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Xi-2
Hot blue starIts story
Xi-2 Centauri is a blue triple system 467 light-years away, with an inner pair orbiting in just seven and a half days and a third, cooler companion sitting twenty-five arcseconds away. The primary is a B1.5 star carrying eight solar masses and shining with 1,700 times the Sun's luminosity at nearly 21,000 kelvin. The inner binary was discovered in 1910 by American astronomer Joseph Haines Moore.
- Constellation
- Centaurus
- Apparent magnitude
- 4.27
- Distance
- 467.3 light years
- Coordinates (J2000)
- RA 196.728° · Dec -49.906°
- Catalogue
- HIP 64004 · HD 113791
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