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Efemérides para Febrero - Tesms1302 (1)


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  • 1. E INDICATED ALONG DIRECTIONS AR MPASS THE HO N . CO r & Pollux, were consi R IZ O N RI Z O h olo g y, C as t o dere d p C IR C E HO ek myt atro n LE ( M The Evening Sky Map D TH in s o f G re SOUTHERN HEMISPHERE F OR CO AN NORTH sain S. H t w ts o EXA NIT MP AP t he f se LE ZE es , a fa r E tim M er s “NO KY TH t . R TH E N n cie n .S pella FEBRUARY 2013 WE ”) . BE T In a W Ca TU W RN TE D W LY N T h THE FREE* EACH MONTH FOR YOU TO EXPLORE, LEARN & ENJOY THE NIGHT SKY CA X en LO a m KY S Get Sky Calendar on Twitter AR E AUR IGA e A MA SKY MAP SHOWS HOWSky Calendar – February 2013 C TS r. JE s te lp ha AR P THE NIGHT SKY LOOKS OB rd O U ra b S c lu M38 EU EARLY FEB 10 PM i ND ic a AL s2 Moon very near Spica (109° from Sun, morning sky) at 2h UT. ar RS A W I N st I ST PE TS nd m Castor M37 M36 LATE FEB 9 PM E N es t h CELE Occultation visible in Madagascar and southern Africa. CE d ya NT an Pollux GEMINI (Add 1 Hour For Daylight Saving) N. eH ER s “ s3 Moon near Saturn (morning sky) at 7h UT. Mag. +0.5. SKY MAP DRAWN FOR a n R I ZO (J e A LATITUDE OF 35° of US lita HO M353 Last Quarter Moon at 13:57 UT. es SOUTH AND IS T A ry on ce ad E ter ei CA o TH Jupi SY M4 M1 Pl SUITABLE FOR ist5 Moon near Antares (67° from Sun, morning sky) at 6h UT. N Si 4 IS de s OU LATITUDES UP CE ed ck Hy a C LE le R TO 15° NORTH AR7 Moon at perigee (closest to Earth) at 12h UT th γ n bara CIR e” E OR SOUTH ce N Alde LE S DO M6 IO (365,318 km; 32.7). Re d MI t wi U e OR 9 EC OF THIS T ER 7 us 2264 esc CA NOR O R ING gu lge LI U 6 Cr han NI lu PT ri b i TA E OU8 Mercury 0.27° NNW of Mars (15° from Sun, evening S e s et IC NOW B Den re t 2244 n gw M D TH sky) at 18h UT. Mags. –1.0 & +1.2. Pro ON ) SO mo eb cyo ell i n OC ola ) AN ER9 Moon near Venus (12° from Sun, morning sky) er i s THE ts OS 2232 ITH at 10h UT. Mag. –3.9. p o si t clust M4 2 σ C OM P 8 M50 M4 D ( ZE N β10 New Moon at 7:22 UT. Start of lunation 1115. ion in s star ASS DI M47 Rige Alp l Sirius RT OF THE SKY DIRECTLY OVERHEA PISCES11 Moon near Mars (15° from Sun, evening sky) at M4 har h e Plei ad e VIRG t 6 HY h e s k y. RECTION TH d 10h UT. Mag. +1.2. MAJOR DR Mira CANIS M41 O A11 Moon near Mercury (17° from Sun, evening sky) γ T k S PU at 16h UT. Mag. –0.9. CETUS 3242 LE AT APPEARS ALONG THE B WEST EAST C R AT E R16 Mercury at greatest elongation, 18° east of Sun γ 245 247 (evening sky) at 21h UT. Mag. –0.5. 1 US 7 PUPPIS AN17 First Quarter Moon at 20:30 UT. T he So uth e α M104 ID L217 Moon near the Pleiades (evening sky) at 22h UT. 313 ER HE PA 25 2 CORV y. 47 AX IC18 Moon very near Jupiter (evening sky) at 12h UT. il k y W a 23 pus rn Cr o s AP IS T 91 RN θ CA Cano OTTOM Occultation visible in southern Australia. Mag. –2.4. Spica RI a US NA Diphd FO the M18 Moon near Aldebaran (evening sky) at 20h UT. s ( Cru HE M 31 2516 OF TH 14 32 R19 Moon at apogee (farthest from Earth) at 6h UT la x y, OF T x) is 93 280 E MA 8 253 (distance 404,472 km; angular size 29.5). 