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USPS Star Calendar for 13-19 July 6 July 2014

Posted by amedalen in July 2014.
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13 Jul    You’ll need binoculars to watch as Mars passes to Spica’s left. The moon is at perigee, 56.17 Earth-radii (358,000 kilometers) away. Perigee occurs 21 hours after the full moon, so we can expect tidal extremes.

15 Jul    High in the south before dawn, the bright star 2½ fist-widths to the moon’s lower left is magnitude 1.3 Fomalhaut.

16 Jul    The moon rises late tonight, making for dark skies and good stargazing. Soon after sunset look high in the northwest for the Big Dipper with its handle pointing up. As evening passes, it rotates counterclockwise and is just above the northern horizon before dawn.

17 Jul    Look to the Big Dipper’s right tonight and follow the two pointer stars at the end of the dipper 3 fist-widths to the lower right to Polaris, the North Star. Some mistakenly believe Polaris is the brightest star, but at magnitude 2.1, it’s only second magnitude. The brightest star is magnitude –1.59 Sirius, the Dog Star, which is only above the horizon during the day right now.

18 Jul    An hour before dawn, look for several second-magnitude stars within 2 and 2½ fist-widths of the moon: magnitude 2.1 Alpheratz above the moon, magnitude 2.2 Deneb Kaitos to the lower right, magnitude 2.0 Mira slightly closer and to the lower left, and magnitude 2.2 Hamal to the left.


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