Also known asMu Cephei (μ Cep, μ Cephei), a red supergiant in the constellation Cepheus, named after German-born British astronomer William Herschel, who was the first to note its deep red color. The star is visually nearly 100,000 times brighter than the Sun, with an absolute visual magnitude of −7.6. It's one of the largest known stars, measuring an estimated 1,000 times the radius of the sun.
A yellow-colored class G8 subdwarf in the constellation Ursa Major, also known as Groombridge 1830 after British astronomer Stephen Groombridge, who first catalogued it. Its high proper motion was noted by German astronomer Friedrich Wilhelm Argelander in 1842. The star is 29.9 light-years (9.2 parsecs) from the Sun.
It was once thought to be a binary star with a period of 175 days, but previous suspected observations of that kind were probably superflares. Current consensus is that it is... Read more...
A very-low-mass red dwarf about 6 light-years from Earth in the constellation Ophiuchus. It is the fourth-nearest known individual star to the Sun... Read more...
The star 55 Cancri A, named in honor of astronomer Nicolaus Copernicus, is a binary star approximately 41 light-years from the Sun in the... Read more...
The star Mu Arae (μ Arae, abbreviated Mu Ara, μ Ara), designated HD 160691, is a main sequence G-type star approximately 50 light-years from the... Read more...