35 3 2070 LM C r ga 32 372 TE R in t RH P IS 39 IC o ou CE N23 Moon near Beehive cluster (M44) (evening sky) at yd h e s A ME A 26 18 02 THE ar es t o ut CR HE 13h UT. rn M8 UX he S. T S h-e a xi Ac Ac 3 Co rux MUSCA25 Moon near Regulus (midnight sky) at 6h UT. als ζ IME g al a st 47 51 ack 55 IX 28 ω e r n DI R E NA DT ST ion OR SMC EN Ce25 Full Moon at 20:28 UT. CA n TU β O HE AN an PT s ky PH mp UL SCP The Zodiacal Light is caused by sunlight reflected off uc .I ES CE 47 T RT e c o t w N TH AT SC NT βC Symbols CT ND meteoric dust in the plane of the solar system. Choose a clear, en i ll AU ar IO cli T YO AI RU C) moonless night, about 1–2 hours after sunset, and look for a mb Galaxy SM S αC CE en A TRIAN hi & large triangular- shaped glow extending up from the horizon (along G ON AUST ULUM gh ACE US Double Star MC W S er RALE 58 GR S (L U the ecliptic). The best months to view the Zodiacal Light is when the E AR 22 S in B F ds he u Variable Star PE t lo EG s ky AP ecliptic is almost vertical at the horizon: March and April (evening) and c C IT . IN in 602 ni Diffuse Nebula October–November (morning); times reversed for the southern hemisphere. BY co 5 e ll a AS US min a g ZO N Planetary Nebula IN gm κ eM RIMore sky events and links at G TH o n t h air Th -HO ES s. PAV O Aln - TO Open Star ClusterAll times in Universal Time (UT). (Australian Eastern Summer Time = UT + 11 hours.) KY ON M AP RI Z Globular Star Cluster TO M HO F I ND Fro ms 6752 F RO SAVE ON RECOMMENDED PRODUCTS • AB outh . SKY RIG ern l le ( S CP) HT Star Magnitudes HT S a t it u SOUTH i al P o NIG -1 0 1 2 3 4 • Star Atlases & Planispheres • Star Charts & Astro Posters TAR d e s, st Celes t T IRE PATT ar s a p p ea r to rotate around the South E EN • Books for Sky Watchers • Telescopes & Binoculars E RN I WS TH Copyright © 2000–2013 Kym Thalassoudis. All Rights Reserved. N THE S AP SHO Help support the production and free distribution of The Evening Sky Map KY. INSTRUCTIONS: THE SKY M * TERMS OF USE: FREE FOR NON-COMMERCIAL EDUCATIONAL USE. ASTRONOMY EDUCATION GROUPS MAY FREELY DISTRIBUTE PRINTED HANDOUTS. FULL DETAILS AT
  • 2. SOUTHERN HEMISPHERE FEBRUARY 2013About the Celestial Objects Easily Seen with the Naked EyeListed on this page are several of the brighter, more interesting celestial objects Sirius CMa The brightest star in the sky. Also known as the "Dog Star". Dist=8.6 ly.visible in the evening sky this month (refer to the monthly sky map). The objects are Procyon CMi Greek name meaning "before the dog" - rises before Sirius (northern latitudes). Dist=11.4 ly. Canopus Car Second brightest star in the sky. 14,000 times more luminous than the Sun. Dist=309 ly.grouped into three categories. Those that can be easily seen with the naked eye (that β Centauri Cen With Alpha Centauri, forms the so-called "Pointers-to-the-Cross". Dist=525, without optical aid), those easily seen with binoculars, and those requiring a α Centauri Cen Nearest bright star to Sun at 4.4 ly. Brilliant double star in a telescope. 80 year period.telescope to be appreciated. Note, all of the objects (except single stars) will Achernar Eri Brightest star in Eridanus, The River. Arabic name meaning "end of river". Dist=140 ly.appear more impressive when viewed through a telescope or very large Castor Gem Multiple star system with 6 components. 