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USPS Star Calendar for 31 July-6 August 24 July 2011

Posted by amedalen in August 2011, July 2011.
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1 Aug    Low in the west at dusk, Mercury is 4 finger-widths to the moon’s lower right. Tomorrow Mercury begins retrograde motion to the west and soon disappears into the sun’s glow.

2 Aug    The moon is at perigee, 57.35 Earth-radii or 366,000 kilometers away.

3 Aug    About an hour after sunset, look just above the western horizon to see magnitude 0.9 Saturn 4 finger-widths above the moon and magnitude 1.2 Spica 1.5 fist-widths to the upper left. Less than 20 percent of the moon’s surface is illuminated.

4 Aug    Magnitude 1.2 Spica is only 1 finger-width above the moon tonight.

6 Aug    First-quarter moon at 1108 UT

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USPS Star Calendar for 24-30 July 17 July 2011

Posted by amedalen in July 2011.
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24 Jul    Brilliant magnitude -2.4 Jupiter is about 4 finger-widths to the moon’s right before dawn.

25 Jul    The Pleiades Cluster is less than 2 finger-widths to the moon’s left just before dawn. Less than one-third of the moon’s surface is illuminated. [Binoculars]

26 Jul    Aldebaran is 3 finger-widths to the moon’s lower right before dawn. Mars is 1.5 fist-widths to the lower left. About 20 percent of the moon’s surface is illuminated.

27 Jul    Mars is only 1 finger-width to the moon’s lower left this morning. Less than 20 percent of the moon’s surface is illuminated.

28 Jul    Low in the east before dawn, magnitude 0.6 Betelgeuse, the brightest star in the constellation Orion, is 1.5 fist-widths to the moon’s right. Mars is 1 fist-width to the upper right. Try to spot magnitude 3.2 mu Geminorum less than 1 finger-width above the moon. Less than 10 percent of the moon’s surface is illuminated. [Binoculars]

30 Jul    New moon at 1840 UT

USPS Star Calendar for 17-23 July 10 July 2011

Posted by amedalen in July 2011.
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17 Jul    In the southwest before dawn, magnitude 0.9 Altair is 3 fist-widths to the moon’s right and magnitude 1.3 Fomalhaut is the same distance to the lower left.

19 Jul    Fomalhaut is nearly 3 fist-widths below the moon before dawn.

20 Jul    Mercury reaches its greatest elongation east 26.8 degrees from the sun. Low in the west at dusk, magnitude 0.5 Mercury is 3 finger-widths to the lower right of magnitude 1.3 Regulus.

22 Jul    Jupiter is 1.5 fist-widths to the moon’s lower left at first light. Mars is far to the left.

23 Jul    High in the east before dawn, Jupiter is 3 finger-widths to the moon’s lower left. Last-quarter moon at 0502 UT

USPS Star Calendar for 10-16 July 3 July 2011

Posted by amedalen in July 2011.
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11 Jul    The bright orange star 1 finger-width below the moon tonight is Antares, the heart of the Scorpion, Scorpius.

12 Jul    Rising side by side 2.5 hours before the sun, magnitude 1.4 Mars and magnitude 1.1 Aldebaran are 4 finger-widths apart with Mars on the left.

13 Jul    Tonight, the moon is above the dome of the Teapot constellation, Sagittarius.

15 Jul    Full moon at 0640 UT

16 Jul    The moon rises less than 1 hour after sunset.

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

USPS Star Calendar for 26 June-2 July 19 June 2011

Posted by amedalen in July 2011, June 2011.
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26 Jun    Jupiter is 2 finger-widths to the moon’s right this morning. They rise a little more than 2 hours before the sun. About 25 percent of the moon’s surface is illuminated.

27 Jun    The waning crescent moon lies midway between Jupiter, 1.5 fist-widths to the upper right, and magnitude 1.4 Mars, the same distance to the lower left. The Pleiades Cluster is 3 finger-widths above Mars.

28 Jun    The moon is nearly 2 finger-widths above Mars this morning. With your binoculars, try to spot magnitude 4.5 37 Tauri between them. They rise a little more than two hours before the sun. The Pleiades Cluster is 1 finger-width above the moon.

1 Jul    New moon at 0854 UT

2 Jul    Today marks the year’s midpoint. Mercury is 3 finger-widths to the upper right of the thin waxing crescent moon tonight. Less than 5 percent of the moon’s surface is illuminated.