HD 28254 b [SEP] constellation
HD 28254 b
HD 28254 b (also known as HIP 20606 b) is an extrasolar planet which orbits the G-type main sequence star HD 28254, located approximately 178 light years away in the constellation Dorado. This planet has at least seven-sixths the mass of Jupiter and takes over three years to orbit the star at a semimajor axis of 2.01 AU. However unlike most other known exoplanets, its eccentricity is not known, but it is typical that its inclination is not known. This planet was detected by
sequence. It is estimated to have a mass 11% larger than the Sun's, a radius 57% larger, and an age around 7.8 billion years. It has a luminosity of 1.57 times the solar luminosity and an effective temperature of about 5,600 K. HD 28254 has a low activity level and a larger metallicity than the Sun, with 2.3 times the solar iron abundance.
HD 28254 is the brighter component of a visual binary. Its companion, HD 28254 B, has a visual apparent magnitude of 13.8 and