UY Scuti

 UY Scuti (BD-12°5055) is a red supergiant star in the constellation Scutum. It is possibly considered one of the largest known stars by radius and is also a pulsating variable star, with a maximum brightness of magnitude 8.29 and a minimum of magnitude 10.56. Its radius has been given various estimates with high uncertainty, including 1,708 ± 192 solar radii (1.188×10⁹ ± 134,000,000 kilometres; 7.94 ± 0.89 astronomical units), thus a volume nearly 5 billion times that of the Sun, as based on the modelling spectrum by the Very Large Telescope (VLT), and 755 solar radii (525,000,000 kilometres; 3.51 astronomical units), thus a volume over 2 billion times that of the Sun, as based on parallax measurements by the GAIA DR2 database. It is approximately 1.8 kiloparsecs (5,900 light-years) from Earth as measured by the GAIA EDR3 database. Nonetheless, based on these estimates, if placed at the center of the Solar System, its photosphere in general would possibly approach the orbit of Jupiter.