Gliese 146

Gliese 146 is a star with an orbiting exoplanet in the constellation Horologium. Gliese 146 is also catalogued as HD 22496, HIP 16711, SAO-216392, and LHS 1563. With an apparent visual magnitude of 8.64, it is too faint to be visible to the naked eye. Gliese 146 is located at a distance of 44.4 light years based on parallax measurements, and is drifting further away with a heliocentric radial velocity of +21 km/s.

This is an ordinary K-type main-sequence star with a stellar classification of K6.5V. It has 68% of the mass of the Sun and 67% of the Sun's girth. Gliese 146 is radiating 12% of the luminosity of the Sun from its photosphere at an effective temperature of 4,385 K. Classified as a suspected variable star, Gliese 146 was found to be a flare star, with average flare frequency 0.23 flares per day.

Its velocity relative to the Sun is 38.1 km/second, and its galactic orbit ranges between 20,800 and 25,400 light years from the center of the Galaxy, placing it within a thin disk. It belongs to the Hyades supercluster of stars, and is one of 155 K-type stars within 50 light years.

Planetary system
It is one of 500 stars selected in 2009 for the SCUBA-2 All Sky Survey for stars with debris disks. The debris disk was not detected by any survey as in 2015 though.

In 2021, a Sub-Neptune planet HD 22496b was discovered utilizing a Doppler spectroscopy method. It is orbiting very close to the host star at a separation of 0.0510 AU and an orbital period of five days. The planet is not known to be transiting. As the inclination of the orbital plane is unknown, only a rough lower bound on the mass of this planet can be established: it has at least ~5.6 times the mass of the Earth.