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Zeta Puppis is a blue [[supergiant]] star of spectral class O5IAf, making it one of the hottest stars in the [[Milky Way|galaxy]] with a surface temperature of 42,400K (in comparison, the [[Sun]] has a surface temperature of 5,780 K).<ref>Lamers & Cassinelli 1999, accurate to 200 K</ref> The star’s mass is 59 times that of our Sun, and 20 times its diameter.
Zeta Puppis is a blue [[supergiant]] star of spectral class O5IAf, making it one of the hottest stars in the [[Milky Way|galaxy]] with a surface temperature of 42,400K (in comparison, the [[Sun]] has a surface temperature of 5,780 K).<ref>Lamers & Cassinelli 1999, accurate to 200 K</ref> The star’s mass is 59 times that of our Sun, and 20 times its diameter.
Because Zeta Puppis is an exceptionally large class O [[supergiant]], it is one of the brightest stars in the [[Milky Way|galaxy]] in terms of absolute magnitude, at -5.96. The star is 21,000 times as luminous as our Sun visually. However because it is a class O blue star, most of the radiation from the star is in the [[ultraviolet]]. When this is considered, the star is 790,000 times more luminous then the [[Sun]] overall.
Because Zeta Puppis is an exceptionally large class O [[supergiant]], it is one of the brightest stars in the [[Milky Way|galaxy]] in terms of absolute magnitude, at -5.96. The star is 21,000 times as luminous as our Sun visually. However, because it is a class O blue star, most of the radiation from the star is in the [[ultraviolet]]. When this is considered, the star is 790,000 times more luminous then the [[Sun]] overall.
Because of its temperature and luminosity, if Zeta Puppis was at the same distance as [[Sirius]] from our [[Solar System]], it would appear as bright as a quarter-moon. If Zeta Puppis was our Sun, the [[Earth]] would have to be 450 AU away in order to maintain the same temperature and climate, or about 11 times the mean distance of [[Pluto]] from our Sun.
Because of its temperature and luminosity, if Zeta Puppis was at the same distance as [[Sirius]] from our [[Solar System]], it would appear as bright as a quarter-moon. If Zeta Puppis was our Sun, the [[Earth]] would have to be 450 AU away in order to maintain the same temperature and climate, or about 11 times the mean distance of [[Pluto]] from our Sun.