triangulum Australe. It is approximately 132 light years from Earth.
The primary component, Iota Trianguli Australis A, is a spectroscopic binary with a mean apparent magnitude of +5.28. Both components of the binary star are yellow-white F-type stars and they have an orbital period of 39.8 days. One of the components of the binary is also classified as a Gamma Doradus type variable star, and the binary's brightness varies by 0.12 magnitudes over a period of 1.45 days. The third component of the star system, Iota Trianguli B, is a 10th magnitude star, 20 arcseconds away from the primary.
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