HD 38858

HD 38858 is a star in the Orion constellation. It is a G-type main-sequence star, located at a distance of about 50 light-years. It has an apparent magnitude of 5.97, so it can be seen by the naked eye only in sufficiently dark skies.
This system was observed for a dust disc or comet belt in 2009 by the Spitzer Space Telescope; a belt was inferred at 102 AU. It has an inclination of 48°.
The star exhibits a magnetic activity cycle remarkably similar to that of the Sun, with a period of 10.8 years.

Planetary system

The exoplanet HD 38858 b was discovered in 2011 in orbit in its host star's habitable zone, a zone in which Earth-like conditions on a planet's surface are possible. The planet is likely a gas giant, a type of planet which astronomers believe is unlikely to support life as it is currently understood. However, the planet could have a rocky natural satellite capable of sustaining an Earth-like environment.
The existence of this planet was disputed since 2015 though, attributing the planetary signal to the frequency-domain alias of the star magnetic activity cycle, although the existence of another planet on the 198-day orbit is suspected.