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USPS Star Calendar for 1 to 7 August 25 July 2010

Posted by amedalen in August 2010.
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1 Aug
Near the western horizon at sunset, Mars is 1 finger-width to Saturn’s lower left, and Venus is 3 finger-widths to the lower right. Today is Lammas, a cross-quarter day marking the beginning of the harvest season.

3 Aug
Last-quarter moon at 0459 UT

4 Aug
Just before dawn, the waning crescent moon stands to the right of the Pleiades high in the east. Aldebaran is 1½ fist-widths below, and Orion lies beyond Aldebaran, close to the horizon. Use binoculars.

6 Aug
This evening, Venus is little more than 1 finger-width directly below Saturn. Meanwhile, Mars has slipped a little to the upper left.

USPS Star Calendar for 25 to 31 July 18 July 2010

Posted by amedalen in July 2010.
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25 Jul
Full Thunder Moon at 0136 UT tomorrow morning, or 2136 EDT tonight

27 Jul
Tonight, magnitude 0.1 Mercury passes within 0.29 degree of magnitude 1.3 Regulus, making this the year’s closest planet-first magnitude star appulse. They set more than an hour after sunset, so you will have a good opportunity to see this event.

28 Jul
Low in the west at sunset, magnitude 1.5 Mars is 1 finger-width below magnitude 1.1 Saturn, and magnitude -4.2 Venus is 4 finger-widths to the lower right. The moon is at apogee, 63.65 Earth-radii away.

30 Jul
Jupiter rises less than a half-hour after the moon late this evening.

31 Jul
High in the south before dawn, Jupiter is 3 finger-widths below the moon. Tonight, Mars and Saturn pass within 1 finger-width, with magnitude 1.5 Mars to the lower left of magnitude 1.1 Saturn.

USPS Star Calendar for 18 to 24 July 11 July 2010

Posted by amedalen in July 2010.
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18 Jul
First-quarter moon at 1010 UT

20 Jul
The moon is in the head of the Scorpion, Scorpius.

21 Jul
Magnitude 1.1 Antares is 3 finger-widths to the moon’s right this evening.

23 Jul
The moon is just above the handle of the Teapot constellation, Sagittarius.

USPS Star Calendar for 11 to 17 July 4 July 2010

Posted by amedalen in July 2010.
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11 Jul
Regulus
sinks rapidly toward the evening horizon while Venus appears stationary. New moon at 1940 UT

13 Jul
As the sky begins to darken, look for Regulus 4 finger-widths to the upper left of the thin waxing crescent moon. Brilliant Venus is to the upper left of Regulus. The moon is at perigee, 56.62 Earth-radii away.

14 Jul
Regulus is 1 fist-width to the right of the moon, and Venus is to the moon’s upper right.

15 Jul
Venus
is 1½ fist-widths to the moon’s right low in the west at sunset. Mars is 3 finger-widths to the moon’s upper right, and Saturn is 1 fist-width above.

16 Jul
During the next 3 weeks, watch Mars and Saturn grow closer as Venus creeps in from the lower right.

17 Jul
Tonight, magnitude 1.2 Spica is 1 finger-width above the moon, and Scorpius is far to its left.