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USPS Star Calendar for 3-9 July 26 June 2011

Posted by amedalen in July 2011.
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3 Jul    At dusk, magnitude -0.3 Mercury is 1.5 fist-widths to the moon’s right, and Regulus is the same distance to the upper left.

4 Jul    Earth is at aphelion, its farthest distance from the sun, 1.01674 astronomical units or a little more than 152 million kilometers away, which is nearly 5 million kilometers farther than at perihelion on 3 Jan. Regulus is 3 finger-widths to the moon’s upper right tonight. Ten percent of the moon’s surface is illuminated.

5 Jul    Regulus is 1.5 fist-widths to the moon’s right tonight.

7 Jul    Tonight the moon forms a triangle with Saturn and Spica. Saturn is less than 1 fist-width to the moon’s upper right, and Spica is about 1 fist-width to the upper left. The moon is at perigee, 57.94 Earth-radii or about 370,000 kilometers away. A little more than one-third of the moon’s surface is illuminated.

8 Jul    Spica is 2 finger-widths to the moon’s upper right this evening. First-quarter moon at 0629 UT

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