GJ 2030 is a star in the constellation Eridanus. At an apparent magnitude of +6.206,^[3] it is close to the average threshold for naked eye visibility, and can only be viewed from sufficiently dark skies, far from light pollution.^[8] Parallax measurements by the Gaia spacecraft measured a distance of 121.7 light-years, give or take 0.4 light-years.^[2]

The spectrum of this star matches a spectral class of G5/6V,^[4] with the luminosity class V suggesting it is a main sequence star, but its physical properties suggest it is actually a subgiant.^[2] It has 1.02 times the Sun's mass and 2.43 times the Sun's radius. It radiates 4.06 times the Sun's luminosity from its photosphere at an effective temperature of 5,259 K.^[5] At this temperature, the star shines with a yellowish color typical of G-type stars.^[9]

GJ 2030 is likely a member of the thick disk population,^[10] with a substantially lower metallicity than the Sun.^[5] Its age is estimated at 6.39 billion years, older than the Solar System.^[6]

Planetary system

Two extrasolar planets were discovered around the star in 2022, detected via Doppler spectroscopy (radial velocity method) and astrometry.^[11]

References