Gamma Sextantis

Gamma Sextantis, Latinized as γ Sextantis, is a binary star system in the equatorial constellation of Sextans. The combined apparent [visual magnitude] of the system is 5.05, which means it is faintly visible to the naked eye. The annual parallax shift is 11.75 mas, indicating a distance of around 280 light years.
The two components orbit each other with a period of 77.55 years and a high eccentricity of 0.691. The orbital plane is inclined by 145.1° to the line of sight from the Earth. With a visual magnitude of 5.6, the brighter component Gamma Sextantis 'A is an A-type main sequence star with a stellar classification of A1 V. The fainter companion Gamma Sextantis B' has a classification of A4 V with a magnitude of 6.0. Their combined spectrum matches a classification of A0/1 V. Their angular separation 0.4 arcseconds, so observation with a telescope requires a diameter of at least 30 centimeters.
There is a magnitude 12.28 companion star Gamma Sextantis 'C' at an angular separation of 36.9 arc seconds along a position angle of 333°, as of 2000. This separation has increased from 30.0 arc seconds in 1834. The proper motion of this star differs from the Gamma Sextantis AB system, having components μ_α = −29 mas/yr and μ_δ = +5 mas/yr.