Baton Rouge Astronomical Society Forum

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 Post subject: The Winter Triangle
PostPosted: January 27th, 2015, 1:57 am 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3693
Location: Baton Rouge, LA
The Winter Triangle is one of the most useful asterisms in the Northern Hemisphere sky. It is formed by three stars, each famous on its own merits...
*Sirius, A-class, magnitude -1.5, distance 8.6 light-years
*Procyon, F-class, magnitude 0.3, distance 11.5 light-years
*Betelgeuse, M-class, magnitude 0.7, distance 570 light-years

I went outside to see it tonight, ~10:30pm. Procyon probably gets the least attention of the three, though it could be argued it has just as many interesting qualities as the other two.


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 Post subject: Re: The Winter Triangle
PostPosted: February 1st, 2017, 8:15 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3693
Location: Baton Rouge, LA
The Winter Triangle can be seen right now, tonight. At 7:30pm CST Sirius will have just made the thirty-degree altitude mark, Procyon will be a thirty-six degrees and Betelgeuse at fifty-seven degrees.


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 Post subject: Re: The Winter Triangle
PostPosted: April 3rd, 2017, 6:21 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 3693
Location: Baton Rouge, LA
Jump outside tomorrow night at 9pm CDT to see the waxing gibbous Moon forming a very long line with Sirius and Procyon. The surprisingly straight line will extend to about forty degrees!


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