Authors: V.A. Marsakov , Yu.G. Shevelev , . Journal: 1988, Astron Zh. ... Absolute magnitudes, metallicities, effective temperatures, surface gravities, distances, and tangential velocities are calculated for 5498 F stars with homogeneous data on uvby photometry and proper motion, and placed within 80 pc from the Sun. Components of space velocities, eccentricities of galactic orbits, perigalactic and apogalactic distances, and maximal remotness from galactic plane are presented for 1787 stars. ...

... The USNO Millennium Time Ball . ... Spanning over 25,000 light-years, comparable to the distance from the Sun to the center of our own Milky Way galaxy, a cosmic jet seen in X-rays blasts from the center of Centaurus A. Only 10 million light-years away, Centaurus A is a giant elliptical galaxy - the closest active galaxy to Earth. In the Heart of the Tarantula Nebula . ... Neptune in Infrared . ... Neptune is the eighth most distant planet from the Sun, thirty times the Earth-Sun distance. ...

Courtesy of NASA's National Space Science Data Center . Launch Date: 1968-11-10 . ... Zond 6 was launched on a lunar flyby mission from a parent satellite in Earth parking orbit. ... Zond 6 flew around the Moon on November 14, 1968, at a minimum distance of 2,420 kilometers (1,504 kilometers). ... This experiment had the purpose of photographing the lunar surface, especially areas missed by earlier missions, and to overlap with better photography those areas that had been previously covered. ...

... NASA research confirms it's a small world, after all . Using space measurement tools and a new data calculation technique, scientists detected no statistically significant expansion of the solid Earth. ... A NASA-led research team has confirmed what Walt Disney told us all along: Earth really is a small world, after all. ... That was the prevailing belief until scientists developed the theory of plate tectonics, which explained the large-scale motions of Earthт??s lithosphere, or outermost shell. ...

RATAN-600 radio telescope . ... In the "radio-Shmidt telescope" mode the antenna system the South sector of the main mirror with the flat mirror ("South+Flat") of the RATAN-600 radio telescope is used. ... The antenna system the South sector with the flat mirror. ... The flat and circular mirrors of the RATAN-600 form the basis of the system. ... In the case of antenna system "South+Flat" the planoid is flat mirror, the circular reflector of RATAN-600 is the second mirror. ...

... THE SIMPLEST MODEL. ... 13, Moscow 119992, Russia E-mail: san@sai.msu.ru Abstract: The analysis of the simplest model shows that an asteroid ­ rubble pile evolves, depending on the parameter V2d (where V is the average velocity of fragments and d is the average distance between fragments), either as a conglomerate of "independent mutually gravitating clusters" (when V2d < fm, where f is the gravitational constant and m is the average mass of a fragment) or as a "receding cluster" (when V2d > fm). ...

... Fitting the observed dependence includes calculations of the polarization cross-sections averaged over particles orientation and size distribution, their normalization and the comparison of obtained dependencies with Serkowski's curve representing observational data for a chosen star. ... Variations of the polarization factors with wavelength are shown in Fig. 16 for homogeneous spheroidal particles with PF orientation. ... The distinction between prolate and oblate spheroids is also clearly seen. ...

... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

... Description . Catalog . ... In the Catalog, we publish equatorial (ЮБ 2000 , ЮД 2000 ) and galactic (l,b) coordinates of cluster centers derived as the position of overdensity in 2MASS catalog (Koposov et al. ... Distances, color-excesses and ages are the mean-square values calculated using all available evaluations from different color-magnitude diagrams. ... There are individual pages for every cluster where all available plots and parameters are published. ... 2002). ...

... Серия: Country . ... Размер: 50x17,5x15,5 см . ... Цвет: фиолетовый . ... Тип: балконный ящик . ... Цвет: черный . ... Размер EU: 41 . ... Кеды Zona3. ... Объем - 1,5 л. Вес - 0,33 кг (размер S/M) и 0,34 кг (размер M/L). ... Цвет: Зеленый . ... Цвет: синий . ... Размер INT: 40 . ... Материал: Натуральная кожа , Размер: 136x95 . ... Цвет: Темно-синий . Размер INT: 176/16 лет, . ... Цвет: серый . Цвет: Черный . ...

