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Pleione |
 | | From its distance of 385 light years, Pleione shines with a luminosity 190 times that of the Sun, its radius 3.2 solar, its mass (from the luminosity and temperature) 3.4 solar. |
 | | Pleione's glory lies in its spectrum, its array of colors. |
 | | The difference in Be star styles was once thought to be a matter of orientation, but Pleione puts the lie to the theory by switching among all three phases, normal B star, Be star, Be shell star, the changes taking place at intervals of 17 and 34 years. |
| www.astro.uiuc.edu /~kaler/sow/pleione.html (361 words) |
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