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USPS Star Calendar for 19-25 May 12 May 2013

Posted by amedalen in May 2013.
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20 May    Tonight, the moon is high in the south between magnitude 1.3 Regulus, 3½ fist-widths to the upper right, and magnitude 1.2 Spica, less than 2 fist widths to the lower left. The bright “star” 1 fist-width to Spica’s lower left is magnitude 0.3 Saturn. The moon is a little more than two-thirds illuminated.

21 May    Spica is 2 finger-widths to the left or lower left of the moon this evening.

22 May    Saturn is 2 finger-widths to the moon’s upper left tonight. Don’t miss the planetary show these next few evenings. With binoculars and a clear view of the western horizon, look for Venus, Jupiter and Mercury forming a tight group at dusk. The brightest, magnitude -3.9 Venus, becomes visible first. Next comes magnitude -1.9 Jupiter, 3 finger-widths to the upper left. Last is magnitude -1.1 Mercury, 1 finger-width to the lower right. Be quick, as all three set soon after the sun.

23 May    Mercury is little more than 1 finger-width to Venus’ right or upper right.

24 May    Rising less than 20 minutes before sunrise, the nearly full moon is low in the southeast at midnight in the head of the Scorpion.

25 May    Mercury, Venus and Jupiter form a tight triangle with Venus at the bottom, Jupiter to the upper left and Mercury to the upper right. Two fingers held at arm’s length will cover all three planets. Full moon at 0425 UT

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