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USPS Star Calendar for 10-16 February 3 February 2013

Posted by amedalen in February 2013.
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10 Feb    New at 720 UT, the moon rises and sets within a few minutes of the sun.

11 Feb    If you have a clear view of the western horizon at dusk, you can catch a glimpse of magnitude -0.9 Mercury 3 finger-widths to the waxing crescent moon’s lower left and magnitude 1.2 Mars 1 finger-width below Mercury. Watch them disappear below the horizon. Setting a little more than an hour after the sun, Mars is followed 15 minutes later by Mercury. The moon sets a half hour later. The equation of time is at the minimum for the year, -14.25 minutes. That means at noon mean solar time the sun has not reached the meridian; it will do so 14 minutes later.

12 Feb    Today is Shrove Tuesday or Mardi Gras (Fat Tuesday), the day before the season of lent begins.

13 Feb    Look low in the west at nightfall to spot magnitude 2.1 Alpheratz 2 fist-widths to the thin waxing crescent moon’s upper right. Magnitude 2.0 Mira is 2½ fist-widths to the upper left, and magnitude 2.2 Hamal is the same distance above the moon.

14 Feb    Mira, in the constellation Cetus, the Whale, is 2 fist-widths to the moon’s left tonight. To the ancient Greeks, Cetus was a sea monster that Perseus destroyed before it could attack Andromeda. Today is St. Valentine’s Day.

15 Feb    Early this evening, magnitude -2.4 Jupiter is 3 fist-widths to the waxing crescent moon’s upper left high in the west. Magnitude 1.1 Aldebaran is 3 finger-widths to the left or lower left of Jupiter, and Orion is a couple of fist-widths beyond Aldebaran. The moon is 25 percent illuminated.

16 Feb    Mercury reaches its greatest elongation east of the sun, a little over 18 degrees, and sets 1½ hours after the sun.

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