HD 210277
HD 210277 is a 7th magnitude star in the constellation of Aquarius. It is a yellow dwarf star with a mass around 9% larger than that of our Sun. Since its distance is about 70 light years, it is not visible to the unaided eye. With binoculars it is easily visible.
The star has an extrasolar planet that has a minimum mass greater than Jupiters orbiting it in 442 days. Claims were made in 1999 that a dust disk around the star HD 210277, similar to that produced by the Kuiper Belt had been imaged, lying between 30 and 62 AU from the star. However, observations with the Spitzer Space Telescope failed to detect any infrared excess at 70 micrometres or at 24 micrometres wavelengths.Planetary system
The only known planet was discovered using 34 radial velocity measurements taken from 1996 to 1998 at W. M. Keck Observatory.
