Gliese 65

The star system was discovered in 1948 by Willem Jacob Luyten in the course of compiling a catalog of stars of high proper motion; he noted its exceptionally high proper motion of 3.37 arc seconds annually and cataloged it as Luyten 726-8.

km/s then approximately 28,700 years ago Gliese 65 was at its minimal distance of 2.21 pc (7.2 ly) from the Sun.

[4] In approximately 31,500 years, Gliese 65 will have a close encounter with Epsilon Eridani at the minimal distance of about 0.93 ly.

Gliese 65 can penetrate a conjectured Oort cloud about Epsilon Eridani, which may gravitationally perturb some long-period comets.

[15] In 2024, a candidate super-Neptune-mass planet was detected in the Gliese 65 system via astrometry with Very Large Telescope's GRAVITY instrument.

[7] The planet's properties change slightly depending on which star it orbits, but in general its mass is estimated to be about 40 ME and the semi-major axis is about 30% of an astronomical unit.

UV Ceti by Andrew Posa (1982)
An ultraviolet light curve for UV Ceti, adapted from Beskin et al. (2017). [ 13 ] The main plot shows the full flare event and the inset plot shows the time around peak brightness with an expanded time scale.