DOCSLIB.ORG

Anuario Del Observatorio Astronómico Nacional

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Anuario Del Observatorio Astronómico Nacional ANUARIO DEL OBSERVATORIO ASTRONÓMICO NACIONAL Edición CXXXIX 2020 INSTITUTO DE ASTRONOMÍA UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO DR 2020, Universidad Nacional Autónoma de México Ciudad Universitaria, 04510. Ciudad de México. Instituto de Astronomía Impreso y hecho en México Índice Efemérides astronómicas 2020 ÍNDICE ..................................................3 PREFACIO ..................................................5 CALENDARIO Día Juliano ..................................................7 Eras, ciclos cronológicos y cómputo .....................................9 Fiestas y aniversarios ..............................................10 Estaciones del año .................................................11 HORA SIDERAL Hora sideral .................................................12 SOL, LUNA Y PLANETAS Sol .................................................15 Luna .................................................23 Mercurio .................................................31 Venus .................................................39 Marte .................................................47 Júpiter .................................................55 Saturno .................................................63 Urano .................................................71 Neptuno .................................................79 Plutón (Planeta enano) .............................................87 Satélites de los planetas ............................................95 Parámetros orbitales y físicos ........................................97 Sistema de constantes y parámetros ...................................98 ESTRELLAS Nomenclatura de estrellas brillantes ..................................101 Nombre de estrellas (Catálogo Hiparco) ................................ 105 Posiciones medias de estrellas brillantes ...............................129 Posiciones aparentes de estrellas brillantes .............................157 Posiciones aparentes de la estrella Polar ...............................189 Astronómico Nacional UNAM Instituto de Astronomía 4 CONSTELACIONES Nombres y significados ............................................193 Diagrama de constelaciones .........................................195 OBJETOS MESSIER Objetos brillantes ................................................196 EVENTOS ASTRONÓMICOS Lluvias de estrellas ...............................................198 Eventos planetarios ...............................................199 Fases de la Luna ................................................201 Crepúsculos, salidas y puestas de sol .................................202 Eclipses de sol y luna .............................................205 POBLACIONES DE LA REPÚBLICA MEXICANA Poblaciones de la República Mexicana .................................207 HORA LEGAL EN LA REPÚBLICA MEXICANA Zonas horarias ................................................225 Mapa de zonas horarias ............................................226 Hora legal ................................................228 CENTROS ASTRONÓMICOS EN LA REPÚBLICA MEXICANA Observatorios ................................................229 REFRACCIÓN Refracción ................................................230 Corrección por distancia cenital ......................................231 Corrección por temperatura .........................................232 Corrección por presión ............................................233 ABREVIATURAS ................................................234 GLOSARIO Términos astronómicos básicos ......................................235 APÉNDICE Explicaciones ................................................241 