LHS 2065 is a red dwarf star, one of the smallest stars ever found with around 8.2% the mass of the Sun and a diameter only 10% greater than Jupiter. It is one of the few ultracool dwarfs known to have flare activity, emitting one flare every 33 hours, and is also an active X-ray emitter.

Parallax measurements by the Gaia spacecraft give a distance of 8.66 parsecs (28.2 ly) to LHS 2065. This star was first recorded by the Luyten Half-Second catalogue, a catalogue of stars with proper motions exceeding 0.5". The star's main identifier is named after this catalogue. It is located in the Hydra constellation.

This star has a spectral type of M9V, indicating a very cool star at the end of the main sequence. It is among the nearest ultracool dwarfs to Earth. LHS 2065 has an effective temperature of around 2,317 K, 2.5 times less than the Sun. The lack of lithium in the star's atmosphere indicate that it must be over 500 million years old.