Gliese 180

Common card · No. 415321

Gliese 180 (often shortened to GJ 180), is a small red dwarf star in the equatorial constellation of Eridanus. It is invisible to the naked eye with an apparent visual magnitude of 10.9. The star is located at a distance of 39 light years from the Sun based on parallax, and is drifting closer with a radial velocity of −14.6 km/s. It has a high proper motion, traversing the sky at the rate of 0.765 arcseconds per year. The stellar classification of GJ 180 is catalogued as M2V or M3V, depending on the study, which indicates this is a dim red dwarf – an M-type main-sequence star that is generating energy by core hydrogen fusion. Reiners and associates (2012) do not consider it to be an active star. It is about five billion years old and is spinning with a projected rotational velocity of ~3 km/s, giving it a rotation period of about 65 days. The star has 43% of the Sun's mass and 42% of the radius of the Sun. It is radiating just 2.4% of the luminosity of the Sun from its photosphere at an...

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