Magnitude 4.718 Apparent magnitude (V) 4.718 | ||
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Theta2 Crucis (θ2 Cru / Theta2 Crucis) is a spectroscopic binary star in the constellation Crux. This pair of stars complete an orbit every 3.4280 days and they have a low orbital eccentricity that is close to 0.0. Theta2 Crucis is located at about 750 light-years from the Sun.
The system has a combined mean apparent magnitude of +4.72m. Since a member of the system is a β Cephei-type variable star, the magnitude is not fixed but varies slightly between +4.70m and +4.74m. The period of this variability is 0.0889 days. The system is categorized as is a blue-white B-type main sequence star with a stellar classification of B3 V.
References
Theta2 Crucis Wikipedia(Text) CC BY-SA