Gliese 42 is a star in the southern constellation of Sculptor. It is too faint to be seen with the naked eye, having an apparent visual magnitude of +7.3. The annual parallax shift of 70.56 mas provides a distance estimate of 46 light years. It has a relatively high proper motion, advancing 0.62 arcseconds across the sky per annum, and is moving closer to the Sun with a radial velocity of −13 km/s.
The spectrum of the star matches a stellar classification of , indicating it is an ordinary K-type main-sequence star that is generating energy through hydrogen fusion at its core. It is radiating 29% of the Sun's luminosity from its photosphere at an effective temperature of 4,822 K. The star has 66% of the Sun's radius.
Debris disk
An infrared excess has been detected around this star, most likely indicating the presence of a circumstellar disk at a radius of . The temperature of this dust was initially estimated as according to measurement by Herschel Space Observatory. Later that measurement was deemed questionable, and fixed temperature of was obtained in 2020.
References
External links
K-type main-sequence stars
Gliese, 0042
0042
005133
004148
Durchmusterung objects
J00530108-3021249
Sculptor (constellation)