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USPS Star Calendar for 17-23 February 10 February 2013

Posted by amedalen in February 2013.
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17 Feb    The Pleiades Cluster is 3 finger-widths to the right or upper right of the first-quarter moon high in the southwest early tonight. Jupiter is 2 finger-widths to the upper left.

18 Feb    The waxing gibbous moon has moved to Jupiter’s left tonight, and Aldebaran is 2 finger-widths to the moon’s lower right.

19 Feb    Orion is below the moon this evening. The second brightest star, magnitude 0.6 Betelgeuse, is 1 fist-width below or to the lower left of the moon. Two-and-a-half fist-widths beyond Betelgeuse lies magnitude -1.59 Sirius, the Dog Star, in the constellation Canis Major, the Great Dog. In myth, Canis Major is one of Orion’s hunting dogs. The moon is at apogee, 63.42 earth-radii or 404,000 kilometers away.

20 Feb    The bright star 1 finger-width to the moon’s lower left tonight is magnitude 1.9 Alhena in the constellation Gemini, the Twins.  Pollux and Castor, the Twins, are nearly 2 fist-widths to the moon’s upper left. Nearly 75 percent of the moon’s surface is illuminated.

21 Feb    The moon lies midway between the Gemini Twins, to the upper left, and magnitude 0.5 Procyon, below.

22 Feb    Rising 3 hours before sunset, the moon, nearly 90 percent illuminated, is visible before sunset. As daylight fades, watch as stars appear near the moon. The first to emerge should be the brightest, magnitude -1.59 Sirius, which is 3½ fist-widths to the moon’s lower right. The next should be magnitude 0.5 Procyon, 1 fist-width to the moon’s right.

23 Feb    Tonight, the moon is between Regulus, 1½ fist-widths to the lower left, and Procyon, 2 fist-widths to the upper right. The Big Dipper stands on its handle, far to the left.

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