HD 40873

HD 40873 is a G-type main-sequence star located approximately 144 light-years away in the constellation Pictor. It is similar in size and temperature to the Sun, though slightly older.

HD 40873 is notable for hosting a confirmed extrasolar planet, designated HD 40873 b. This planet is a hot Jupiter, meaning it is a gas giant with a mass similar to Jupiter that orbits very close to its host star. Its orbital period is relatively short, completing a full revolution around HD 40873 in approximately 1.3 days. This close proximity results in extremely high temperatures on the planet.

The star's designation, "HD 40873," comes from the Henry Draper Catalogue, a comprehensive astronomical catalog published in the early 20th century that lists the positions and spectral types of over 225,000 stars.

Ongoing research focuses on further characterizing both the star and its planet to gain a better understanding of planetary formation and evolution, especially the phenomenon of hot Jupiters and their migration towards their host stars.