... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Risks Comparable to NEOs . ... The Increasing Rate of Discovery of Asteroids . ... Comet and Asteroid Collision Probabilities . ... Extreme albedo comets and the impact hazard (PDF Format) . ... Asteroid Impact Animations . ... Workshop on Scientific Requirements for Mitigation of Hazardous Comets and Asteroids - 2002 . ... The Spaceguard Survey Report, 1992 (PDF) . Tsunami from Asteroid/Comet Impacts . ...

Astronomy Picture of the Day . The Cat's Eye Nebula (Revisited) . ... 4.07.1996 . ... Credit Copyright: J.P. Harrington and K.J. Borkowski ( U. Maryland ), HST , NASA Explanation: Three thousand light years away, a dying star throws off shells of glowing gas. This image from the Hubble Space Telescope reveals "The Cat's Eye Nebula" to be one of the most complex planetary nebulae known. ... APOD News: Policy on Re-Running Pictures . ... July 1996 . ... U. Based on Astronomy Picture Of the Day ...

... 2000 August 30 . The Brown Dwarfs of Orion's Trapezium . ... NICMOS IDT , NASA . ... Explanation: The bright stars above are well known as heart of the Trapezium , an open cluster of stars in the center of the Orion Nebula . ... Although many more brown dwarfs than hot stars have now been found in Orion, their very low masses make them inadequate to compose much of the dark matter expected in galaxies and the Universe . ... About APOD | ... NASA Technical Rep.: ...

... Space Flight . ... Continue Reading.. ... No Comments The Department of Culture, Arts and LeisureтАЩs тАЬCreativity MonthтАЭ is an annual celebration which takes place each March.€а It inspires creative and collaboration amongst many industries from theatre to astronomy!€а€а [ ] . ... No Comments Once again, astronomers around the world are investigating a stellar explosion, a supernova, in M82, a galaxy 12 million light years away in the constellation Ursa Major. ... Posted on September 25, 2013 | ...

... Since the reddening found for the stars in Table 13 was small, no reddening correction was attempted. ... These diamonds indicate the positions of very low mass, 3 Myr old, objects from the work of Burrows et al. ... This optical V versus R - I scheme is a very powerful method of detecting very low mass (VLM) objects. ... Because of this, young brown dwarfs are intrinsically no more difficult to observe in the optical than low mass stars at the age of Orionis. ...

... Radiation mechanisms of astrophysical objects: classics today . ... 18 March, 2015 - Registration opens . 2 April, 2015 - Abstract submission opens . 15 August, 2015 - Registration and abstract submission deadline . 27 August, 2015 - Programme available . 21 September, 2015 - Conference opens . 25 September, 2015 - Conference closes . ... Key dates . ... Conference program . Conference poster . Conference venue . Conference proceedings . ...

... The He+Ne+Ar spectral lamp used for comparison spectrum since August 1996. ... spectral resolution 3A) 3850-5400AA , 5400-6900AA , 6900-8400AA ; . spectral resolution 5-6A) 3850-6400AA , 6400-8800AA , 8700-10000AA & 4100-6100AA (resolution 12-15A) . The AL+Ne+Xe+Ar spectral lamp used for comparison spectrum before August 1996. ... spectral resolution 18A) 3400-6700AA ; . spectral resolution 4.5A) 6200-7100AA ; . ... Back to Laboratory Home Page . ...

... 2004: . ... An increase in star brightness is followed by a decrease in asphericity and wind velocity to the point where stationary and even accreting fraction of the wind appears in extremely bright objects together with a flowing out fraction. ... Based on an analysis of observations obtained with BTA and on the published data it was found that degree of abnormality of energy distribution in continuum of magnetic chemically peculiar stars increases with an increase of their rotation period. ...

Next: ZGSC (Compressed GSC) and XSKYMAP . ... This is a preliminary report on an investigation of the quality and properties of plates digitized during creation of the Guide Star Catalog (GSC). The results will be vital for reclassifying GSC objects. ... Many objects are measured on more than one plate, and thus have multiple catalog entries. ... Among the shortcomings of the GSC are: biased magnitudes and incorrect classifications for certain objects, presence of artifact objects. ...

... A rough estimation is that in the United States there is one planetarium per 100,000 population, ranging in size from the Hayden Planetarium's 20-meter dome seating 430 people, to three-meter inflatable portable domes where children sit on the floor. ... Together dblo associates make a huge impact in the architecture, interior design and development arena in London. ... With the holidays around the corner what better way to spoil your family than with your very own private home cinema. ...

... Under certain conditions, like those in the nucleus of a QSO, all atoms can be made to emit light at particular wavelengths. ... If that source is approaching the observer, the wave is squashed up onto itself making the wavelength shorter. ... This is redshift. ... You can see how the section of the QSO spectrum which we observe changes with redshift. ... We then see how far we had to slide the observed spectrum along the scale to make it match and that is the objects redshift. ... The 2QZ team . ...

