Friday, September 16, 2011

What are the MAJOR stars in the constellation Andromeda?

*if you know a a good site where i can get the major stars of andromeda (constellation, not the galaxy) ...their distance from earth, type of star, apparent mag, absolute mag, declination, or right ascension i would GREATLY appriciate that as well!* THANKS|||Almach, Mirach, and Alpheratz





Almach is a gorgeous double star. The brighter gold star is spectral type K2lll and magnitude 2.2. Its blue white companion is spectral type A0 and magnitude 5.0. The blue white star is itself a binary with the system at about 355 light years distant.





Mirach is spectral type M0lll, magnitude 2.1, distance about 199 light years.





Alpheratz is spectral type A0 V, magnitude 2.1, distance 97 light years.





ADDED: I have updated the distances since I have found two references that agree with the larger figures. You can get RA and Dec numbers from the freeware download called Stellarium. Once the program is running, left click on each of the 3 stars in the lower line of Andromeda and you will get a listing on each one. Good Luck.|||thanks!!

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|||It is always good to begin with wikipedia (at least, in astronomy, the pages are OK most of the time).





http://en.wikipedia.org/wiki/Andromeda_%鈥?/a>





There, you will find the names of the principal stars and more info.





More importantly, you will find links to other pages in wiki;


for example, pages to the stars themselves, such as


http://en.wikipedia.org/wiki/Alpha_Andro鈥?/a>





This star (strangely enough) has two names because it actually belongs to two constellations -- as part of Andromeda, it is called Alpheratz and as part of Pegasus, it is called Sirrah.





There are also Mirach, Almaak and Adhil.





I did not find many other 'beginner's' pages outside wiki.





You could try


http://www.astro.wisc.edu/~dolan/constel鈥?/a>


but it is quite technical.

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