Gliese 328

Gliese 328, also known as BD+02 2098, is a M-type main-sequence star located 66.9 ly away in the constellation Hydra. Its surface temperature is 3989 K. Gliese 328 is depleted in heavy elements compared to the Sun, with a metallicity Fe/H index of −0.13. The age of the star is unknown. Gliese 328 exhibits an activity cycle similar to that of the Sun, with a period around 2000 d.

Multiplicity surveys did not detect any stellar companions as of 2016.

Planetary system
In 2013, one superjovian planet, named Gliese 328 b, was discovered on a wide, eccentric orbit by the radial velocity method. The known planetary orbit is wide enough to not disrupt orbits of other bodies in the habitable zone of the star. In 2023, a second, Neptune-mass planet was discovered orbiting closer to the star.