... By using the tools of sections (20) and (21), the mathematics of approximate solutions developed in (M-5), and assuming all orbits are circles, it is a relatively straightforward job to calculate the distance to the Lagrangian L1 point (or to L2). ... Let the gravitational constant be denoted by G , the mass of the Sun by M , that of Earth by m , the Earth's distance from the Sun by r and its velocity in its orbit by v . ... GMm / r 2 = mv 2 / r . and multiplying both sides by r / m . ...

... Newcomb, Simon, "On the dynamics of the Earth's rotation, with respect to the periodic variations of latitude", Monthly Notices of the Royal Astronomical Society , 52 (1892), 336-341 [ Local PDF ADS link ]. ... Stephenson, Francis Richard Houlden, Michael A., "The Accuracy of TuckermanтАЩs Solar and Planetary Tables", Journal for the History of Astronomy , 12 (1981), 133-138 [ Local PDF ADS link ]. ... Astronomy and Astrophysics , 322 (1997), 347-351 [ Local PDF ADS link ]. ...

... We revised topographical data obtained for the region to construct a generalized structure of the SPA basin as ringed formation. ... Because of our previous analysis of the ring structure [5, 6] we assumed the projection center o o coordinates as 180 W and 40 S. The hypsografic map shown in Fig. 1 demonstrates a hemisphere of the Moon which contains the SPA basin structure and its environs. ... Then we find the o o basin outermost ring center at roughly 180 and 40 S. Inner structure of the SPA basin...

Subject, Problems and Objects of Theoretical Astrophysics. ... Stellar Photospheres, Their Features. ... Physics of Continuous Radiation Absorption in Stellar Photospheres. ... Continuous Radiation Absorption in Stellar Photospheres of Various Spectral Classes. Solar Type Photospheres. ... Characterisics of Absorption Lines. ... Interstellar Absorption Lines, Their Features. ... Physical and Dynamic Features of Interstellar Medium, Which Follows from Observations of Interstellar Absorption Lines. ...

INTEGRAL observations of SS433 : new results Anatol Cherepashchuk Sternberg Astronomical Institute, Moscow University, Russia In collaboration with: Rashid Sunyaev ... Eleonora Antokhina, Nikolai Shakura, Darja Kosenko, Elena Seifina,Sergey Molkov (IKI) 1 Overview · Introduction · · · · Observations Analysis of hard X-ray spectra Analysis of hard X-ray eclipses Discussion and conclusions December 26, 2007 ...

... ASTRONOMICAL TELESCOPES . ... HOME . ... Home Products Telescopes Astronomical Telescopes . Recreational astronomical telescopes (ASTELE™) feature Maksutov Cassegrain or Maksutov Newtonian optical design. ... These telescopes (except ASTELE ™ 70, 95) are available in three configurations: OTA (Optical Tube Assembly), G (German Equatorial Mount) and EL (with motorized base). ... These telescopes are available in two configurations: OTA (Optical Tube Assembly) and G (German Equatorial Mount). ...

... ГАО. ... НАН Укра?ни . ... 16 вересня 2016 року в ГАО НАН Укра?ни в?дбудуться Орловськ? читання. ... Головну астроном?чну обсерватор?ю НАН Укра?ни засновано 17 липня 1944 р. з ?н?ц?ативи в?домого вченого, астронома й геоф?зика, Олександра Яковича Орлова (1880 ? ... В Головн?й астроном?чн?й обсерватор?? пл?дно працюють 8 наукових в?дд?л?в: астрометр??, ф?зики з?р та галактик, косм?чно? геодинам?ки, ф?зики косм?чно? плазми, ф?зики т?л Сонячно? системи, ф?зики Сонця, експериментально? астроф?зики ? ...

Discover the cosmos! ... 2000 December 29 . The Dark Horsehead Nebula . ... Image Processed by Al Kelly . Explanation: While drifting through the cosmos this magnificent interstellar dust cloud, sculpted by stellar winds and radiation, has chanced to assume a recognizable shape. Fittingly named The Horsehead Nebula it is embedded in the immense complex of star forming gas and dust surrounding the Orion Nebula some 1,500 light-years distant. ... About APOD | ...

... Астрономические каталоги . ... Астрономический Интернет . ... на учебный Автоматизированный Астрономический Комплекс Новосибирского Государственного Университета. ... Автоматизированный Астрономический Комплекс оснащен телескопом-рефлектором системы Ньютона с параболическим главным зеркалом диаметром 315 мм. и солнечным телескопом-рефрактором с объективом диаметром 100 мм. ... Расположен астрономический комплекс на лабораторном корпусе НГУ в Академгородке, 30 км к югу от г. Новосибирска. наверх . ...

... All the galaxies are divided into 4 groups depending on the environment type; every subsample contains more than 10 galaxies. ... An effect of environments is seen both for the nuclei and for the bulges: if we consider the clusters (Virgo and Ursa Ma jor) and group centers as dense environments and the field and group periphery as sparse environments, then in the dense environments the stellar populations of S0s are in average older by 4­5 Gyr than in the sparse ones. ...

