MAY 2023 OBSERVING Lunar Almanac Northern Hemisphere Sky Chart 10 8 May 6 Yellow dots indicate which part of the Moon's limb is tipped the most toward Earth by libration. NASA / LRO 24 MOON PHASES MON SUN 1 7 14 21 28 8 15 22 29 2 9 16 23 30 TUE 3 10 17 24 31 β M3 α ε FULL MOON May 5 17:34 UT NEW MOON May 19 15:53 UT DISTANCES Perigee LAST QUARTER May 12 14:28 UT 0° FIRST QUARTER May 27 15:22 UT May 11, 05h UT 369,344 km Diameter 32′ 21″ Apogee May 26, 02h UT 404,508 km Diameter 29′ 32″ FAVORABLE LIBRATIONS * Vasco da Gama Crater May 6 * Gerard Crater May 8 * Brianchon Crater * Hale Q Crater 42 MAY 2023 * SKY & TELESCOPE Galaxy Double star May 10 May 24 -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 i n g 13 C B WED 4 11 18 25 THU 5 12 19 26 FRI 6 13 20 27 Zenith SAT π γ CORONA BOREALIS E g -1 0 1 2 3 4 a Galaxy Double star Variable star Open cluster Diffuse nebula Globular cluster Planetary nebula β α γ S E M51 Mizar & Alcor r +60° Little Dipper γ η β URSA MINOR µ S IOPE IA r o N γ β 19h F a SCORP IUS M4 Antares c i n g α η π ε ζ β HERCULES δ µ α F c i n a s t δ χ α β ε a F g n c i CYGNUS Deneb M29 Northern Cross Albireo E N M52 α h t Spica 16h Moon May 5 F a R M57 22h M27 V IRGO ζ κ β CEPζHEUS δ ε Thuban DRACO Vega αLYRA ε M39 SAGI TTA VULPECULA M13 M92 AQUI LA BOÖTES Arcturus SERPENS (CAPUT ) M5 ι CEθNTAURUS LUPUS L IBRA α M12 M10 OPHIUCHUS δ α ζ IC4665 γ 70 SERPENS (CAUDA) η β α γ α α η γ β ε β δ π α β δ α γ β