DECEMBER 2020 OBSERVING Lunar Almanac Northern Hemisphere Sky Chart North γ δ Di g Bi er pp SA R UR JO A M β α Fa θ ci n g N M8 E 1 Yellow dots indicate which part of the Moon's limb is tipped the most toward Earth by libration. M8 2 N X α CA +80° ME LO R PA DA LIS OPEIA Double Cluster β TR R Diameter 33′ 02″ 405,011 km Diameter 29′ 30″ UT December 6 * Andersson Crater December 8 * Vashakidze Crater December 18 * Compton Crater December 20 DECEMBER 2 02 0 * SK Y & TELESCOPE g n December 24, FAVORABLE LIBRATIONS 42 R ID α ci Apogee * Rydberg Crater E A πC N eti U τ S η C E T U S -20° Fa 17h 3 β γ 361,773 km 1 2 3 4 M α ο θ S December 12, 21h UT LU l ma l Mira rs U Perigee α GU S Ha IE β Ma α ε 0 DISTANCES M3 IAN A η γ γ β P E Q U A T O R -1 03:28 UT 60° ρ Pleiades TA U R U S Aldebaran Hyades εθ α trix Bella M De oon c2 5 α P LE α 23:41 UT ε M 34 γ l E Alg o β RS US IC δ γ α ε ζ T γ December 30 ι ζ December 21 P λ FULL MOON N IO OR FIRST QUARTER δ ε 16:17 UT I β Rige 00:37 UT M42 December 14 α se December 8 L lgeu ζ NEW MOON κ LAST QUARTER C β E Bete 31 MONOCEROS 26 NGC 2244 30 h 29 7 28 25 24 Facing East 27 23 PE 19 δ 18 ε 17 a 16 GA 15 RI 14 AU 13 M38 M36 12 M37 11 θ 10 M3 5 9 n oo 29 M ec D 8 γ 7 22 Y 5 α 4 Cap ell 3 β 2 21 Polaris GE M S AT FRI THU IN I WED 1 6 20 L r TUE MON ο sto α β MOON PHASES SUN A OR Pol lux N ASA / LRO Ca 6 December 8 ε 10 h 20 18 h D G Va oub ala Op arbialb lests yxy e a D n G iff ecn lests trar Pl lob use luclsut atrar se an ul en et ar beub trer clu lual ar a y ne tsetre bu r la Planet location shown for mid-month SE 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. 4h FO RN AX α -40° PHO 1 Facing