Gliese 784

Gliese 784 is a single red dwarf star located in the southern constellation of Telescopium that may host an exoplanetary companion. The star was catalogued in 1900, when it was included in the Cordoba Durchmusterung (CD) by John M. Thome with the designation CD−45 13677. It is too faint to be viewed with the naked eye, having an apparent visual magnitude of 7.96. Gliese 784 is located at a distance of 20.1 light-years from the Sun as determined from parallax measurements, and is drifting closer with a radial velocity of −33.5 km/s. The system is predicted to come as close as 11.4 light-years in ~121,700 years time.

This is a small M-type main-sequence star with a stellar classification of M0V. It is much younger than Sun at 0.85±0.4 billion years. Despite this, it appears to be rotating slowly with a period of roughly 48 days. The star has 58% of the mass and 58% of the radius of the Sun. It is radiating just 6% of the luminosity of the Sun from its photosphere at an effective temperature of 3,754 K.

In June 2019 one planet candidate was reported in orbit around Gliese 784. An infrared excess was detected in 2020 that could suggest the presence of a circumstellar disk, but this is likely due to a background galaxy.