24 Boötis [SEP] constellation
24 Boötis
24 Boötis or g Boötis is a single, yellow-hued star in the constellation Boötes. It is faintly visible to the naked eye with an apparent visual magnitude of +5.59. Based upon an annual parallax shift of 10.00 mas, it is located around 326 light years from the Sun. The star is moving closer to the Sun with a radial velocity of −8 km/s. It is a thick disk star with a high galactic space velocity and an orbital eccentricity of that carries it as
HR 8799 d
HR 8799 d is an extrasolar planet located approximately 129 light-years away in the constellation of Pegasus, orbiting the 6th magnitude Lambda Boötis star HR 8799. It has a mass between 5 and 10 Jupiter masses and a radius from 20 to 30% larger than Jupiter's. The planet orbits at 24 AU from HR 8799 with an eccentricity greater than 0.04 and a period of 100 years. Upon initial discovery, it was the innermost known planet in the HR 8799 system, but e, discovered later