Here’s a quick look at what’s going on in the sky during the month of September, 2011:
September 1 — Alpha Aurigid meteor shower peaks. Minor shower.
September 4 — First Quarter Moon, 2:39 p.m. One-half of the Moon appears illuminated by direct sunlight while the illuminated part is increasing.
September 9 — Epsilon Perseid meteor shower peaks. Minor Shower.
September 12 — Epsilon Eridanid meteor shower peaks. Minor Shower.
September 12 — Full Corn Moon, 5:26 a.m. The visible Moon is fully illuminated by direct sunlight. Though the Moon is only technically in this phase for a few seconds, it is considered “full” for the entire day of the event, and appears full for three days.
September 15 — Moon at apogee (its farthest point from the Earth).
September 20 — Last Quarter Moon, 9:39 a.m. One-half of the Moon appears illuminated by direct sunlight while the illuminated part is decreasing.
September 23 — Autumn Equinox, 5:06 a.m. The Sun crosses the Equator.
September 23 — Mars site above a waning crescent Moon.
September 27 — New Moon, 7:08 a.m. The Moon is not illuminated by direct sunlight.
September 28 — Moon at perigee (its closest point to the Earth). Because the Moon’s perigee comes so close to the New Moon, expect extremely high tides.