September 2008 Phenomena
Updated February 21, 2017 | Factmonster Staff 
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 |