... In 1930, Trumpler noticed that linear diameters (LD) of open clusters increase with distance (D) from the Sun. ... Since that time, the interstellar absorption has become one of the best studied factor in astrophysics, and we may hope that current OCL distance scales are free from this LD-D correlation. To verify if this is the case we have chosen several modern OCL distance scales and test them with the same clusters and the same angular diameters that Trumpler had used back in 1930. ...

Subject of Geodesy. ... The Main Problems of Geodesy. ... The Main Parameters of the Terrestrial Ellipsoid, Ratios between Them. ... The Main Equations of Geodesic Line. ... Geodesic Station Coordinates Calculation on the Ellipsoid Surface. Primal and Inverse Geodesical Problems, Methods of Their Solution. ... Geodesical Coordinats Determination by Gauss-Kruger Coordinates. ... Methods of Synchronous Observations and Orbital Methods of Artificial Satellite Use for Coordinates Determination. ...

... Cooperation with third countries and international organizations . ... Scientific and technological cooperation with the Countries of Central Europe (CCE) and the new independent States (NIS) . ... 1 .A SPECIFIC RTD PROGRAMME IN THE FIELD OF COOPERATION WITH THIRD COUNTRIES AND INTERNATIONAL ORGANIZATIONS-INCO 8 . ... From EU Member States and CCE/NIS 28 . From other European countries 28 . ... Contact persons in the EFTA/EEA Member States 43 . Contact persons in other countries 44 . ...

. Next: Diameters Up: Derived parameters Previous: Absolute magnitudes Contents . d_stars Compute distance D from parallax, absolute magnitude, or both. Christian Hummel 2015-04-28

... S.P. KOROLEV ROCKET AND SPACE CORPORATION ENERGIA . Corporation . OAO RSC "Energia" . ... Company's History . ... Brief History of Rocket and Space Technology . ... Flights Chronology . ... ISS Russian Segment . ... Rocket Space Complexes . Sea Launch . ... He was in charge of work on the development of space stations Salyut, Mir, space rocket system Energia-Buran, a common series of our country's launch vehicles. ... Contribution of RSC Energia to the Russian Rocket-Space Technology . ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The algorithm and appropriate program for decametric radiosignal propagation conditions prediction for paths from 500 to 9000 km have been developed at ISTP SB on the basis of normal wave method (AltyntsevaB.I,Iliyin N.V., Kurkin V.I. and others //Decameters channel simulation on the base of normal wave method . ... Solar activity indices are chosen automatically from the prediction date from the database . ...

Системные исследования и разработка спутниковых систем ДЗЗ; . Разработка и создание бортовых радиометрических средств в СВЧ-диапазоне; . Разработка методов дистанционной диагностики процессов в системе океан-атмосфера с помощью спутниковых средств СВЧ-радиометрии (синоптические океанические вихри, фронтальные зоны, течения, волны Россби, тайфуны и ураганы, явление Эль-Ниньо). ... Директор . ... 1-ый заместитель директора . ... 2014 НТЦ "КОСМОНИТ" ОАО "Российские космические системы" . ...

... Classes . ... gTime Class Reference . This class implements time calculations. ... gTime (double ai_jDays=0) . ... gTime (const gTime &timeSrc) . ... Set the time value of the time object to the julian day of year, day. ... operator= (const gTime &timeSrc) . ... Returns the time GMT value in Julian days. ... Returns the time_t value of the gTime Object. ... Returns a gTime object setted with the actual machine time. ... gTime Object assigned with real machine time. double gTime::getGmtTm . ...

... Contact A Problem of an estimation of accuracy of the asteroid CCD observations . The Minor Planet Center supported by the Interntional Astronomical Union is the main office for keeping observational data of the small Solar System bodies and their investigations. ... At Pulkovo Observatory we are estimating an accuracy of the CCD asteroid observations obtained by amateurs and professional astronomers all over the World using the MPC database. ...