261.

Conjunction of the Moon and Venus The Moon and Venus share the same right ascension, at a separation of 25'. Sun, 08 Sep 2013 at 17:04 EDT (3,884 days ago) in Virgo

262.

Close approach of Mars and M44 Mars and M44 pass close to each other. Sun, 08 Sep 2013 at 18:37 EDT (3,884 days ago) in Cancer

263.

Asteroid 324 Bamberga at opposition Asteroid 324 Bamberga makes closest approach to the Earth. Sun, 08 Sep 2013 at 22:22 EDT (3,884 days ago) in Pisces

264.

September ε-Perseid meteor shower 2013 The September ε-Perseid meteor shower reaches its peak. Mon, 09 Sep 2013 (3,883 days ago) in Perseus

265.

Close approach of the Moon and Saturn The Moon and Saturn pass close to each other. Mon, 09 Sep 2013 at 12:09 EDT (3,883 days ago) in Libra

266.

Conjunction of the Moon and Saturn The Moon and Saturn share the same right ascension, at a separation of 2°21'. Mon, 09 Sep 2013 at 13:08 EDT (3,883 days ago) in Libra

267.

September Naked Astronomy podcast released Space Boffins Sue Nelson Mon, 09 Sep 2013 (3,882 days ago)

268.

Lunar occultation of Beta1 Scorpii The Moon will pass in front of Beta1 Scorpii (Acrab), creating a lunar occultation visible from Mongolia and Russia. Wed, 11 Sep 2013 at 08:17 EDT (3,881 days ago) in Scorpius

269.

Moon at First Quarter The Moon reaches first quarter phase – appearing high in the sky at sunset and setting in the west at around midnight. Thu, 12 Sep 2013 at 13:08 EDT (3,880 days ago) in Ophiuchus

270.

The Moon at perigee The Moon makes its monthly closest approach to the Earth, making it appear fractionally larger than at other times of the month. Sun, 15 Sep 2013 at 12:30 EDT (3,877 days ago) in Capricornus

271.

The Moon at aphelion The Moon recedes to its orbit's furthest point from the Sun, which happens each month around the time of full moon. Tue, 17 Sep 2013 at 05:21 EDT (3,875 days ago) in Aquarius

272.

Close approach of Venus and Saturn Venus and Saturn pass within 3°28' of each other. Wed, 18 Sep 2013 at 11:54 EDT (3,874 days ago) in Libra

273.

Full Moon The Moon reaches full phase and is visible for much of the night. Thu, 19 Sep 2013 at 07:12 EDT (3,873 days ago) in Pisces

274.

Conjunction of Venus and Saturn Venus and Saturn share the same right ascension, at a separation of 3°45'. Thu, 19 Sep 2013 at 20:17 EDT (3,873 days ago) in Libra

275.

136472 Makemake at solar conjunction 136472 Makemake is unobservable as it passes around the far side of the Sun – marking the end of one apparition and the beginning of the next. Sun, 22 Sep 2013 at 06:12 EDT (3,870 days ago) in Coma Berenices

276.

1 Ceres at perihelion 1 Ceres passes its orbit's closest point to the Sun. Sun, 22 Sep 2013 at 10:26 EDT (3,870 days ago) in Leo

277.

September equinox Day and night have equal length, marking the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. Sun, 22 Sep 2013 at 16:48 EDT (3,870 days ago) in Virgo

278.

Asteroid 89 Julia at opposition Asteroid 89 Julia makes closest approach to the Earth. Mon, 23 Sep 2013 at 03:10 EDT (3,869 days ago) in Pegasus

279.

Supernova ASASSN-13dd discovered A new supernova has been discovered in NGC 2765. Mon, 23 Sep 2013 (3,868 days ago)

280.

September Naked Astronomy podcast released Dominic Ford reports from the European Planetary Science Congress, where he heard about the latest misisons to Mars and the Moon. Lewis Dartnell explains how the ExoMars mission, due to land on Mars in 2018, will go about looking for signs of lifeforms t... Tue, 24 Sep 2013 (3,867 days ago)