MAPA DE ESTRELLAS PARA EL AÑO 2020 Instituto de Astronomía UNAM Anuario del Observatorio 5 Prefacio, 2020 En el Anuario del Observatorio Astronómico Nacional se publican efemérides astronómicas del Sol, la Luna, planetas y estrellas, sucesos astronómicos como eclipses, ocultaciones y conjunciones; datos astronómicos generales, así como paráme- tros geométricos y físicos de los planetas y sus satélites. Para el cálculo de las efemérides y los instantes en que ocurren los sucesos astronómicos, se toma el meridiano efe- mérico 90º al oeste del meridiano efemérico de Greenwich, y la di- ferencia entre el tiempo de las efemérides y el Universal se estima en ΔT= 69.0s. Los instantes para los fenómenos astronómicos y las horas del paso por el meridiano 90° W.G., deberán corregirse por el horario de verano que corresponda al lugar geográfico y la época del año. De acuerdo al Decreto Presidencial sobre Husos Horarios (Ver Hora legal en la República mexicana). Todos los cálculos de las efemérides astronómi- cas son referidos al Ecuador y Eclíptica de la época J2000.0, de acuerdo a las resoluciones tomadas por la Unión Astronómica In- ternacional (UAI) en 1976. Nuestros cálculos se fundamentan en los parámetros astronómicos y elementos orbitales medios, utili- zados para otros anuarios astronómicos, como: Astronomical Al- manac, EUA, National Almanac of Royal Greenwich Observatory, Inglaterra, Jet Propulsion Laboratory, EUA y Service des Calculs Bureau des Longitudes, Francia. En esta edición, los cálculos son referidos a los fun- damentos recomendados por la Unión Astronómica Internacional (2000) para la precesión y nutación, los sistemas de referencia celeste intermedio y el ángulo de rotación de la Tierra CIP, CIO, ICRS, CIRS. La relación entre los orígenes se da a partir de la lon- gitud cero del origen intermedio terrestre y el origen de equinoc- cio verdadero y del origen del intermedio celeste (CIO), los cuales difieren por el ángulo de rotación de la Tierra (ERA). El ecuador verdadero y el intermedio son coplanares, cuyo polo es el inter- medio celeste (CIP) De acuerdo a las recomendaciones del grupo Working Group on Nomenclature for Fundamental Astronomy de la IAU, las efemérides para los planetas, el Sol y la Luna, se obtuvieron en función de la efemérides JPL Planetary and Lunar Epheme- ris DE431/LE431. Para las estrellas se tomaron de los parámetros astronómicos del catálogo The Hipparcos and Tycho Catalog, ESA Hipparcos Space Astrometry Mission, apartir del cual se determi- naron las posiciones medias de estrellas y posiciones aparentes de estrellas brillantes. Astronómico Nacional UNAM Instituto de Astronomía 6 Para el cálculo de las declinaciones magnéticas se utilizó la décima generación del modelo del campo magnético te- rrestre adoptado por la “International Association of Geomagnetic and Aeronomy”. Los cálculos corresponden a las determinaciones, teóricas y observadas, para la República Mexicana del Departa- mento de Geomagnetismo y Exploración del Instituto de Geofísica de la Universidad Nacional Autónoma de México. Se incluye un mapa de estrellas referidas al año 2019. En el apartado de nomenclatura de estrellas se incluyen los nom- bre comunes de estrellas a demás de los número de los catálogos Hipparco (NH) y los números asigandos en el Bright Star Catalog de la Universidad de Yale (NBSC). En la tabla de posiciones medias se presentan las coordenadas ascensión recta en unidades (h, m, s), y declinación (º, ‘, “), y en decimales de grado (º). Debemos señalar que en el futuro próximo las tablas de efemérides se darán en decimales de grado. Todos los cálculos se efectuaron en los sistemas de cómputo del departamento de Astrofísica Computacional del Ins- tituto de Astronomía, de la Universidad Nacional Autónoma de México. c. Dr. J. Daniel