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HD 196050
Triple star system in the constellation Pavo From Wikipedia, the free encyclopedia
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HD 196050 is a triple star[9][3] system located in the southern constellation of Pavo. This system has an apparent magnitude of 7.50[2] and the absolute magnitude is 4.01.[2] It is located at a distance of 165 light-years (51 parsecs) from the Sun based on parallax, and is drifting further away with a radial velocity of +61 km/s.[1] It is also called by the Hipparcos designation HIP 101806.
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Characteristics
The primary component is a G-type main-sequence star with a stellar classification of G3V.[4] It has a quiescent chromosphere and does not appear to be variable.[9] The star has 18%[6] more mass than the Sun and a 46% greater size. It is around 2.5 billion years old with a higher than solar metallicity, and is spinning with a projected rotational velocity of 3 km/s.[5] The star is radiating 2.21[6] times the luminosity of the Sun from its photosphere at an effective temperature of 5,834 K.[6]
A faint co-moving companion star, designated component B, was detected based on observations during 2003–2004,[9] located 10.80″[3] to the south of the primary component. This corresponds to a projected separation of 7,511±22 AU.[9] The star is magnitude 10.62[3] A third companion, component C, was discovered in 2007, located about 0.4″ from component B.[10] It has a visual magnitude of 15.6.[3]
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Planetary system
In 2002, the Anglo-Australian Planet Search team announced the discovery of an extrasolar planet orbiting the star.[11] The discovery was independently confirmed by the Geneva Extrasolar Planet Search team.[7] In 2023, the inclination and true mass of HD 196050 b were determined via astrometry.[12]
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See also
References
Further reading
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