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Articles > October 2009

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Sky Calendar -- October 2009

4	Full Moon at 6:11 UT.
6	Mercury at greatest elongation, 18° west from Sun (morning sky) at 1h UT. Mag. -0.4, low in the E before sunrise. Brilliant Venus nearby. Mag. -3.9.
7	Moon near the Pleiades (morning sky) at 22h UT.
8	Mercury, Venus and Saturn (morning sky) within a circle of diameter 5.8° at 7h UT (20° from Sun).
11	Last Quarter Moon at 8:56 UT.
12	Moon very near Mars (morning sky) at 1h UT. Mag. +0.7. Occultation visible from southern Indian Ocean. • Occultation of Mars (IOTA)
12	Moon near Beehive cluster (M44) (72° from Sun, morning sky) at 18h UT.
13	Venus 0.52° SSW from Saturn (22° from Sun, morning sky) at 10h UT. Mags. -3.9 and +1.1.
13	Moon at perigee (closest to Earth) at 12h UT (369,067 km; 32.4').
14	Moon near Regulus (51° from Sun, morning sky) at 7h UT.
16	Moon near Saturn (25° from Sun, morning sky) at 7h UT. Mag. +1.1.
16	Moon near Venus (21° from Sun, morning sky) at 14h UT. Mag. -3.9.
18	New Moon at 5:32 UT. Start of lunation 1074. • Lunation Number (Wikipedia)
21	Orionid meteor shower peaks. Arises from the debris field of Comet Halley. Active from October 2 to November 7. Produces very fast (66 km/sec), generally faint meteors (20 per hour). Observe in the pre-dawn hours of October 21st; radiant located near Orion's "club" asterism. Favorable viewing conditions this year. • Observing Meteors (Society for Popular Astronomy) • Meteor Shower Calendar 2009 (IMO)
21	Moon very near Antares (evening sky) at 16h UT. Occultation visible from Europe, NW Africa and NW Turkey. • Occultation of Antares (IOTA)
25	Moon at apogee (farthest from Earth) at 23h UT (distance 404,166 km; angular size 29.6').
26	First Quarter Moon at 0:41 UT.
27	Moon near Jupiter (evening sky) at 6h UT. Mag. -2.5.
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 2009 (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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