Flores Gutiérrez Departamento de Efemérides Instituto de Astronomía Universidad Nacional Autónoma de México Ciudad Universitaria Apartado postal 70-264 México, D.F., 04510 Instituto de Astronomía UNAM Anuario del Observatorio 7 Día Juliano, 2020 A las 0h del meridiano 90º W.G. d ds dj d ds dj d ds dj d ds dj Enero 21 vie 2458900.75 11 sab 2458950.75 Junio 1 mie 2458849.75 22 sab 2458901.75 12 dom 2458951.75 1 lun 2459001.75 2 jue 2458850.75 23 dom 2458902.75 13 lun 2458952.75 2 mar 2459002.75 3 vie 2458851.75 24 lun 2458903.75 14 mar 2458953.75 3 mie 2459003.75 4 sab 2458852.75 25 mar 2458904.75 15 mie 2458954.75 4 jue 2459004.75 5 dom 2458853.75 26 mie 2458905.75 16 jue 2458955.75 5 vie 2459005.75 6 lun 2458854.75 27 jue 2458906.75 17 vie 2458956.75 6 sab 2459006.75 7 mar 2458855.75 28 vie 2458907.75 18 sab 2458957.75 7 dom 2459007.75 8 mie 2458856.75 29 sab 2458908.75 19 dom 2458958.75 8 lun 2459008.75 9 jue 2458857.75 20 lun 2458959.75 9 mar 2459009.75 10 vie 2458858.75 Marzo 21 mar 2458960.75 10 mie 2459010.75 1 dom 2458909.75 11 sab 2458859.75 22 mie 2458961.75 11 jue 2459011.75 2 lun 2458910.75 12 dom 2458860.75 23 jue 2458962.75 12 vie 2459012.75 3 mar 2458911.75 13 lun 2458861.75 24 vie 2458963.75 13 sab 2459013.75 4 mie 2458912.75 14 mar 2458862.75 25 sab 2458964.75 14 dom 2459014.75 5 jue 2458913.75 15 mie 2458863.75 26 dom 2458965.75 15 lun 2459015.75 6 vie 2458914.75 16 jue 2458864.75 27 lun 2458966.75 16 mar 2459016.75 7 sab 2458915.75 17 vie 2458865.75 28 mar 2458967.75 17 mie 2459017.75 8 dom 2458916.75 18 sab 2458866.75 29 mie 2458968.75 18 jue 2459018.75 9 lun 2458917.75 19 dom 2458867.75 30 jue 2458969.75 19 vie 2459019.75 10 mar 2458918.75 20 lun 2458868.75 20 sab 2459020.75 11 mie 2458919.75 21 mar 2458869.75 Mayo 21 dom 2459021.75 12 jue 2458920.75 1 vie 2458970.75 22 mie 2458870.75 22 lun 2459022.75 13 vie 2458921.75 2 sab 2458971.75 23 jue 2458871.75 23 mar 2459023.75 14 sab 2458922.75 3 dom 2458972.75 24 vie 2458872.75 24 mie 2459024.75 15 dom 2458923.75 4 lun 2458973.75 25 sab 2458873.75 25 jue 2459025.75 16 lun 2458924.75 5 mar 2458974.75
Load more

Recommended publications
  • Central Coast Astronomy Virtual Star Party May 15Th 7Pm Pacific
    Central Coast Astronomy Virtual Star Party May 15th 7pm Pacific Welcome to our Virtual Star Gazing session! We’ll be focusing on objects you can see with binoculars or a small telescope, so after our session, you can simply walk outside, look up, and understand what you’re looking at. CCAS President Aurora Lipper and astronomer Kent Wallace will bring you a virtual “tour of the night sky” where you can discover, learn, and ask questions as we go along! All you need is an internet connection. You can use an iPad, laptop, computer or cell phone. When 7pm on Saturday night rolls around, click the link on our website to join our class. CentralCoastAstronomy.org/stargaze Before our session starts: Step 1: Download your free map of the night sky: SkyMaps.com They have it available for Northern and Southern hemispheres. Step 2: Print out this document and use it to take notes during our time on Saturday. This document highlights the objects we will focus on in our session together. Celestial Objects: Moon: The moon 4 days after new, which is excellent for star gazing! *Image credit: all astrophotography images are courtesy of NASA & ESO unless otherwise noted. All planetarium images are courtesy of Stellarium. Central Coast Astronomy CentralCoastAstronomy.org Page 1 Main Focus for the Session: 1. Canes Venatici (The Hunting Dogs) 2. Boötes (the Herdsman) 3. Coma Berenices (Hair of Berenice) 4. Virgo (the Virgin) Central Coast Astronomy CentralCoastAstronomy.org Page 2 Canes Venatici (the Hunting Dogs) Canes Venatici, The Hunting Dogs, a modern constellation created by Polish astronomer Johannes Hevelius in 1687.
