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1
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Mercury at greatest elongation west (23° from Sun, morning sky) at 20h UT. Mag. −0.3.
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1
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Moon at perigee (closest to Earth) at 21:54 UT (356,565 km; angular size 33.5'). Closest of 2018.
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2
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Full Moon at 2:24 UT.
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3
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Earth at Perihelion (closest to Sun) at 6h UT. The Sun-Earth distance is 0.983284 a.u. or 147.1 million kilometers.
• Sun at Aphelion and Perihelion (Anthony Ayiomamitis)
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3
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Moon near Beehive cluster M44 (morning sky) at 20h UT.
• Beehive Cluster (Wikipedia)
• M44: The Beehive Cluster (APOD)
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3
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Quadrantid Meteor Shower peaks at 22h UT. Active between December 28 and January 12. Produces up to 120 meteors per hour. Radiant is in northern Boötes.
• Quadrantids (Wikipedia)
• The Quadrantids (Gary Kronk)
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5
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Moon near Regulus (morning sky) at 8h UT. Occultation visible from Alaska, northern Canada, Greenland and Iceland.
• Occultation of Regulus (IOTA)
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8
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Last Quarter Moon at 22:25 UT.
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9
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Venus at superior conjunction with the Sun at 6h UT. Passes into the evening sky (not visible).
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11
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Moon near Jupiter and Mars (60° from Sun, morning sky) at 10h UT. Mags. −1.9 and 1.4.
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13
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Mercury 0.6° S of Saturn (20° from Sun, morning sky) at 8h UT. Mags −0.3 and 0.5.
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15
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Moon at apogee (farthest from Earth) at 2h UT (distance 406,464 km; angular size 29.4').
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17
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New Moon at 2:17 UT. Start of lunation 1176.
• Lunation Number (Wikipedia)
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24
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First Quarter Moon at 22:20 UT.
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27
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Moon near Aldebaran (evening sky) at 9h UT. Occultation visible from NW Canada, Alaska, NE Asia.
• Occultation of Aldebaran (IOTA)
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30
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Moon at perigee (closest to Earth) at 10h UT (358,994 km; angular size 33.3').
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31
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Moon near Beehive cluster M44 (midnight sky) at 7h UT.
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31
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Total Eclipse of the Moon begins at 12:52 UT and ends at 14:08 UT. Mid-eclipse at 13:30 UT. Partial phases begin at 11:48 UT and end at 15:11 UT. The Moon will appear red-orange in color during totality (the color of Earth's sunsets). Visible from west North America, the Pacific, Australia, New Zealand, Asia, Russia and India.
• Lunar Eclipses: 2011 - 2030 (NASA)
• Total Lunar Eclipse of 2018 January 31 (PDF) (NASA)
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31
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Full Moon at 13:27 UT.
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All times Universal Time (UT).
- USA Eastern Standard Time = UT − 5 hours.
- Australian Eastern Summer Time = UT + 11 hours
- Singapore Standard Time = UT + 8 hours.
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