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20 Leonis Minoris
is a binary star
A binary star is a star system consisting of two stars orbiting around their common center of mass. The brighter star is called the primary and the other is its companion star, comes, or secondary...
system in the constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Leo Minor is a small and faint constellation. Its name means "the smaller lion", in contrast to Leo, the larger lion. Its brightest stars form a rough triangle, and it lies between the larger and more recognizable Ursa Major and Leo...
. It has a relatively high proper motion
The proper motion of a star is its angular change in position over time as seen from the center of mass of the solar system. It is measured in seconds of arc per year, arcsec/yr, where 3600 arcseconds equal one degree. This contrasts with radial velocity, which is the time rate of change in...
. The companion is an old, active red dwarf
According to the Hertzsprung-Russell diagram, a red dwarf star is a small and relatively cool star, of the main sequence, either late K or M spectral type....
star that has a relatively high metallicity. The two stars are currently separated by 14.5 arc seconds.