    [Show full text]
  • Naming the Extrasolar Planets
    Naming the extrasolar planets W. Lyra Max Planck Institute for Astronomy, K¨onigstuhl 17, 69177, Heidelberg, Germany [email protected] Abstract and OGLE-TR-182 b, which does not help educators convey the message that these planets are quite similar to Jupiter. Extrasolar planets are not named and are referred to only In stark contrast, the sentence“planet Apollo is a gas giant by their assigned scientific designation. The reason given like Jupiter” is heavily - yet invisibly - coated with Coper- by the IAU to not name the planets is that it is consid- nicanism. ered impractical as planets are expected to be common. I One reason given by the IAU for not considering naming advance some reasons as to why this logic is flawed, and sug- the extrasolar planets is that it is a task deemed impractical. gest names for the 403 extrasolar planet candidates known One source is quoted as having said “if planets are found to as of Oct 2009. The names follow a scheme of association occur very frequently in the Universe, a system of individual with the constellation that the host star pertains to, and names for planets might well rapidly be found equally im- therefore are mostly drawn from Roman-Greek mythology. practicable as it is for stars, as planet discoveries progress.” Other mythologies may also be used given that a suitable 1. This leads to a second argument. It is indeed impractical association is established. to name all stars. But some stars are named nonetheless. In fact, all other classes of astronomical bodies are named.
    [Show full text]
  • Asterion and Chara – the Confusion of the Chase
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Faculty Publications, UNL Libraries Libraries at University of Nebraska-Lincoln July 2002 Asterion and Chara – the Confusion of the Chase Charles D. Bernholz University of Nebraska-Lincoln, [email protected] Michael J. Lyons Follow this and additional works at: https://digitalcommons.unl.edu/libraryscience Part of the Library and Information Science Commons Bernholz, Charles D. and Lyons, Michael J., "Asterion and Chara – the Confusion of the Chase" (2002). Faculty Publications, UNL Libraries. 7. https://digitalcommons.unl.edu/libraryscience/7 This Article is brought to you for free and open access by the Libraries at University of Nebraska-Lincoln at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Faculty Publications, UNL Libraries by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. SPECIAL FEATURE: DEVELOPING IDEAS OF SPACE www.iop.org/journals/physed Asterion and Chara—the confusion of the chase Charles D Bernholz1 and Michael J Lyons2 1 Memorial Library, State University of New York College at Cortland, Cortland, NY 13045, USA 2 Port Jervis High School, Port Jervis, NY 12771, USA E-mail: [email protected] Abstract The study of astronomy, as an important part of any science education programme, provides our students with insights into more than just the cosmos. It may also serve as a mechanism to link them to other natural and social sciences. This article examines equally valid interpretations of the constellation Canes Venatici as an example of how the study of astronomy may serve this multidisciplinary educational role. In addition, it is an extension of the thoughts of Stannard (2001) on communicating physics through story.
    [Show full text]
  • What's in This Issue?
    A JPL Image of surface of Mars, and JPL Ingenuity Helicioptor illustration. July 11th at 4:00 PM, a family barbeque at HRPO!!! This is in lieu of our regular monthly meeting.) (Monthly meetings are on 2nd Mondays at Highland Road Park Observatory) This is a pot-luck. Club will provide briskett and beverages, others will contribute as the spirit moves. What's In This Issue? President’s Message Member Meeting Minutes Business Meeting Minutes Outreach Report Asteroid and Comet News Light Pollution Committee Report Globe at Night SubReddit and Discord BRAS Member Astrophotos ARTICLE: Astrophotography with your Smart Phone Observing Notes: Canes Venatici – The Hunting Dogs Like this newsletter? See PAST ISSUES online back to 2009 Visit us on Facebook – Baton Rouge Astronomical Society BRAS YouTube Channel Baton Rouge Astronomical Society Newsletter, Night Visions Page 2 of 23 July 2021 President’s Message Hey everybody, happy fourth of July. I hope ya’ll’ve remembered your favorite coping mechanism for dealing with the long hot summers we have down here in the bayou state, or, at the very least, are making peace with the short nights that keep us from enjoying both a good night’s sleep and a productive observing/imaging session (as if we ever could get a long enough break from the rain for that to happen anyway). At any rate, we figured now would be as good a time as any to get the gang back together for a good old fashioned potluck style barbecue: to that end, we’ve moved the July meeting to the Sunday, 11 July at 4PM at HRPO.
