APRIL 2023 OBSERVING Lunar Almanac Northern Hemisphere Sky Chart 8 April 6 23 26 θ MOON PHASES MON SUN TUE WED THU FRI 2 9 16 23 30 3 10 17 24 4 11 18 25 5 12 19 26 6 13 20 27 7 14 21 28 1 8 15 22 29 SAT Yellow dots indicate which part of the Moon's limb is tipped the most toward Earth by libration. NASA / LRO FULL MOON April 6 04:35 UT NEW MOON April 20 04:13 UT DISTANCES Perigee LAST QUARTER April 13 09:11 UT FIRST QUARTER April 27 21:20 UT April 16, 02h UT 367,970 km Diameter 32′ 28″ Apogee April 28, 07h UT 404,299 km Diameter 29′ 34″ FAVORABLE LIBRATIONS * Pettit Crater * Glushko Crater * Abel Crater * Helmholtz Crater April 6 April 8 April 23 April 26 42 APRIL 2023 * SKY & TELESCOPE Galaxy Double star -1 1 2 3 4 Planet location shown for mid-month USING THE NORTHERN HEMISPHERE MAP Go out within an hour of a time listed to the right. Turn the map around so the yellow label for the direction you're facing is at the bottom. That's the horizon. The center of the map is overhead. Ignore the parts of the map above horizons you're not facing. Exact for latitude 40°N. -40° c 10 i n g E C L I P Moon Apr 5 T I C COMA BERENICES S ERP ENS M5 E g -1 0 1 2 3 4 a Galaxy Double star Variable star Open cluster Diffuse nebula Globular cluster Planetary nebula S E U R S A M A J O R Big Dipper Mizar & Alcor α η 19h ζ π β ε 16h F a H Y D R A A N T L I 13h F a +60° β H E U S r o N 2h C R A T E R CORVUS Spica V I RGO SEXTANS L E O Re LEO MINOR M51 B O Ö T E S Arcturus α CANES VENATICI Little Dipper U R S A M I N O R D R A C O β ξ ν γ ε ζ η CORONA BOREALIS δ H E R C U L E S M13 M3 ε s t Thuban Vega M92 g n c i γ δ α β ε β η γ α α ζ η γ δ α β β β α ε c i n a α α β h t α η ζ ν ε δ β γ γ α µ γ β c i n g F a F E N