HD 93129A

Starbox begin
name=HD 93129A Starbox observe
epoch=J2000
constell=Carina
ra=10h 43m 57.5s
dec=−59° 32' 51.3"
appmag_v=6.97 Starbox character
class=O3Iab
b-v=0.16
u-b=−0.78
variable= Starbox detail
age= 900,000
metal=
mass= >120
radius=
rotation=
luminosity=5,500,000(bolometric)
temperature=51,000 Starbox reference
Simbad=HD+93129A

HD 93129A is one of the most luminous stars in the Milky Way. It is an O-type supergiant located about 10,000 light-years from Earth in the bright nebula NGC 3372, the same nebula that harbors other super luminous stars, like Eta Carinae.

HD 93129A is actually the brighter member of a binary system that, with its dimmer companion - also an O3 Ia supergiant (HD 93129B) - has an overall mass of 200 solar masses.

References

* http://jumk.de/astronomie/big-stars/hd-93129a.shtml