HIP 79431 b is a gas giant exoplanet in the habitable zone of an M-type star. It is an extrasolar planet discovered in 2010 by the W. M. Keck Observatory. The planet is discovered in an M-type dwarf star known as HIP 79431, which is located in the Scorpius constellation and is approximately 47 light-years away from Earth. It is 0.5 times more massive and 0.5 times larger than our Sun.
HIP 79431 b is an exoplanet that orbits the star HIP 79431, which is 47.8 light-years (14.6 pc) from our Solar System. It has a mass of 2.1 Jupiters, takes 111.7 days to complete one orbit around its star, and is 0.36 AU away from it. The apparent magnitude of HIP 79431 is 11.3, with an absolute magnitude of 10.5. It has an orbital period of about 111.7 days and an eccentricity of 0.29. The planet is the sixth giant planet discovered in M dwarf Doppler surveys and is thought to be one of the most massive planets discovered around M dwarf stars. It was discovered in 2009, and its discovery was announced.
Barajeel is the name of the planet HIP 79431 b. During the IAU’s 100th anniversary, the United Arab Emirates chose the name as part of the NameExoWorlds campaign. A barajeel is a wind tower that directs wind flow so that air can be recirculated as a form of air conditioning. The extrasolar planet HIP 79431 b orbits the star HIP 79431 every 111.7 days at an orbital distance of 0.36 AU in this planetary system.
Observations
HIP 79431 b is an extrasolar planet (exoplanet) that orbits the star Sharjah in the Scorpius constellation. Exoplanets are planets that orbit stars other than the Sun. According to the most recent parallax records, the star is 46.96 light years or 14.40 parsecs from Earth. The planet’s orbital period, or year, is 111.7 days or 0.31 Earth years. By the end of a full year, the Earth will have completed 3.27 orbits around its star.
HIP 79431 b is in orbit around a star whose metallicity has been difficult to assess due to uncertainties in the molecular data line, but it is unusual for M Dwarfs to have strong emissions from the core data lines. As a result, the HIP 79431 star was added to the KECK program in April 2009 as part of the exoplanet studies for low mass stars. Using the High Resolution Echelle Spectrometer, 13 Doppler measurements of the star were taken over a 6-month period during this study (HIRES).
The exposure times used in the observation were 600 seconds, resulting in a signal-to-noise ratio of just under 100. The use of iodine absorption lines was required for each program observation in order to model the wavelength scale as well as the instrumental profile of the telescope and spectrometer optics. The Doppler experiments revealed the presence of the planet HIP 79431 b by derived radial velocities that fit the Keplerian model and orbital parameters that best fit planetary gravitational pull. There is, however, no evidence that any additional planets were discovered.
