Pi5 Orionis
Star
Pi⁵ Orionis is a binary star system in the constellation Orion. It has an apparent visual magnitude of 3.69, which is bright enough to be visible to the naked eye on a clear night. Based upon an annual parallax shift of 2.43 mas, it is around... Wikipedia
Magnitude: 3.69
Constellation: Orion
Absolute magnitude (MV): −4.3
B−V color index: −0.18
Semi-amplitude (K1) (primary): 60.41±1.99 km/s
U−B color index: −0.81