HR 3831
# HR 3831

HR 3831, also known as HD 83368, is a binary star system in the southern constellation of Vela at a distance of 233 light years. This object is barely visible to the naked eye as a dim, blue star with an apparent visual magnitude of 6.232. It is approaching the Earth with a heliocentric radial velocity of 4.0±0.3 km/s.

The star system is a visual binary with a 3.29″ projected separation, identified as such in 2002. The larger star, HD 83368A, is a pulsating variable of a rapidly oscillating Ap type. It has a single yet strongly distorted dipole pulsation mode with a frequency of 1427 µHz. The primary star is chemically peculiar, exhibiting spots of enhanced concentrations of lithium, europium and oxygen.

