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USPS Star Calendar for 11-17 September 4 September 2011

Posted by amedalen in September 2011.
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11 Sep    Rising a half-hour before sunset, the moon is high in the southeast before midnight. Magnitude 1.3 Fomalhaut is 2.5 fist-widths to the lower right, Altair is 5 fist-widths to the upper right, and Jupiter is the same distance to the lower left.

12 Sep    The full moon closest to the autumnal equinox, the Harvest Moon, occurs at 0927 UT.

13 Sep    Early tonight, magnitude -2.7 Jupiter is nearly 3 fist-widths to the moon’s lower left in the southeast. Watch as the moon catches up with Jupiter the next few evenings.

14 Sep    Jupiter is only 1.5 fist-widths to the moon’s lower left tonight. More than 90 percent of the moon’s surface is illuminated. Try to spot magnitude 3.7 eta Piscium, 2 finger-widths to the moon’s left. [Binoculars]

15 Sep    The moon rises late tonight, a little more than a half-hour before Jupiter, which is 3 finger-widths below. The moon is at apogee, more than 405,000 kilometers or 63.67 Earth-radii away.

16 Sep    High in the southwest at first light, the moon and Jupiter rise 2 hours after sunset. Jupiter is 4 finger-widths to the moon’s right. Tomorrow morning, they are high in the southwest with Jupiter nearly 1 fist-width below the moon.

17 Sep    Tonight, the moon rises late, about 40 minutes after Jupiter. The Pleiades Cluster is to the moon’s left. [Binoculars]