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Mirfak - MSN Encarta |
 | | Mirfak is a very bright star with an intrinsic luminosity, or total light output, that rates an absolute magnitude of -5.1 (bright stars have low or even negative magnitude values). |
 | | Mirfak’s surface temperature is 6200° C (11,000°F), which is about 10 percent greater than the surface temperature of the sun and gives the star a yellow-white color. |
 | | From its composition, temperature, and size, astronomers classify Mirfak as a supergiant star—an older star that has used up the hydrogen fuel in its core and is now burning hydrogen in its outer shell and helium in its core. |
| encarta.msn.com /encyclopedia_761587748/Mirfak.html (481 words) |
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