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| | Bayer-Flamsteed Designations |
 | | The first number, if present, is the Flamsteed designation for a given star, which numbers the brighter, visible stars in a constellation in a sequence from west to east by right ascension. |
 | | The three-letter code, which, if given, preceeds the code for a star's constellation, is an abbreviation of the name of a Greek letter -- the Bayer designation for a star. |
 | | Bayer ranked the stars (not always precisely) by brightness, with the alpha star typically being the brightest in a given constellation, beta the second brightest, and so on, down through the Greek alphabet. |
| www.skyviewcafe.com /bayer_flamsteed.html (235 words) |
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