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USPS Star Calendar for 24-30 April 17 April 2011

Posted by amedalen in April 2011.
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25 Apr    Rising 4 hours before the sun, the moon is high in the southeast at first light. Magnitude 0.9 Altair is 2.5 fist-widths above the moon. Last-quarter moon at 0247 UT, 2247 EDT yesterday

26 Apr    Although it’s still spring, the Summer Triangle is already prominent in the early morning sky. Its three stars—Vega, Deneb and Altair—rise above the horizon and are high overhead at dawn. An hour before sunrise, look for magnitude 0.9 Altair in the southeast, 3 fist-widths above and slightly to the right of the moon. Magnitude 1.3 Deneb is 3.5 fist-widths to Altair’s upper left. From Deneb, look 2.5 fist-widths to the upper right, nearly overhead, for magnitude 0.1 Vega.

29 Apr    The thin waning crescent moon rises 2 hours before the sun. Only 15 percent is illuminated. Magnitude -3.9 Venus is a little more than 1 fist-width to the moon’s lower left, and magnitude 1.0 Mercury is 2 finger-widths beyond Venus. The moon is at apogee, 63.66 Earth-radii away.

30 Apr    Only 3 finger-widths to the moon’s lower right this morning, Venus rises only an hour before the sun, so look quickly before it gets lost in the glare.

USPS Star Calendar for 17 to 23 April 10 April 2011

Posted by amedalen in April 2011.
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17 Apr    Low in the east at sunset, the nearly full moon lines up with Spica, 2 finger-widths above the moon, and Saturn, 1 fist-width above Spica. Tomorrow morning, they hold the line low in the west with Spica and Saturn to the moon’s right. The moon is at perigee, 56.15 Earth-radii away.

18 Apr    Full Pink Moon at 0244 UT, 2244 EDT yesterday

19 Apr    The moon rises 2.5 hours after sunset. More than 95 percent of the moon’s surface is illuminated.

20 Apr    Low in the south before dawn, the moon is in the head of Scorpius, the Scorpion. The red star Antares is 4 finger-widths to the left.

21 Apr    Antares is 3 finger-widths to the waning gibbous moon’s lower right this morning. More than 80 percent of the moon’s surface is illuminated.

22 Apr    Rising a little after midnight, the moon is to the upper right of the Teapot constellation, Sagittarius, low in the south before dawn. About 75 percent of the moon’s surface is illuminated.

23 Apr    Before dawn, the moon is to the upper left of Sagittarius.

USPS Star Calendar for 10 to 16 April 3 April 2011

Posted by amedalen in April 2011.
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10 Apr    The moon is directly above Orion and below the Gemini Twins at sunset. Procyon is 1.5 fist-widths to the lower left.

11 Apr    The Gemini Twins are 1 fist-width to the moon’s right. First-quarter moon at 1205 UT

12 Apr    The moon is high in the south at dusk. Magnitude 1.3 Regulus, the brightest star in Leo, the Lion, is 1.5 fist-widths to the moon’s left or upper left, and Procyon is 2 fist-widths to the lower right. Fifty years ago today Soviet cosmonaut Yuri Gagarin made the first manned Earth orbit.

13 Apr    Regulus is 3 finger-widths to the waxing gibbous moon’s upper left tonight. More than 66 percent of the moon’s surface is illuminated.

14 Apr    The waxing gibbous moon is high in the southeast at evening twilight. Regulus is 1.5 fist-widths to the upper right and magnitude 0.4 Saturn is 3 fist-widths to the lower left. Use binoculars to see magnitude 2.9 Porrima 1 finger-width to Saturn’s upper right.

15 Apr    The equation of time is zero. Apparent solar time (sundial time) and mean solar time are the same.

16 Apr    As the sky darkens, magnitude 0.4 Saturn becomes visible 4 finger-widths to the moon’s upper left. Magnitude 1.2 Spica appears 1 fist-width to the moon’s lower left. Magnitude 0.2 Arcturus is 3.5 fist-widths to the left, and the Big Dipper is nearly upside down far to the upper left.

USPS Star Calendar for 3 to 9 April 27 March 2011

Posted by amedalen in April 2011.
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3 Apr    New moon at 1432 UT

6 Apr    The Pleiades Cluster is 3 finger-widths above the waxing crescent moon in the west at sunset. Less than 10 percent of the moon’s surface is illuminated.

7 Apr    The Pleiades Cluster is 4 finger-widths to the moon’s lower right tonight. Magnitude 1.1 Aldebaran is the same distance to the left, and Orion is farther left. Using binoculars, try to spot the two magnitude 4.4 stars to the moon’s upper left, kappa Tauri and upsilon Tauri.

8 Apr    Aldebaran, the brightest star in Taurus, the Bull, is 1 fist-width below the moon at sunset. Magnitude 1.8 Elnath is 3 finger-widths to the moon’s upper right, and magnitude 3.0 zeta Tauri is 3 finger-widths to its upper left. Orion is to the lower left. About 20 percent of the moon’s surface is illuminated.

9 Apr    High in the west at sunset, magnitude 0.2 Capella is 2.5 fist-widths to the waxing crescent moon’s right, and magnitude 0.5 Procyon is the same distance to its upper left. The Gemini Twins are 2 fist-widths above the moon, and Orion is to the lower left. About 25 percent of the moon’s surface is illuminated.

USPS Star Calendar for 27 March to 2 April 20 March 2011

Posted by amedalen in April 2011, March 2011.
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27 Mar    Rising well after midnight, the waning crescent moon is to the left of Sagittarius low in the southeast at dawn.

29 Mar    Venus is 2 fist-widths to the moon’s lower left this morning. The bright star 3 fist-widths above the moon is magnitude 0.9 Altair, in the constellation Aquila, the Eagle.

30 Mar    Venus is 4 finger-widths to the moon’s lower left this morning.

31 Mar    Look low in the east before dawn to see Venus 2 finger-widths to the moon’s lower right. About 10 percent of the moon’s surface is illuminated.

2 Apr    Following its closest perigee on 19 March, the moon reaches its farthest apogee for the year, 63.76 Earth-radii away.