Map of the Universe
Acrux
Star · Septuple star system in the constellation Crux
About Acrux
Acrux is about 321.97 light-years from the Sun, so the light we see from it left about 321.97 years ago.
At apparent magnitude 0.77 it can be seen with the naked eye from a dark site.
It gives out 4.18e+03 times as much light as the Sun.
The map lists it as a star and shows it among the stars around the Sun, drawn on the plane of the Milky Way.
Key numbers
| Distance | 321.97 light-years (98.72 pc) |
|---|---|
| Spectral type | B0.5IV |
| Apparent magnitude | 0.77 |
| Absolute magnitude | -4.20 |
| Luminosity | 4.18e+03 × the Sun |
| Constellation | Cru |
Where it is
Its place in the universe, from the inside out: Solar neighbourhood › Local Bubble › Orion–Cygnus Arm (Local Arm) › Milky Way › Local Group › Virgo Supercluster › Laniakea Supercluster › Observable universe.
Zoom out to see it in context: 1,000 light-years, a view about 2,400 light-years across.
From Wikipedia
Acrux is a multiple star system and the brightest star in the southern constellation of Crux. It has the Bayer designation α Crucis, which is Latinised to Alpha Crucis and abbreviated Alpha Cru or α Cru. With a combined visual magnitude of +0.76, it is the 13th-brightest star in the night sky.
Excerpt from the Wikipedia article Acrux, licensed CC BY-SA 4.0.