... Classes . ... Nebula Class Reference . ... getInfoString (const StelCore *core, const InfoStringGroup &flags) const . ... getCloseViewFov (const StelCore *core=NULL) const . ... getVMagnitude (const StelCore *core, bool withExtinction=false) const . ... getSelectPriority (const StelCore *core) const . ... getEquinoxEquatorialPos (const StelCore *core) const . ... getJ2000GalacticPos (const StelCore *core) const . ... getPositionInfoString (const StelCore *core, const InfoStringGroup &flags) const . ...

... For the past years I have been working on the problem of synthesis of light curves of close binary systems, consisting of a normal star and a compact object (point object with fixed X-ray luminosity). ... Possible existence of a bright spot on the disk's lateral surface is taken into account. ... The last of then will be published in Gordon and Breach Publishers ( Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ... Cherepashchuk A.M., Katysheva N.A., Khruzina T.S., Shugarov S.Yu. ...

User catalogs allow you enter positions for your objects into a file, to save time during an observing run. ... Before diving into the details, here is an example: # default coordinate system and object # (these are the standard defaults, so if you like them you can omit this line) CSys=FK5; Date =2000; RotType= Object ; RotAng=0 # some random objects # Name Pos1 (e.g. RA) Pos2 (e.g. Dec) Options in keyword-value format NGC6543 rot 90 ... Object Data . Defaults . Catalog Options . ...

SURNAMES OF THE ASTRONOMERS IN THE NAMES OF THE LUNAR OBJECTS. ... Sternberg State Astronomical Institute, Moscow University, Moscow, Russia The whole complex information about toponymy, morphology, selenographical coordinates and dimensions of the lunar objects was included in the automated information system for the Lunar Nomenclature. ... You may receive more detailed information in the Russian version of this article (nomen.pdf). ...

... Тип товара: Юбки . ... Юбка SCOTCH&SODA для девочек (Разноцветный) . ... Размер RU: 12 . Блузка OBJECT Beate Модель: 23021083 OBJBEATE L/S SHIRT C Состав: 100% вискоза длинные рукава Модель: 270472452 . ... Цвет: Кремовый . ... Цвет: розовый . ... Артикул: 00354 Цвет: золотой Состав: латунь Размеры: 3,5х10,5 см Страна дизайна: Италия Страна производства: Италия Товар сертифицирован. ... Такая ваза подойдет и для цветов, и для декора интерьера. ... Цвет: красный . ... Платье adL - adL - adL . ...

Электронная библиотека астронома-любителя. ... библиотека . архив RSN . ... Ru.Space.News: . Апрель 1998 . ... Дата: 03 апреля 1998 (1998-04-03) От: Alexander Bondugin Тема: Hubble Reveals Details Of A Newly Born Planetary Nebula Привет всем! ... STScI-PR98-15 HUBBLE REVEALS DETAILS OF A NEWLY BORN PLANETARY NEBULA Astronomers have caught a peek at a rare moment in the final stages of a star's life: a ballooning shroud of gas cast off by a dying star flicking on its stellar light bulb. ...

... Courtesy of NASA/ESA Observation data (J2000 epoch) Constellation Right ascension Declination Redshift Distance Type Serpens Caput 15h 17m 14.4s[] +21° 35 08[] 12,740±50 km/s[][1] 600±30 Mly (183±8 Mpc)[1] SA0(r) [citation needed ] [a] Apparent dimensions (V) 0.28 в 0.28[] Apparent magnitude (V) 16.0[] Notable features Ring galaxy Other designations PGC 54559,[] PRC D-51[] See also: Galaxy, List of galaxies Hoag's Object is a non-typical galaxy of the type known as a ring galaxy. ...

... Prague , 2006 . ... The draft classification (version August 9, 2006 ) for new GCVS versions . Along with the "+" sign (coexistence of two types), it is suggested to introduce the "|" sign (meaning "or") - for classification options for the same object, e.g. EC|Ell, EC|RR. Pulsating variables . ... DCEP , DCEPS , CEP ( B ) DCep , DCep 0, DCep 1, DCepB 01, DCepB 12 . ... Eruptive variables . ... PN, WD, WR Remove from the classification, indicate through the spectral type or Remarks . ...

... Home Articles Observing Resources for Amateur Astronomers ? Part 1: Beginning Observers Observing Resources for Amateur Astronomers ? Part 3: Advanced Observers . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . Observing Resources for Amateur Astronomers - Part 3: Advanced Observers . Observing Resources for Amateur Astronomers - Part 4: Magazines and Miscellany . ...