Magnitude 6.74 Apparent magnitude (V) 6.74 | ||
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HD 178911 is a triple star system in the constellation Lyra. The secondary star (designated as HD 178911 B) has an apparent magnitude of 6.74 and a spectral type of G1V, which is very similar to our Sun at a distance of 160 light years. The age of the star is slightly older and have significantly higher metallicity than our Sun.
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Stellar system
The HD 178911 system consists of HD 178911A and HD 178911B in a 1300-day orbit with HD 178911B being a more distant common proper motion companion and HD 178911A is in fact a tight binary pair consisting of HD 178911Aa and Ab. An additional companion HD 178911C is a chance optical alignment and is not part of the system.
Planetary system
In 2001 an extrasolar planet was discovered in orbit around HD 178911B.
References
HD 178911 Wikipedia(Text) CC BY-SA