A table listing some of the Astronomical Phenomena for January 2018:
Phenomena January
| Day (UT) | Time (UT) | Event |
|---|---|---|
| 1 | 19:48 | Mercury (mag. -0.3) is at greatest elongation, 22.7 degrees west of the Sun. |
| 1 | 21:55 | Moon at perigee approx. 356,565 kilometres or 221,559 miles from the Earth. |
| 2 | 02:25 | Full moon. |
| 2 | 20:08 | Uranus (mag. 5.8) begins direct motion. |
| 2 | 23:27 | Moon 8.6 degrees south of Pollux (mag. +1.1). |
| 3 | 05:35 | Earth is at perihelion, 0.98333 AU (approx. 147.096 million kilometres or 91.402 million miles) from the Sun. |
| 3 | 22:00 | Quadrantids meteor shower peaks (ZHR = 60). |
| 5 | 07:49 | Moon 0.9 degrees north of Regulus (mag. +1.4), occultation visible from Alaska, Northern Canada, Greenland, Eastern Europe |
| 7 | 03:41 | Mars (mag. 1.4) 0.2 degrees south of Jupiter (mag. -1.9). |
| 8 | 20:44 | Venus at superior conjunction. |
| 8 | 22:26 | Last quarter moon. |
| 9 | 03:38 | Moon 7.4 degrees north of Spica (mag. +1.0). |
| 9 | 08:04 | Dwarf planet Pluto is in conjunction with the Sun. |
| 11 | 05:58 | Jupiter (mag. -1.9) 4.3 degrees south of Moon. |
| 11 | 10:03 | Mars (mag. 1.4) 4.6 degrees south of Moon. |
| 13 | 00:16 | Moon 9.5 degrees north of Antares. |
| 13 | 06:50 | Mercury (mag. -0.3) 0.6 degrees south of Saturn (mag. 1.4). |
| 15 | 01:56 | Saturn (mag. 0.6) 2.6 degrees south of Moon. |
| 15 | 02:24 | Moon at apogee approx. 406,459 kilometres or 252,562 miles from the Earth. |
| 15 | 07:22 | Mercury (mag. -0.3) 3.4 degrees south of Moon. |
| 17 | 02:18 | New moon. |
| 20 | 19:34 | Neptune (mag. 7.9) 1.6 degrees north of Moon. |
| 23 | 14:26 | Venus (mag. -4.0) at aphelion 0.728 AU (approx. 109 million kilometres or 67.7 million miles) from the Sun. |
| 24 | 01:10 | Uranus (mag. 5.8) 4.7 degrees north of Moon. |
| 24 | 22:21 | First quarter moon. |
| 25 | 11:31 | Mercury (mag. -0.4) at aphelion, 0.467 AU (approx. 69.9 million kilometres or 43.4 million miles) from the Sun. |
| 27 | 10:35 | Moon 0.7 degrees north of Aldebaran (mag. 0.9), occultation visible from Northwestern Canada, Alaska, Northeastern Asia. |
| 30 | 10:04 | Moon at perigee, approx. 359,000 kilometres or 223,100 miles from the Earth. |
| 30 | 10:55 | Moon 8.6 degrees south of Pollux (mag. +1.1). |
| 31 | 02:52 | Ceres at opposition 1.602 AU (approx. 239.7 million kilometres or 148.9 million miles) from the Earth. |
| 31 | 13:27 | Full moon, total lunar eclipse. |