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The orbit of HD 188753 BC around A. The primary star, HD 188753 A, is similar to the Sun [9] with a mass only 6% larger and a stellar classification of G8V. [3] Orbiting this primary at a distance of 12.3 AU [10] is a pair of smaller stars that orbit each other with a period of 156.0 ± 0.1 days, a semi-major axis of 0.67 AU, and eccentricity of 0.1 ± 0.03.
HD 140283 (also known as the Methuselah star) is a metal-poor subgiant star about 200 light years away from the Earth in the constellation Libra, near the boundary with Ophiuchus in the Milky Way Galaxy.
HD 10180, also designated 2MASS J01375356-6030414, is a Sun-like star in the southern constellation Hydrus that is notable for its large planetary system.Since its discovery, at least six exoplanets have been observed orbiting it, and some studies have proposed up to nine potential planets, which would make it potentially the largest of all known planetary systems, including the Solar System.
Botanical illustration of a pōhutukawa sprig by Ellen Cheeseman. Pōhutukawa (Metrosideros excelsa), [2] also known as the New Zealand Christmas tree, [3] [4] or iron tree, [5] is a coastal evergreen tree in the myrtle family, Myrtaceae, that produces a brilliant display of red (or occasionally orange, yellow [6] or white [7]) flowers, each consisting of a mass of stamens.
HD 222582 is a multiple star system in the equatorial constellation of Aquarius.It is invisible to the naked eye with an apparent visual magnitude of 7.7, [2] but can be viewed with binoculars or a small telescope. [12]
NGC 246's central star is the 12th magnitude [7] white dwarf HIP 3678 A. [8] NGC 246 is not to be confused with the Rosette Nebula (NGC 2337), which is also referred to as the "Skull." [ 9 ] Among some amateur astronomers, NGC 246 is known as the "Pac-Man Nebula" because of the arrangement of its central stars and the surrounding star field.
Nu Draconis (also known as 𝜈 Dra, 𝜈 Draconis, where 𝜈 is the Greek letter nu, or traditionally as Kuma / ˈ k juː m ə /) is a double star in the constellation Draco. The respective components are designated 𝜈 1 Draconis and 𝜈 2 Draconis. The second component is a spectroscopic binary star system. [14]
This video sequence is based on an artist's impression of exocomets orbiting the star Beta Pictoris. Beta Pictoris (abbreviated β Pictoris or β Pic) is the second brightest star in the constellation Pictor. It is located 63.4 light-years (19.4 pc) from the Solar System, and is 1.75 times as massive and 8.7 times as luminous as the Sun.