Tags: Star.
TVLM513-46546 is an ultracool red dwarf in the constellation Boötes exhibiting a flare star activity and all the same varying semi-regularly due to dissimilarly bright hemispheres and a rotation period of about two days. The star has a mass as low as 90 times the mass of Jupiter (or 9 percent of Sun’s mass) and an estimated radius of 11 percent that of Sun (nearly a Jupiter-sized star). The star also shows hints of an unseen companion with undetermined mass.