3 stars visible in telescope. Dist=52 ly.binoculars. They are grouped in this way to highlight objects that can be seen using Pollux Gem With Castor, the twin sons of Leda in classical mythology. Dist=34 ly. Regulus Leo Brightest star in Leo. A blue-white star with at least 1 companion. Dist=77 ly.the optical equipment that may be available to the star gazer. Rigel Ori The brightest star in Orion. Blue supergiant star with mag 7 companion. Dist=770 ly. Betelgeuse Ori One of the largest red supergiant stars known. Diameter=300 times that of Sun. Dist=430 ly.Tips for Observing the Night Sky Pleiades Hyades Tau Tau The Seven Sisters. Spectacular cluster. Many more stars visible in binoculars. Dist=399 ly. Large V-shaped star cluster. Binoculars reveal many more stars. Dist=152 ly.When observing the night sky, and in particular deep-sky objects such as star clusters, Aldebaran Tau Brightest star in Taurus. It is not associated with the Hyades star cluster. Dist=65 ly.nebulae, and galaxies, it’s always best to observe from a dark location. Avoid direct CELESTIAL OBJECTSlight from street lights and other sources. If possible observe from a dark location Easily Seen with Binocularsaway from the light pollution that surrounds many of today’s large cities. M44 Cnc Praesepe or Beehive Cluster. Visible to the naked eye. Dist=577 ly. You will see more stars after your eyes adapt to the darkness—usually about 10 to M41 CMa First recorded observation by Aristotle in 325 BC as "cloudy spot". Dist=2,300 ly.20 minutes after you go outside. Also, if you need to use a torch to view the sky 2516 Car Spectacular open star cluster of 100 stars spaning 1/2 deg. Dist=1,300 ly. 2808 Car Located 4 deg W of Nu Carinae. Visible to the naked eye on clear, cover the light bulb with red cellophane. This will preserve your dark vision. 3114 Car Stunning open cluster. 30+ stars visible through 7x binoculars. Dist=2,900 ly. Finally, even though the Moon is one of the most stunning objects to view 3293 Car Rich, tightly packed. Surrounded by large, faint nebulosity. Dist=8,500 ly.through a telescope, its light is so bright that it brightens the sky and makes many of IC 2602 Car The "Five of Diamonds". Bright cluster twice diameter of full Moon. Dist=491 ly.the fainter objects very difficult to see. So try to observe the evening sky on 3372 Car Eta Carinae Nebula. Enormous glowing cloud in rich star field. Dist=8,000 ly.moonless nights around either New Moon or Last Quarter. 3532 Car Herschel - "most brilliant cluster". 60+ stars in 7x binoculars. Dist=1,300 ly. ω Centauri Cen Largest and brightest globular star cluster in sky. 1 million stars. Dist=17,000 ly. 4755 Cru Jewel Box. Outstanding star cluster. Many contrasting colours. Dist=7,600 ly.Astronomical Glossary LMC Dor Large Magellanic Cloud. A neighbouring galaxy of the Milky Way. Dist=180,000 ly. M35 Gem Fine open cluster located near foot of the twin Castor. Dist=2,800 ly.Conjunction – An alignment of two celestial bodies such that they present the least γ Leporis Lep Visible with binoculars. Gold & white stars. Mags 3.6 & 6.2. Dist=30 ly. Sep=96.3".angular separation as viewed from Earth. 2232 Mon A large scattered star cluster of 20 stars. Dist=1,300 ly.Constellation – A defined area of the sky containing a star pattern. 