HD 17943

HD 17943 is a G5V-type star located approximately 88 light-years away in the constellation Andromeda. It is a main-sequence star, meaning it is fusing hydrogen into helium in its core, like our Sun. HD 17943 is similar in size and temperature to the Sun, but slightly less massive and slightly less luminous.

The star is known to host a single exoplanet, designated HD 17943 b. This planet was discovered in 2009 using the radial velocity method, which detects the wobble of a star caused by the gravitational pull of an orbiting planet. HD 17943 b is classified as a hot Neptune, meaning it is a gas giant planet similar in size to Neptune but orbiting very close to its host star. Its orbital period is approximately 3.3 days, and it has a minimum mass of about 0.067 times the mass of Jupiter.

The proximity of HD 17943 b to its star makes it a hot planet with a high equilibrium temperature. Studying HD 17943 b provides valuable insights into the formation and evolution of hot Neptunes and planetary systems in general. Further research may focus on characterizing the planet's atmosphere and searching for other potential planets in the system.