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USPS Star Calendar for 9 to 15 January 2 January 2011

Posted by amedalen in January 2011.
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9 Jan     Magnitude -2.3 Jupiter is 4 finger-widths to the moon’s left tonight. Visible just after sunset, the moon and Jupiter set before midnight. Less than one-fourth of the moon’s surface is illuminated. Mercury is at its greatest elongation, 23 degrees west of the sun, and rises more than 2½ hours before the sun.

10 Jan    The moon is at apogee, 251,655 miles or 63.49 Earth-radii away. Jupiter is 1 fist-width below the moon high in the southwest tonight. They set before midnight.

12 Jan    First-quarter moon at 1131 UT

14 Jan    The Pleiades Cluster is 2 finger-widths to the left or upper left of the waxing gibbous moon high in the southwest this evening. Today marks the start of the Julian new year. The Julian calendar was superseded by the Gregorian calendar in 1582.

15 Jan    The moon forms a triangle with the Pleiades and magnitude 1.1 Aldebaran. About three-fourths of the moon’s surface is illuminated.

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