    [Show full text]
  • 515 Ultraviolet Observations of Weak-Helium Stars P. L
    515 ULTRAVIOLET OBSERVATIONS OF WEAK-HELIUM STARS P. L. Bernacca* National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland Michael R. Molnar Laboratory for Atmospheric and Space Physics Boulder, Colorado ABSTRACT Ultraviolet filter photometry with the Wisconsin experiment package aboard OAO-2 has been carried out for the weak-helium stars 3 Cen A, 3 Sco, HD 144334, HD 21699, HD 144844, a Scl, HR 8535, HR 8770 and HD 144661. The flux distribution is compared with that of B3 to B8 main sequence and giant stars in terms of color-color diagrams. When allowance is made for line blocking short- ward of 2800 A due to lines of P II, Ga II, Si II, Si III, Ti II and Sr II we find that most of the weak-helium stars have normal fluxes in good agree- ment with their ground-based colors. It is diffi- cult to consider HR 8535, HR 8770 and HD 144661 as having a normal flux distribution and the sugges- tion is made they may be brighter than normal at 3320 A. The star a Scl is a light and spectrum variable. The strengthening of Ti II and Sr II lines around 2400 A appears to redistribute flux longward of the Balmer discontinuity. The flux distribution indi- cates an effective temperature about 1500°K higher than previously determined which would increase the apparent helium underabundance. *ESRO Fellow 1971 on leave from Asiago Observatory, Italy 516 SCIENTIFIC RESULTS OF OAO-2 I. INTRODUCTION Reporting observations in the unknown ultraviolet region for a number of the little understood weak-helium stars of Population I is per se of interest.
    [Show full text]
  • JUNE SKIES (CONTINUED from PAGE 1) Is 25 Times the Diameter of the Sun, and Is an Or Ange Star of Spectral Type K2
    THE DENVER OBSERVER JUNE 2011 Theh e Denverv e r JUNE 2011 DIAMONDS ON VELVET Calendar How does one ‘top’ the galaxy parade of Leo and Virgo? By coming home to the beautiful globular 1.......................................... New moon clusters in our own Milky Way. Messier 13, in Hercules, is truly a sight, even in modest instruments. Located at the northwestern edge of the Champion’s “keystone” asterism, this swarm of 300,000 lu- 8............................. First quarter moon minous stellar bees is one of ~160 that inhabit the outer halo of our island universe. Just a celestial stone’s-throw from Earth, M13’s light travels 25,000 light years to reach us. Details: Honis-modified 15......................................... Full moon Canon 450 D, C-11 working at f/6.3, data totaling 17 minutes, EGK dark site at Deer Trail. Image © Darrell Dodge 23............................ Last quarter moon Inside the SKIES Observer JUNE by Dennis Cochran ant of Spring: Partial eclipses are occurring spends years training just to become a grant proposal Presidents Corner.......................... 2 Rapace this year, but at the poles. Meanwhile the writer. Because of time lost to this activity, it takes penultimate shuttle is still trying to launch as of mobs of Ph.Ds to do the research. The lonely Hub Society Directory............................ 2 this writing 4/30. Shuttle reentry tiles are being ble at his telescope, living off a professors salary, is a Schedule of Events.......................... 2 given, or maybe sold, to interested parties. The thing of the past Milton Humason eventually joined money for Americas vanishing space program is in Hubble.
