A table listing some of the Astronomical Phenomena for October 2017:
Phenomena October
| Day (UT) | Time (UT) | Event |
|---|---|---|
| 3 | 05:56 | Venus at perihelion 0.718 AU (approx. 107 million kilometres or 66.7 million miles) from the Sun. |
| 3 | 12:15 | Neptune (mag. 7.8) 0.7 degrees north of the Moon. |
| 5 | 13:27 | Mars (mag. 1.8) 0.2 degrees south of Venus (mag. -3.9). |
| 5 | 18:41 | Full moon. |
| 6 | 16:26 | Uranus (mag. 5.7) 4.2 degrees north of the Moon. |
| 7 | 22:28 | Mars (mag. 1.8) is at aphelion 1.666 AU (approx. 249.2 million km or 154.9 million miles) from the Sun. |
| 8 | 05:14 | Mercury at superior conjunction. |
| 9 | 06:03 | Moon at perigee approx. 366,857 kilometres or 227,954 miles from Earth. |
| 9 | 18:31 | Moon 0.6 degrees north of Aldebaran. |
| 12 | 12:26 | Last quarter moon. |
| 12 | 22:14 | Moon 9.2 degrees south of Pollux (mag. +1.1). |
| 13 | 02:29 | Mercury (mag. -1.3) 2.9 degrees north of Spica (mag. +1.0). |
| 15 | 11:19 | Moon 0.2 degrees north of Regulus (mag. +1.4), occultation visible from USA and Mexico |
| 16 | 11:39 | Dwarf planet Eris (mag 18.7) is at opposition in Cetus |
| 17 | 10:05 | Mars (mag. 1.8) 1.8 degrees south of the Moon. |
| 18 | 00:21 | Venus (mag. -3.9) 2 degrees south of the Moon. |
| 19 | 09:38 | Moon 6.9 degrees north of Spica (mag. +1.0). |
| 19 | 17:34 | Uranus (mag. 5.7) at opposition 18.915 AU (approx. 2829.6 million kilometres or 1758.3 million miles) from Earth. |
| 19 | 19:13 | New moon. |
| 21 | 00:00 | Orionids meteor shower peaks ZHR = 25 (can vary between 20 and 70) |
| 23 | 04:57 | Moon 9.5 degrees north of Antares. |
| 24 | 11:36 | Saturn (mag. 0.6) 3.3 degrees south of the Moon. |
| 25 | 02:31 | Moon at apogee approx. 405,150 kilometres or 251,748 miles from Earth. |
| 27 | 05:26 | Jupiter at solar conjunction. |
| 27 | 22:23 | First quarter moon. |
| 29 | 12:16 | Mercury at aphelion 0.467 AU (approx. 69.9 million km or 43.4 million miles) from the Sun. |
| 30 | 20:56 | Neptune (mag. 7.8) 0.9 degrees north of the Moon. |