... Head of the seminar: Prof. B.V. Somov, . ... The seminar considers the questions related to generation of magnetic fields in astrophysical plasmas, effect of the magnetic reconnection and particle acceleration in strong magnetic fields, the origin and propagation of cosmic rays, the flares and other non-stationary phenomena in the solar atmosphere and solar wind, Sun Earth connections and physical processes in the heliosphere. ... On the Topological Models and Topological Trigger of the Solar Flares...

XIV Нижне-архызская осенняя астрономическая школа . Специальная астрофизическая обсерватория РАН . 1-10 ноября, 2014 г. Специальная астрофизическая обсерватория РАН при поддержке Фонда "Современное Естествознание" и финансовой поддержке некоммерческого Фонда Дмитрия Зимина "Династия" проводит на осенних каникулах 2014г. с 1-го по 10-е ноября астрономическую школу для мотивированных школьников 9-11 классов и учителей астрономии. ... vo @ sao.ru ( Олег Васильевич Верходанов ) . ...

In the regular experiments carried out with the RAS radio telescopes at Pushchino during 1999-2002, the study of the radial dependence of scattering of compact natural radio sources was extended to remote regions of the solar plasma environment. ... The stream in the transalfvenic region displays the same typical radial structure as observed in the transonic region, i.e., the existence of a "precursor" - a narrow band of reduced scattering preceding a wide region of enhanced scattering. ...

Solving of the ACH Problem in the Project "Interplanetary Solar Stereoscopic Observatory" . ... Petersburg State University, St. Petersburg, Russia Abstract: . ... Very Long Baseline Interferometry (VLBI), Near Earth Objects (NEOs), Project "Interplanetary Solar Stereoscopic Observatory", ACH Problem, NEO-observation errors, accuracy of the distance to an asteroid, revolution period, maximal distance of the NEO, synchronous on-board long-focus astrograph observation, 3D-vector of the NEO's position. ...

... Club By-laws . ... Other Club Activities . ... Public Nights . ... Dr. James Green, NASA, Director Planetary Science will be our esteemed speaker on Tuesday, April 12, 2016 at 7:30 PM in Peyton Hall on the Princeton University campus. ... Our astronomers setup telescopes for public use at Communiversity in Princeton, Super Science Saturday at the NJ State Museum in Trenton and at various public events around Mercer County. ... Amateur Astronomers Association of Princeton, Inc., ...

... Moon Phase below . ... ARTICLE: Why the moon always shows us the same face . ... Before you continue reading, you should know that this was not always the case, i.e. the Moon once was rotating with respect to the Earth, so that on every night a terrestrial observer (if there was one, because this was long, long before mankind appeared on our planet, and even before any major animals had appeared) saw another face of the Moon. ... Figure 1 (not to scale) shows how we can imagine the system Earth-Moon...

... On Monday, August 31 SSAU Rector Evgeniy Shakhmatov within the framework of an extended meeting of the Academic Council presented a report on the results of the university activities in the academic year 2014/2015, as well as outlined the prospects for the university development. ... In the academic year 2014/2015 students training in SSAU has been conducted on 67 Bachelor s programs, 45 Specialist s programs, 29 Master's educational programs and 6 fields of secondary vocational education. ...

... In 1959 the Government Decree enacted OKB-1 to initiate work on the development of ballistic rockets using solid propellant RT-1 with a warhead flight range of 2 500 km, a launch mass of up to 35 t, and a combat charge mass of 500 kg. In parallel, the tasks were pursued to implement work on RT-2 assuming the development of a ballistic rocket with a warhead flight range from 10 000 to 12 000 km and a combat charge mass of up to 500 kg. ... Official WEB-site of S.P.Korolev RSC Energia . ...

http ://www.cbat.eps.harvard.edu/iau/cbet/003900/CBET003962.txt Electronic Telegram No.3962 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University ; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau en eps.harvard.edu (alternate cbat en iau.org) URL http ://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network SUPERNOVA ...

Central Bodies Masses of Selected Globular Clusters N.A.Shakht, A.A.Kiselev, Yu.N.Gnedin and E.A.Grosheva. The Main Astronomical (Pulkovo) Observatory RAS 47 Tuc ­NGC 104 RA 00 24 .1 Dec -72° 04 .9 Size = 30.9 mvis + 4. 0 m D from = 12,1 kpc, h m Cen - NGC 5139 NGC 6397 (Ara) RA 17 h40.m7 Dec -53o 40'.4 Size = 31',0 mvis + 5,3m D from =2.3 kpc RA 13h 26m .8 Dec -47° 28 6 Size = 36.3 m vis +3. 7 m D from =15.8 ±1.1 kpc, 12109 years, Age: 10109 years, (13.4 ± 0.8)109 years. ...