    [Show full text]
  • The Ages of Early-Type Stars: Strömgren Photometric Methods
    Draft version April 9, 2015 Preprint typeset using LATEX style emulateapj v. 5/2/11 THE AGES OF EARLY-TYPE STARS: STROMGREN¨ PHOTOMETRIC METHODS CALIBRATED, VALIDATED, TESTED, AND APPLIED TO HOSTS AND PROSPECTIVE HOSTS OF DIRECTLY IMAGED EXOPLANETS Trevor J. David1,2 and Lynne A. Hillenbrand1 1Department of Astronomy; MC 249-17; California Institute of Technology; Pasadena, CA 91125, USA; tjd,[email protected] Draft version April 9, 2015 ABSTRACT Age determination is undertaken for nearby early-type (BAF) stars, which constitute attractive targets for high-contrast debris disk and planet imaging surveys. Our analysis sequence consists of: acquisition of uvbyβ photometry from catalogs, correction for the effects of extinction, interpolation of the photometry onto model atmosphere grids from which atmospheric parameters are determined, and finally, comparison to the theoretical isochrones from pre-main sequence through post-main sequence stellar evolution models, accounting for the effects of stellar rotation. We calibrate and validate our methods at the atmospheric parameter stage by comparing our results to fundamentally determined Teff and log g values. We validate and test our methods at the evolutionary model stage by comparing our results on ages to the accepted ages of several benchmark open clusters (IC 2602, α Persei, Pleiades, Hyades). Finally, we apply our methods to estimate stellar ages for 3493 field stars, including several with directly imaged exoplanet candidates. Subject headings: stars: early-type |evolution |fundamental parameters |Hertzsprung-Russell and C-M diagrams |planetary systems |astronomical databases: catalogs 1. INTRODUCTION planet formation efficiency to stellar mass. The claim is In contrast to other fundamental stellar parameters that while 14% of A stars have one or more > 1MJupiter companions∼ at <5 AU, only 2% of M stars do (Johnson such as mass, radius, and angular momentum { that for ∼ certain well-studied stars and stellar systems can be an- et al.
    [Show full text]
  • TAAS Fabulous Fifty
    TAAS Fabulous Fifty Friday April 21, 2017 19:30 MDT (7:30 pm) Ursa Major Photo Courtesy of Naoyuki Kurita All TAAS and other new and not so new astronomers are invited Evening Events 7:30 pm Meet inside church for overview of winter sky 8:30 pm View night sky outside 9:00 pm Social session inside church 10:00 pm Optional additional viewing outside Objectives Provide new astronomers a list of 50 night sky objects 1. Locate with the naked eye 2. Showcases the night sky for an entire year 3. Beginner astronomer will remember from one observing session to the next 4. Basis for knowing the night sky well enough to perform more detailed observing Methodology 1. Divide the observing activities into the four seasons: Winter Dec-Jan-Feb Spring Mar-Apr-May Summer Jun-Jul-Aug Fall Sep-Oct-Nov Boötes Photo Courtesy of Naoyuki Kurita 2. Begin with the bright and easy to locate and identify stars and associated constellations 3. Add the other constellations for each season Methodology (cont.) 4. Add a few naked eye Messier Objects 5. Include planets as a separate observing activity M 44 “The Beehive” Photo Courtesy of Naoyuki Kurita 6. Include the Moon as a separate observing activity 7. Include meteor showers as separate observing activity Spring Constellations Stars Messier Object Ursa Major Dubhe Merak Leo Regulus M 44 “The Beehive” Boötes Arcturus M 3 The Spring Sky Map Ursa Major Boötes Leo What Are the Messier Objects (M)? 100 astronomical objects listed by French astronomer Charles Messier in 1771 Messier was a comet hunter, and frustrated by
