Qatar-8

400Weir: Created a planetary article.

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<ref name =Ga1a/>|parallax=3.528|p_error=0.0321|prop_mo_ra=|prop_mo_dec=|absmag_v=4.45|parallax_footnote=<ref name =Ga1a/>|pm_footnote=<ref name =Ga1a/>}}
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'''Qatar-8''' is a faint [[solar analog]] located in the norther circumpolar constellation [[Ursa Major]]. With an apparent magnitude of 11.71, it's impossible to detect with the naked eye, but can be located with a powerful telescope. Qatar-8 is currently 924 light years away from the [[Solar System]], but is drifting further away, with a radial velocity of 5.06 km/s.

== Properties ==
Qatar-8 is a relatively old star, with an age of 8.3 billon years. At this rate, it's on the final stages of the main sequence. It has a similar effective temperature to the [[Sun]] at 5,738 K. Despite that, it has a greater luminosity than the Sun, with 69% more solar luminosities than the latter. Qatar-8 has a radius 31.5% greater than our Sun, and has a similar metallicity to the Sun despite it's age.

== Planetary System ==
In 2019, the [[Qatar Exoplanet Survey]] (QES) discovered planets around [[Qatar-9]], itself, and [[Qatar-10]]. However, Qatar-8b is a puffy [[Hot Saturn]] unlike the other planets discovered.




Since Qatar-8b is a puffy planet, it only has 37.1% the mass of [[Jupiter]]. Due to that, it puffs up to a radius that is 28.5% larger than the latter's. It also has an effective temperature of 1457 K. Qatar-8 is 10 times closer to it's star than [[Mercury (planet)|Mercury]] is to the Sun, which corresponds to a typical 4 day orbit.
<ref name =pr1me/>|mean_radius=<ref name =pr1me/>|semimajor=0.0474 AU|period=3.714 days|density=0.216 g cm−3<ref name =pr1me/>|semi-amplitude=47.7 ± 8.0 ms -1|orbit_ref=<ref name =pr1me/>|p_orbit_ref=<ref name =pr1me/>|image=[[File:Qatar-8b.png|frameless|An artist's impression of Qatar-8b, a puffy Saturn-like planet.]]|caption=An artist's impression of Qatar-8b}}

== References ==
<references />
2019

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