1. When three or more stars huddle together, it's called a multiple star system.

2. Acrux, Alpha Crucis (α Cru), is a multiple star system located in the constellation Crux

3. In multiple-star systems of a sufficiently large number of stars, absorbing a small but significant fraction of the output of each individual star.

4. However, Acrux is actually a multiple star system that can be split relatively easily, although the primary component, designated Alpha-1 Crucis, is itself a close

5. Fixed star Acrux, Alpha Crucis, is a 0.8 magnitude multiple star system in the Southern Cross, Crux Constellation.The name Acrux is an “Americanism” for the full Bayer designation Alpha Crucis.Acrux is represented in the flags of Australia, New Zealand, Samoa, and Papua New Guinea as one of five stars which comprise the Southern Cross.