RX Telescopii
RX Telescopii is an irregular variable star in the constellation Telescopium. It has a maximum magnitude of 6.45 and a minimum magnitude 7.47. It is a red supergiant with a spectral type of M3Iab. If placed in our solar system, it's photosphere would engulf the orbit of Jupiter, nearing that of Saturn. It is currently one of the largest stars discovered.
The distance to RX Telescopii is uncertain. It has a Gaia Data Release 2 parallax of, suggesting a distance around. A more rigorous statistical calculation gives a distance of. However the Gaia database has an astrometric noise value larger than the parallax itself and about ten times larger than the typical maximum for a reliable parallax.
