The Second U.S. Naval Observatory CCD Astrograph Catalog ( UCAC2 ) Table of Contents 1) Introduction 2) Summary of the Project a) Observations and Instrumentation b) Reductions of UCAC Observations c) Computation of Proper Motions 3) Properties of the Catalog and Important Notes For the User a) Sky Coverage b) Completeness c) Positions, Proper Motions and Error Calculations d) UCAC2 Magnitudes e) 2MASS Photometry f) Non-stellar ... All stars in the UCAC2 have proper motions. ...

... Например, для исследования пройденного расстояния телом с переменным ускорением необходимо использовать формулу [pic]. ... Модели физических процессов, уравнения их описывающие, а так же некоторые другие характеристики представлены в Таблице 1. ... процесса | ... pic] |коэффициент |тела, [pic]- |координата | ... С другой - программа, используя численные методы, позволяет исследовать большое количество сложных физических процессов, анализировать их модели, сравнивать результаты при разных параметрах....

The new view on the population of Galactic open clusters A.E.Piskunov1, N.V.Kharchenko2, S.RЖser3, E.Schilbach3, R.-D.Scholz4 1 2 3 4 Institute of Astronomy, Moscow, Russia Main Astronomical ... Observatory, Kiev, Ukraine Astronomisches Rechen-Institut, Heidelberg, Germany Astrophysikalisches Institut Potsdam, Germany What are open clusters and what do they teach us Groups of Population I ... Cluster complexes: OCC-1 = Gould's Belt cluster complex? ...

Главная Проекты Mars Exploration Rover . ... With far greater mobility than the 1997 Mars Pathfinder rover, these robotic explorers will be able to trek up to 100 meters (about 110 yards) across the surface in a Martian day. ... The rovers will be identical to each other, but will land at different regions of Mars. ... Where Pathfinder had scientific instruments on both the lander and the small Sojourner rover, these larger rovers will carry all their instruments with them. ...