. The Ursid meteor shower peaks under a dark sky before dawn December 23. Observers can expect to see up to 10 meteors per hour under optimal conditions that morning. Astronomy: Roen Kelly

... Bad Astronomy . ... I think I will break from my usual format of Bad Astronomy/ Good Astronomy by saying that the way we define seasons currently is not strictly bad, but I feel (in my opinion!) that it could be better. The definition of when the seasons begin is at the moment of solstice or equinox; that is, winter (in the north) starts on December 22 nd and summer starts on June 22 nd . ... Now imagine breaking up the Sun's 46 degree up-and-down yearly swing into 1 day intervals. ...

Accretion torques in windaccreting pulsars Nikolay Shakura Sternberg Astronomical Institute Moscow, Russia K.Postnov (SAI), D. Klochkov, V. Doroshenko, V. Suleimanov (IAAT), L. Hjalmarsdotter (SAI) December 2010 HEA-2010 1 Outline Introduction: disc and quasi-spherical accretion Settling accretion regime Spin-up/spin-down torques Specific pulsars Conclusions December 2010 HEA-2010 2 I. Disc and quasi-spherical accretion December 2010 HEA-2010 3 Disc accretion Shakura N.I. Astron. ... 2010 15 III. ...

... The European HST Archive has been moved to ESA's European Space Astronomy Centre ( ESAC ), Spain, where most of ESA's Space Science Archives are located and operated from. ... The Space Telescope European Coordinating Facility (ST-ECF), jointly operated by ESA and the European Southern Observatory ( ESO ) was, until the end of 2010, the European HST science facility, supporting the European astronomy community in exploiting the research opportunities provided by the Hubble Space Telescope. ...

... The publishers undertake translation into English, publication, and distribution of English-language papers of their journals (that is, the use of results of intellectual activity) only upon signing of copyright transfer agreements. ... To simplify interaction between author(s) and publisher, please submit copyright transfer agreements (in the Russian or English language) together with the manuscript to the editorial board of the respective journal. ... These agreements are contracts of adhesion. ...

... Radio astronomical tests of the engineering model of the space radio telescope (SRT) were completed in Pushchino - see Results . ... Monitoring of the development of the upgrade on-board 1.35-cm receiver (R-SRT-1.35 cm): . ... EM Engineering Model . ... OHCFS-SRT Space Radio Telescope On-board Heterodyne and Clock Frequency Synthesizer set . OHFS-SRT Space Radio Telescope On-board Hydrogen Frequency Standard . ORFS-SRT Space Radio Telescope On-board Rubidium Frequency Standard . ...

... were entered in the atlas. ... In so doing lines were selected which yielded radial velocities close to the symbiotic velocity of MWC 560 (+35 km/s). ... The visible spectrum of MWC 560 is poor in absorption lines especially near the brightness maximum. In our atlas are visible only the blue-shifted components of , , NaI and FeII(42), interstellar lines NaI, a few diffuse interstellar bands (DIB) and telluric lines of and and, at length, traces of the spectra of the M giant. ...

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

... January . February . March . April . ... November . December . ... April ((April Fools)) . ... April (Star Party Reports) . ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

. Russian (WIN) . 10-27/2/1999 . 6-28/1/1999 . For more information send a mail to: info@sputnik.infospace.ru . © 1998-2002 SMIS IKI RAN and SRC "PLANETA" Moscow, Russia.

Microsymposium 38, MS068, 2003 (A4 format) BEAGLE-2 LANDING SITE ATLAS. ... The atlas will include Viking, MOC-WA, and THEMIS IR image mosaics, and a catalogue of high-resolution images from MOC and THEMIS with location maps. ... The poster will show selected maps and images from the atlas, describe the simulated panoramas, and discuss the probability of observing local MOLA-scale topographic features from the landing site. ...

... trans "Lomonosov Moscow State University" %} Sternberg Astronomical Institute . ... Seminar archive . ... Seminar archive 2014 26 December . ... Одно из первых цветных фото, полученных на новом телескопе: http://www.saao.ac.za/spod/first-light-with-master-saao/ . Отчет в Интернет: http://www.pereplet.ru/lipunov/325.html#325 . ... On 2014 December 21, a first light was obtained and on December 23 a first scientific telegram was sent in the Gamma-ray Coordinates Network (NASA). ... All seminars: . ...

