Theta1 Crucis
Star
Theta¹ Crucis is a spectroscopic binary star system in the southern constellation of Crux. It is visible to the naked eye with an apparent visual magnitude of 4.30ᵐ. The distance to this star, as determined using parallax measurements, is around... Wikipedia
Absolute magnitude (MV): +1.29
Apparent magnitude (V): 4.30
B−V color index: +0.28
Distance: 235 ± 3 ly; (72.0 ± 0.8 pc)
Semi-amplitude (K1) (primary): 46.1 km/s
U−B color index: +0.03