Facing North 13h r za r Mi Alco & Di g Bi er pp +60° ` h 10 h 16 SA R UR JO A M R PA DA ci b U ne A G N De 9 M3 ¡ b ` b +60° Y RT C TA M27 Double Cluster _ S ¡ EUS AS US M1 5 ` US RN _ Gre a of P t Squ ega are sus a PE G _ ` IC PISCES O Y PR 0° Mo Dec on 10 CA N X LIS CASSIOPEIA + Circlet _ Altair _ LO S M De oon c1 4 Facing West ME _ L AQUILA +80° E AC SAGIT S a CE P S 7 ` L M5 Y R ga Ve _ CA HE U M IE Jupiter Saturn Moon Dec 7 IU S C E T U S S R S U ireo Alb L _ Polaris _ U N DELPHINU n 2 k 3 ` LU R ` l Rige P LE A A a M3 GU A TA U R U S Hyades Aldebaran M42 g ID Fa +80° URS A MINO R Lit D i p pt lee r ANDROMEDA EQUUL ci 1 M8 4 IAN TR Pleiades i Mira R H ` DR AC O M3 gol Al ` S Zenith Zenith +20° _ h 19 M31 a I C E Q U A T O R E C Fa R SE U _ T R _ PE I ` GA c trix a Bella I P E M8 Cap ella AU R M38 M36 5 L L S ` M37 M3 _ se C U E Ca s tor GE M IN I lgeu N Bete IO OR ` E n W g N E Pol lux 7h Facing East M De oo c n 18 g _ Map instructions can be found on page 9. DE C E M BE R | 2021 SK YC H A RT N WHEN TO USE THIS MAP Early November - 10 pm Late November - 9 pm Early December - 8 pm Late December - 7 pm n SE alh m Fo 4h A -40° SW t au ci g _ g Fa A Q U A -20° IS S SC NU PI TRI US Fa 22h ci n STAR MAGNITUDES 1h -1 0 1 2 3 4 Facing South SYMBOLS 12/14: Danish astronomer Tycho Brahe born, 1546 Galaxy Double star 12/15: Caroline Herschel discovers Comet Herschel (C/1791 X1), 1791 Variable star 12/19: William Herschel discovers the galaxy pair NGC 3166 and NGC 3169 in Sextans, 1783 Open cluster Diffuse nebula 12/23: Giovanni Cassini discovers Saturn's moon Rhea, 1672 Globular cluster 12/27: German astronomer and mathematician Johannes Kepler born, 1571 Planetary nebula 12/31: Johann Elert Bode discovers galaxies M81 and M82 in Ursa Major, 1774 SK Y WATCH 2021 57