Gliese 687
Gliese 687, or GJ 687 is a red dwarf in the constellation Draco. This is one of the closest stars to the Sun and lies at a distance of. Even though it is close by, it has an apparent magnitude of about 9, so it can only be seen through a moderately sized telescope. Gliese 687 has a high proper motion, advancing 1.304 arcseconds per year across the sky. It has a net relative velocity of about 39 km/s. It is known to have a Neptune-mass planet. Old books and articles refer to it as Argelander Oeltzen 17415.
Properties
Gliese 687 has about 40% of the Sun's mass and nearly 50% of the Sun's radius. Compared to the Sun, it has a slightly higher proportion of elements with higher atomic numbers than helium. It seems to rotate every 60 days and exhibit some chromospheric activity.It displays no excess of infrared radiation that would indicate orbiting dust.
Gliese 687 is a solitary red dwarf that emits X-rays.