    [Show full text]
  • Some Targets for the LAAS Public Star Party on Saturday, April 20, 2013 Sunset at 7:29 P.M
    Some Targets for the LAAS Public Star Party on Saturday, April 20, 2013 Sunset at 7:29 p.m. PDT At 8:00 p.m. PDT the Sidereal Time (Right Ascension at the Meridian) is 10 hours 04.37 minutes SHOWCASE OBJECTS The Moon 10 days old (1 st Quarter was on April 18); in Leo (southeast of Regulus) Prominent features near the terminator: Rainbow Bay in the North, large crater Copernicus near the middle, craters Tycho and Bullialdus (both with prominent central peaks) in the South Jupiter and its Galilean Moons Low in the Western sky (will be setting at 10:58 p.m. PDT) Io and Callisto in the East, Europa in the West, Ganymede transiting Jupiter from 8:05 to 10:34 p.m. PDT Orion Nebula (M42) and the Trapezium Saturn rises at 7:55 p.m. PDT, may be high enough above the horizon for viewing before the session ends MULTIPLE STARS (SAO Numbers are included for use by computerized go-to mounts) Prominent white doubles: Castor (in Gemini; SAO # 060198; 07:34.6 +31:53) Mizar (in Ursa Major; SAO # 028737; 13:23.9 +54: 56) Porrima (in Virgo; SAO # 138917; 12:41.7 -01:27; a pair of 3½ magnitude stars now only 1.55 arcseconds apart) Prominent doubles of various colors: 145 Canis Majoris (orange & blue; in Canis Major; h3945; SAO # 173349; 07:16.6 -23:19) Algieba (Gamma Leo; gold & gold; in Leo; SAO # 081298; 10:20.0 +19:50) Iota Cancri (gold & blue; in Cancer; SAO # 080416; 08:46.7 +28:46) Cor Caroli (Alpha CVn, yellow & blue-grey, in Canes Venatici, SAO # 063257,12:56.0 + 38:19) Izar (Epsilon Boo, yellow & blue, magnitude differential challenge in Boötes,
    [Show full text]
  • Some Targets for the LAAS Public Star Party on Saturday, June 15, 2013 Sunset at 8:07 P.M
    Some Targets for the LAAS Public Star Party on Saturday, June 15, 2013 Sunset at 8:07 p.m. PDT At 9:00 p.m. PDT the Sidereal Time (Right Ascension at the Meridian) is 13 hours 45.15 minutes SHOWCASE OBJECTS The Moon 6½ days old (1st Quarter is at 10:24 a.m. PDT on June 16); in Leo SE of Regulus & SW of Denebola. Prominent features near the terminator: the Alpine Valley and craters Aristoteles & Eudoxus in the North; crater Triesnecker and the lunar “V” formation near the middle; and complex crater Stöfler in the South. Saturn In Virgo, E of Spica; Its giant moon, Titan, is about 4 Saturn diameters directly north of the planet at 9:00 p.m. PDT. MULTIPLE STARS (SAO Numbers are included for use by computerized go-to mounts) Prominent white doubles: Mizar (Zeta (ζ) Uma; in Ursa Major; SAO # 028737; 13:23.9 +54:56) Struve 1962 (in Libra; SAO # 140671; 15:38.7 -08:48) Graffias (Beta (ß) Sco; in Scorpius; SAO # 159682; 16:05.4 -19:48) Rho (ρ) Her (in Hercules, SAO # 066000; 17:23.7 +37:09) 95 Her (in Hercules, SAO # 085647; 18:01.5 +21:36) Epsilon (ε) 1 & 2 Lyr (the “double-double”; in Lyra, SAO # 067309; 18:44.3 +39:40) Prominent doubles of various colors: Cor Caroli (Alpha (α) CVn; yellow & blue-grey; in Canes Venatici, SAO # 063257; 12:56.0 +38:19) Izar (Epsilon (ε) Boo; yellow & blue, magnitude differential challenge; in Boötes; SAO # 083500; 14:45.0 +27:04) Delta (δ) Ser (yellow & blue; in Serpens Caput; SAO # 101623; 15:34.8 +10:32) Rasalgethi (Alpha (α) Her, orange & blue-grey; in Hercules; SAO # 102680; 17:14.6 +14:23) Triple Stars Nu
