Sky and Telescope - January 2013 - (Page 44) Sky at a Glance JANUARY 2013 2 Using the Map 60° roughly two hours centered on 9:48 p.m. PST (12:48 a.m. on the 21st EST); see page 53. 21 EVENING AND NIGHT: Jupiter is spectacularly M44 close to the waxing gibbous Moon. They’re closest — less than 1° apart as seen from most of the U.S. and Canada — around 11 p.m. EST (8 p.m. PST). The Moon occults (hides) Jupiter for much of South America. 23 EVENING: Algol is at minimum brightness for M Jan oon 26 roughly two hours centered on 9:37 p.m. EST (7:37 p.m. MST). Mo Jan on 22 Ald eb ara n Planet Visibility ◀ SUNSET SHOWN FOR LATITUDE 40° NORTH AT MID-MONTH MIDNIGHT SUNRISE ▶ Mercury Venus Mars Jupiter Saturn Invisible to the unaided eye all month SE SW E S E NW S TA UR US 2 Moon Phases Last Qtr Jan. 4 10:58 p.m. EST First Qtr Jan. 18 6:45 p.m. EST S UN MON TUE WED ERID ANUS LE PU S New Jan. 11 2:44 p.m. EST Full Jan. 26 11:38 p.m. EST THU FR I S AT 1 6 13 20 27 7 14 21 28 8 15 22 29 2 9 16 23 30 3 10 17 24 31 4 11 18 25 5 12 19 26 Galaxy Double star Variable star Open cluster Diffuse nebula Globular cluster Planetary nebula ng SE 6h C O LU M B A CA EL UM IS 20 NIGHT: Algol is at minimum brightness for Jupi Hya des ter Plei ade s E C L I Facing 80° AM to the right of 1st-magnitude Mars low in the southwest 30 to 60 minutes after sunset on the 12th. A thicker crescent Moon is well above Mars on the 13th. Polaris 12, 13 DUSK: A very thin crescent Moon is visible well ELO PAR DAL M82 M81 thin crescent Moon very low in the southeast 60 to 30 minutes before sunrise. See page 50. R 80° A 10 DAWN: Venus shines a few degrees from the S R EXACT FOR LATITUDE 40º NORTH. URSA INOR U M R A to the right of Spica on the 5th and lower right of Saturn on the 6th. JO in 5, 6 DAWN: In the Americas, the Moon appears close Thuban Di point to the Sun for the year (just 3% closer than at aphelion in July). g Bi er pp r EARTH passes through perihelion, its closest r co Al M iza c Fa 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. Above it are the constellations in front of you. The center of the map is overhead. Ignore the parts of the map above horizons you’re not facing. orth 12 h OBSERVING g N E M LE IN O O LE O L Y N X CAN CER Castor Pollux GEMINI Capella PE M67 RS E 9 AURIGA h Facing East M48 U HYDRA M47 M46 S M38 M36 M37 S CANI R MINO Procyon M35 Be te lge us S RO CE NO MO C A N e O Be lla R IO M50 M tri x N 42 0° Si riu s ge Ri l IS Ad M 41 M A JO R ra ha –20 c Fa i –40 Table of Contents for the Digital Edition of Sky and Telescope - January 2013 Sky and Telescope - January 2013 Table of Contents Spectrum Letters 75, 50 & 25 Years Ago News Notes Curiosity Hits the Road Dark Matter in the Discovery Age Hot Products for 2013 In This Section January’s Sky at a Glance Binocular Highlight Planetary Almanac Northern Hemisphere’s Sky Sun, Moon & Planets Celestial Calendar Exploring the Solar System Deep-Sky Wonders Going Deep Telescope Workshop Tales from the Dwingeloo Radio Observatory Gallery Focal Point Sky and Telescope - January 2013 http://www.nxtbook.com/nxtbooks/newtrack/st_201811 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