2244 Mon Surrounded by the rather faint Rosette Nebula. Dist=5,540 ly. M50 Mon Visible with binoculars. Telescope reveals individual stars. Dist=3,000 ly.Diffuse Nebula – A cloud of gas illuminated by nearby stars. M42 Ori The Great Orion Nebula. Spectacular bright nebula. Best in telescope. Dist=1,300 light years.Double Star – Two stars that appear close to each other in the sky; either linked by L2 Pup Semi-regular variable. Magnitude varies between 2.6 & 6.2 over 140.42 days.gravity so that they orbit each other (binary star) or lying at different distances from M47 Pup Bright star cluster. 15+ stars in 7x binoculars. Dist=1,500 ly. M46 Pup Dist=5,400 ly. Contains planetary NGC 2438 (Mag 11, d=65") - not associated.Earth (optical double). Apparent separation of stars is given in seconds of arc ("). 2451 Pup 30+ stars in binoculars. The brightest star, c Puppis, is red. Dist=850 ly.Ecliptic – The path of the Sun’s center on the celestial sphere as seen from Earth. 2477 Pup Very rich but distant star cluster (4,200 ly). Resembles globular through binoculars. 47 Tucanae Tuc Spectacular object. Telescope will reveal stars. Near edge of SMC. Dist=15,000 ly.Elongation – The angular separation of two celestial bodies. For Mercury and Venus β Tucanae Tuc Complex multiple star. Binoculars show one pair. Telescope required to split primary star.the greatest elongation occurs when they are at their most angular distance from the SMC Tuc Small Magellanic Cloud. Companion galaxy to Milky Way. Requires dark sky. Dist=210,000 ly.Sun as viewed from Earth. 2547 Vel Fine open cluster visible through binoculars. Dist=1,300 ly.Galaxy – A mass of up to several billion stars held together by gravity. IC 2391 Vel Omicron Velorum Cluster. Superb object for binoculars. Dist=450 ly.Globular Star Cluster – A ball-shaped group of several thousand old stars. Telescopic ObjectsLight Year (ly) – The distance a beam of light travels at 300,000 km/sec in one year. M67 Cnc Contains 500+ stars mag 10 & fainter. One of the oldest clusters. Dist=2,350 ly.Magnitude – The brightness of a celestial object as it appears in the sky. 3918 Cen The Blue Planetary. Visible in a small telescope as a round blue disk. 2070 Dor Tarantula Nebula. A bright nebula located in LMC. A star-forming region.Open Star Cluster – A group of tens or hundreds of relatively young stars. θ Eridani Eri Striking blue-white double star. Mags 3.2 & 4.3. Visible in a small telescope. Sep=8.2".Opposition – When a celestial body is opposite the Sun in the sky. 3242 Hya Ghost of Jupiter. Bright blue disk. Mag 11 central star. Dist=2,600 ly. β Monocerotis Mon Triple star. Mags 4.6, 5.0 & 5.4. Requires telescope to view arc-shape. Sep=7.3".Planetary Nebula – The remnants of a shell of gas blown off by a star. 2264 Mon Christmas Tree Cluster. Associated with the Cone Nebula. Dist=2,450 ly.Universal Time (UT) – A time system used by astronomers. Also known as Greenwich σ Orionis Ori Superb multiple star. 2 mag 7 stars one side, mag 9 star on other. Struve 761 triple in field.Mean Time. Australian Eastern Standard Time (Sydney, Australia) is UT plus 10 hours. k Puppis Pup Telescope easily shows two blue-white stars of almost equal brightness. Sep=9.9". M1 Tau Crab Nebula. Remnant from supernova which was visible in 1054. Dist=6,500 ly.Variable Star – A star that changes brightness over a period of time. 3132 Vel One of the brightest planetaries. Magnitude 10 central star. Dist=2,600 ly. The Evening Sky Map (ISSN 1839-7735) Copyright © 2000–2013 Kym Thalassoudis. All Rights Reserved.