    [Show full text]
  • Astronomy Targets: June 2019 Unless Stated Otherwise, All Times Are for Mid-Month, for Birmingham UK and Are BST
    Astronomy targets: June 2019 Unless stated otherwise, all times are for mid-month, for Birmingham UK and are BST. Rise & set times are for 20 degrees above horizon. Dark & light times are nautical twilight times (Sun 12 degrees below horizon) and astronomical darkness (Sun 18 degrees below horizon). © Andrew Butler, 2019. Sun and Moon data sourced from US Naval Observatory. Sun & Moon times Monday date Sunset Naut Astro Astro Naut Sunrise Moon Dark Dark Light Light 03/06/19 2122 2325 0246 0449 0% 10/06/19 2129 2338 0236 0445 59% 17/06/19 2133 2346 0232 0444 100% 24/06/19 2135 2347 0233 0446 54% Calendar 2 Jun New Moon 16 Jun Full Moon Planets Cygnus all night Jupiter: Low all night (at opposition) Emission nebulae: Saturn: Low at Sunrise NGC6888 Crescent Nebula NGC6960 Veil Nebula Boötes Sunset-0220 IC5070 Pelican Nebula Multiple star: ξ-Boo (xi-Boo) yellow & orange IC7000 (C20) North American Nebula Planetary nebulae: Camelopardalis all night IC5146 (C19) Cocoon Nebula Galaxy: NGC2403 (C7) NGC6826 Blinking Nebula Asterism: Kemble’s Cascade & NGC1502 cluster NGC7008 Fetus Nebula Open clusters: Canes Venatici all night M29 Globular cluster: M3 M39 Galaxies: NGC6871 M51 Whirlpool Galaxy NGC6883 M63 Sunflower Galaxy NGC6910 Rocking Horse Cluster M94 Galaxy: NGC6946 (C12) Fireworks Galaxy M106 Multiple stars: NGC4631 Whale Galaxy Albireo β-Cyg (beta-Cyg) gold & blue Coloured star: La Superba Y-CVn carbon star 61-Cyg orange & red Multiple star: Cor Caroli α-CVn (alpha-CVn) yellow & orange Delphinus all night Cassiopeia all night Globular clusters:
    [Show full text]
  • Lists and Charts of Autostar Named Stars
    APPENDIX A Lists and Charts of Autostar Named Stars Table A.I provides a list of named stars that are stored in the Autostar database. Following the list, there are constellation charts which show where the stars are located. The names are in alphabetical orderalong with their Latin designation (see Appendix B for complete list ofconstellations). Names in brackets 0 in the table denote a different spelling to one that is known in the list. The star's co-ordinates are set to the same as accuracy as the Autostar co-ordinates i.e. the RA or Dec 'sec' values are omitted. Autostar option: Select Item: Object --+ Star --+ Named 215 216 Appendix A Table A.1. Autostar Named Star List RA Dec Named Star Fig. Ref. latin Designation Hr Min Deg Min Mag Acamar A5 Theta Eridanus 2 58 .2 - 40 18 3.2 Achernar A5 Alpha Eridanus 1 37.6 - 57 14 0.4 Acrux A4 Alpha Crucis 12 26.5 - 63 05 1.3 Adara A2 EpsilonCanis Majoris 6 58.6 - 28 58 1.5 Albireo A4 BetaCygni 19 30.6 ++27 57 3.0 Alcor Al0 80 Ursae Majoris 13 25.2 + 54 59 4.0 Alcyone A9 EtaTauri 3 47.4 + 24 06 2.8 Aldebaran A9 Alpha Tauri 4 35.8 + 16 30 0.8 Alderamin A3 Alpha Cephei 21 18.5 + 62 35 2.4 Algenib A7 Gamma Pegasi 0 13.2 + 15 11 2.8 Algieba (Algeiba) A6 Gamma leonis 10 19.9 + 19 50 2.6 Algol A8 Beta Persei 3 8.1 + 40 57 2.1 Alhena A5 Gamma Geminorum 6 37.6 + 16 23 1.9 Alioth Al0 EpsilonUrsae Majoris 12 54.0 + 55 57 1.7 Alkaid Al0 Eta Ursae Majoris 13 47.5 + 49 18 1.8 Almaak (Almach) Al Gamma Andromedae 2 3.8 + 42 19 2.2 Alnair A6 Alpha Gruis 22 8.2 - 46 57 1.7 Alnath (Elnath) A9 BetaTauri 5 26.2
    [Show full text]