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    Articles > August 2023
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Guide to the Night Sky 2023
2023 Guide to the Night Sky

A monthly guide to the night sky in 2023 with star charts, sky calendar, planet data, moon phases, and meteor showers.
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All sky watchers need a planisphere to quickly show the location of stars and constellations for any date and time. Note: Planispheres are designed for specific latitudes so be sure to select one for your latitude.

Guide to the Stars

(5th Edition, Jan. 2013)
A very large 16-inch diameter information-rich planisphere (plastic) for use anywhere between latitude 30° & 60° North. Also available in a Southern Hemisphere edition.
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The Night Sky Planisphere

A very popular 8-inch diameter, two-sided planisphere (plastic) designed to depict the night sky with less distortion than regular planispheres. Available for several latitudes, and in a smaller 5-inch edition.
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  Sky Calendar -- August 2023
1 Full Moon at 18:32 UT. The first of two Full Moons this month.
2 Moon at perigee (closest to Earth) at 5:58 UT (distance 357,311km; angular size 33.4'). Only 11.4 hours after Full Moon.
3 Moon near Saturn at 13h UT (morning sky). Mag. 0.6.
Saturn (Wikipedia)
8 Moon near Jupiter at 9h UT (morning sky). Mag. −2.4.
Jupiter (Wikipedia)
8 Last Quarter Moon at 10:29 UT.
9 Moon near the Pleiades at 15h UT (morning sky).
The Pleiades (Wikipedia)
10 Mercury at greatest elongation east at 2h UT (27° from Sun, evening sky). Mag. 0.4.
Mercury (Wikipedia)
12 Moon near M35 star cluster at 4h UT (47° from Sun, morning sky).
13 Perseid meteor shower peaks at 7h UT. Peak lasts about 12 hours. Active from July 14 to September 1. Produces swift, bright meteors (50-75 per hour) with persistent trains. Best viewed after midnight. Excellent viewing conditions in 2023.
Perseids (Wikipedia)
2023 Meteor Shower Calendar (PDF)
13 Mercury 4.7° WSW of Mars at 8h UT (31° from Sun, evening sky). Mags. 0.5 and 1.8.
Mercury (Wikipedia)
Mars (Wikipedia)
13 Venus at inferior conjunction with the Sun at 11h UT. The brightest planet passes into the morning sky.
Venus (Wikipedia)
13 Moon near Castor at 17h UT (32° from Sun, morning sky).
13 Moon near Pollux at 22h UT (28° from Sun, morning sky).
16 New Moon at 9:38 UT. Start of lunation 1245.
16 Moon at apogee (farthest from Earth) at 12h UT (distance 406,635km; angular size 29.4').
18 Moon near Mercury at 19h UT (evening sky). Mag. 0.8.
Mercury (Wikipedia)
19 Moon near Mars at 2h UT (evening sky). Mag. 1.8.
Mars (Wikipedia)
21 Moon near Spica at 13h UT (evening sky).
Spica (Wikipedia)
24 First Quarter Moon at 9:57 UT.
25 Moon near Antares at 3h UT (evening sky). Occultation visible from USA and southern Canada.
Antares (Wikipedia)
Occultation of Antares (IOTA)
27 Saturn at opposition (opposite the Sun) at 8h UT. The planet is at its closest and brightest at Mag. 0.4. Saturn's rings are visible even in a small telescope.
Saturn (Wikipedia)
30 Moon at perigee (closest to Earth) at 16:00 UT (distance 357,181km; angular size 33.5'). Only 9.6 hours before Full Moon.
30 Moon near Saturn at 21h UT (midnight sky). Mag. 0.4.
Saturn (Wikipedia)
31 Full Moon at 1:36 UT. A Blue Moon and the closest Supermoon in 2023.
All times Universal Time (UT).
  • US Eastern Daylight Time = UT − 4 hours.
  • US Pacific Daylight Time = UT − 7 hours.
  • Australian Eastern Standard Time = UT + 10 hours
  • Singapore Standard Time = UT + 8 hours.

Clear skies till next month!

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