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September

For terms in boldface, see Astronomical Terms.
Day Phenomenon Hour
3 Pallas, the second-largest asteroid, is at opposition. 0000
4 LAST QUARTER 0300
4 Mars is 6° south of the Moon. 1400
7 Venus appears to be motionless in the sky as it moves toward its greatest elongation west of the Sun from a position east of the Sun as viewed from Earth. 1400
7 Pluto appears to be motionless in the sky as it goes from retrograde to direct motion. 2200
8 Venus is 9° south of the Moon. 1900
9 Uranus is at opposition. 1900
10 Regulus, the brightest star in the constellation Leo, is 0° 2' south of the Moon. Occultation of Regulus by the Moon. 0100
10 Saturn is 0° 8' north of the Moon. Occultation of Saturn by the Moon. 0400
11 NEW MOON. Partial eclipse of the Sun. 1300
13 Mercury is 2° north of the Moon. 1400
15 The Moon is at apogee. 2100
18 Antares, the brightest star in the constellation Scorpius, is 0° 7' north of the Moon. Occultation of Antares by the Moon. 0800
18 Jupiter is 6° north of the Moon. 1500
19 FIRST QUARTER 1700
21 Ceres, the largest asteroid, appears to be motionless in the sky as it goes from direct motion to retrograde motion. 0300
22 Mercury is 0° 09' north of Spica, the brightest star in the constellation Virgo. 0900
23 Equinox. 1000
23 Neptune is 1° 4' north of the Moon. 1800
23 Venus is at its greatest illuminated extent. 2300
25 Uranus is 1° 9' south of the Moon. 1700
26 FULL MOON 2000
28 The Moon is at perigee. 0200
29 Mercury is at its greatest elongation, at 26° east of the Sun. 1600

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August Phenomena, 2007 October

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