... A clock is a tool for the time counting. The stable repeating processes are used in clocks. ... The first timepieces were sand glasses; in the 2nd thousand years B.C. there occured water clocks; the first mentions about mechanical timepieces related to the end of the 6th century; the modern mechanical timepieces are created by H. Huigens in 1657; in 70th years of the 20th century there were widespread the electronic quartz watches with numeric indication, for example on the liquid chips. ...

... Because the DMR instrument is differential and every pixel is multiply sampled, sky maps are produced by solving a coupled system of linear equations (the normal equations) to minimize a chi-squared. ... This is reflected in the algebraic form of the normal equations matrix, so that, if one were to diagonalize the matrix, one would find a single eigenvector whose eigenvalue was identically zero, and the associated eigenvector, viewed as a sky map, would have a constant value. ...

... /Dec 4 24760 eps Per 03 57 51.23 40 00 36.8 2.90 B0.5IV 134 Nov/Dec 5 30614 alp Cam 04 54 03.01 66 20 33.6 4.30 O9.5Iae 1590 129 December 32.0[1] 6 36486 del Ori 05 32 00.40 -00 17 56.7 2.23 O9.5II 2060 144 December 33.0[1] 7 36861 lam OriA 05 35 08.2 09 56 05 3.66 O8III 2175 74 December 8 37018 42 Ori 05 35 23.16 -04 50 18.1 4.59 B1V 20 December 9 37020 th1 OriA 05 35 15.82 -05 23 14.3 6.73 B0.5V 75 December 10 37021 ...

... Шорты спортивные Nike. ... Цвет фасада: дуб белфорт, темно-коричневый . Цвет корпуса: дуб белфорт . ... -153.005_oakb_oakb_kanali_duba,Бренд - Мебель Трия (Россия),Коллекция - Фиджи,Гарантия, месяцев - 84,Время изготовления, дней - 1, Ширина , мм - 2153,Глубина, мм - 529,Высота, мм - 1776, Цвет фасада - дуб белфорт, темно-коричневый, Цвет корпуса - дуб белфорт, Материал фасада - ДСП, МДФ, стекло, Материал корпуса - ДСП, Тип поверхности фасада - матовый, прозрачный, Тип поверхности ...

... October 6, 09:00 09:40 . Jorge Melnick (ESO) . ... We present a statistical and temporal analysis of the ground meteorological properties recorded at the five selected sites for hosting the European Extremely Large Telescope (EELT). ... Marc Sarazin (ESO) . The organization and development of the E-ELT site testing campaign by ESO are described. ... The E-ELT Site Testing activities in northern Chile and Argentina are reviewed, and pioneering explorative campaigns are illustrated. ...

Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . ... 2015 . ... December . ... December, 2015 . Visual indices of solar activity by author's observations . ... Average . ...

Symbolic circuit-matrix processor and evaluator . ... This software is reliable over the range of benchmark circuit complexity (both *.CIR and *.MAT file). ... SYMBOL is a symbolic-algebra package which in contrast to REDUCE, MACSYMA, MAPLE, MATHEMATICA, MathLAB, MathCAD and other known multi-purpose systems is especially intended for analysis of any lumped, linear, time-invariant circuit. ... pure ASCII text . ... CIRSYM - SYMbolic CIRcuit processor used to format ASCII text file *.out for CALCSYM. ...

Gaia local test of General Relativity With Gaia and Solar System Objects Daniel HESTROFFER1, P. DAVID1, A. HEES2, C. LE PONCIN LAFITTE3 1. ... SYRTE/ Observatoire de Paris Gaia, asteroids and orbits -- Gaia -- ESA astrometric space mission has been launched on 2013 December 19th -- is the successor of the pioneering Hipparcos/Tycho (1899-1993; 1997). ... Gaia mission: a few numbers for asteroids Launch date Observing mode Number of asteroids Aver. ... The Nordtvedt effect in the Trojan asteroids. ...