31 Arietis is a binary star system in the northern constellation of Aries. 31 Arietis is the Flamsteed designation, which is abbreviated 31 Ari. The pair have an apparent visual magnitude of 5.75, which is just bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of , the distance to this system is . It is drifting further away with a line of sight velocity component of +8.4 km/s. The system is located near the ecliptic, so it is subject to occultation by the Moon.
The two members of this system orbit each other with a period of 3.80 years and an eccentricity of 0.017. Both components of the system are F-type main sequence stars with a stellar classification of F7 V. The dynamical mass of the system is . Their estimated age is 2.8 billion years.
References
External links HR 763 CCDM J02366 +1227 Image 31 Arietis