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Sky Calendar -- August 2010

3	Last Quarter Moon at 4:59 UT.
7	Mercury at greatest elongation, 27° east from Sun (evening sky) at 1h UT. Mag. +0.1.
8	Venus, Mars and Saturn within 4.8° diameter circle (47° from Sun, evening sky) at 7h UT. Mags. -4.2, +1.5 and +1.1.
8	Venus 2.7° SSW of Saturn (evening sky) at 11h UT. Mags. -4.2 and +1.1.
10	New Moon at 3:08 UT. Start of lunation 1084. • Lunation Number (Wikipedia)
10	Moon at perigee (closest to Earth) at 18h UT (357,857 km; 33.9'). Perigee is only 15 hours after New Moon so high tides are expected.
12	Moon near Mercury (27° from Sun, evening sky) at 0h UT. Mag. +0.6.
12	Perseid meteor shower maximum predicted between 12 Aug 18h UT & 13 Aug 7h UT. An earlier peak is predicted 9-14h UT on 12 Aug. Active from July 17 to August 24. Produces swift, bright meteors (50 to 100 per hour) many with persistent trains. Very favorable this year for this major shower. Skywatchers in North America should observe in the pre-dawn hours of 13 August. • Observing Meteors (Society for Popular Astronomy) • Perseids (Gary Kronk) • Dark Night for the Perseids (Sky & Telescope) • Meteor Shower Calendar (IMO) • Meteor Shower Calendar 2010 (PDF) (IMO)
13	Moon near Saturn (evening sky) at 2h UT. Mag. +1.1.
13	Moon near Venus (evening sky) at 8h UT. Mag. -4.3.
13	Moon near Mars (evening sky) at 14h UT. Mag. +1.5.
14	Moon near Spica (evening sky) at 16h UT.
16	First Quarter Moon at 18:14 UT.
18	Moon near Antares (evening sky) at 0h UT.
19	Venus 1.9° SW of Mars at 5h UT. Mags. -4.3 and +1.5.
20	Venus at greatest elongation, 46° east from Sun (evening sky) at 4h UT. Mag. -4.3.
24	Full Moon at 17:05 UT. • Full Moon Names (Wikipedia)
25	Moon at apogee (farthest from Earth) at 6h UT (distance 406,389 km; angular size 29.7').
27	Moon near Jupiter (morning sky) at 5h UT. Mag. -2.9.
31	Venus, Mars and Spica within 4.2° diameter circle (47° from Sun, evening sky) at 12h UT. Mags. -4.4, +1.5 and +1.0.
All times Universal Time (UT). USA Eastern Summer Time = UT - 4 hours.

Clear skies till next month!

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Sky Calendar References:

Astronomical Calendar 2010 (book) by Guy Ottewell
Starry Night Pro Plus v6.3 (software) by Imaginova
Sky & Telescope (magazine) by Sky Publishing
Astronomical Tables of the Sun, Moon and Planets (book) by Jean Meeus
Celestial Delights (book) by Francis Reddy and Greg Walz-Chojnacki

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