This groups includes about 200 communication satellites ("comsats") scattered in synchronous orbits above the Earth's equator. ... 6 Earth radii (42,000 km or 26,000 miles), these satellite make one orbit per day, and therefore as the Earth turns, they always stay above the same ground station. ... Still another application is the 24-satellite network of the "Global Positioning System" (GPS), in circular orbits at distances of about 4.1 Earth radii (26,000 km or 16,000 miles). ...

... 29a. Satellite looking up . ... 29e. Explorers of distant space . Space Index . This groups includes about 200 communication satellites ("comsats") scattered in synchronous orbits above the Earth's equator. ... 6 Earth radii (42,000 km or 26,000 miles), these satellite make one orbit per day, ( sidereal day of 23 h 56 min--see here ) and therefore as the Earth turns, they always stay above the same ground station. ... Next Satellite Class: #29e Missions to Planets and to Distant Space . ...

YAMAL 300 COMMUNICATIONS SATELLITE . Yamal 300 SC #1 . ... 1370 . ... Satellite stationkeeping accuracy in latitude and longitude, deg. 0.05 . ... Yamal 300 SC #1 coverage area . ... YAMAL-200 COMMUNICATIONS SATELLITE . ... Official WEB-site of S.P.Korolev RSC Energia . ...

... News Latest News News Archive Newsletter Quarterly Status Report . ... Data Analysis SAS News What is SAS? ... Archive, Pipeline & Catalogues XMM-Newton Science Archive Pipeline Processing System Observation Data Status Time Correlation Fix Serendipitous Source Catalogue OM Serendipitous Source Catalogue Slew Survey Catalogue Latest Slew Results Browsing Interface for RGS Data Live Radiation Monitor Plots Radiation Monitor Files . ... Please refresh your browser to update the satellite position. ...

Ground Support of RadioAstron . Control and Tracking Stations . RadioAstron satellite control (command transmission, telemetry, orbit measurements) will be conducted from Evpatoria and Bear Lake control stations. ... Coarse orbit measurements will be carried out from control stations. Each measurement takes ten minutes. ... Orbit measurements at tracking stations give only radial component of spacecraft velocity but the measurements are going continuously during observing sessions. ...

... HST . How long does my Position Mode exposure time need to be? ... HST Peer Review Process . ... HST Overview . Overview . ... Phase I Proposing . ... Cycle 24 Announcement . Cycle 23 Results . ... DD Time . Mid Cycle Submission . ... Phase II Cycle 23 . ... Phase I . ... A: One minute is usually sufficient for Position Mode observations. Often, the target acquisition is shorter than expected and, as a result, an observer might get several seconds more exposure time than specified. ...

Program: TRACE Purpose: TRACE plots image values at user given positions as function of distance to a plot centre (in 2-d (sub)sets). Category: ANALYSIS, PLOTTING File: trace.c Author: M.G.R. Vogelaar Keywords: INSET= Give set (, subset): Only one subset is allowed. ... XYBOX= Give size of box around one pixel: [3,3] The resulting value at a selected position is an average of the pixels in the defined box around that position. ... POSITION= Give position x, y: Physical values are allowed. ...

National Aeronautics and Space Administration . ... James H. Newman (Ph.D.) . NASA ASTRONAUT (FORMER) . ... Recipient of the American Astronautical Society Flight Achievement Award (1994, 1999) for his work as a member of the STS-51 and STS-88 crews. ... That same year he came to work at NASA s Johnson Space Center, where his duties included responsibility for conducting flight crew and flight control team training for all mission phases in the areas of Orbiter propulsion, guidance, and control. ...

Natural Satellites Service. ... Apparent Encounters . of the Tycho-2 Catalogue stars and the main natural planetary satellites . ... Suggestions . ... Here we present the precalculated circumstances of the apparent encounters of the stars of the Tycho-2 Catalogue with the main satellites of Saturn (S1-S8) for the period from November 2004 to February 2010, and with the Galilean satellites of Jupiter for the period from November 2004 to October 2010. ...

... Classes . ... TelescopeTCP Class Reference . This TelescopeClient class can controll a telescope by communicating to a server process ("telescope server") via the "Stellarium telescope control protocol" over TCP/IP. ... TelescopeTCP (const QString &name, const QString &params, Equinox eq=EquinoxJ2000) . ... getInfoString (const StelCore *core, const InfoStringGroup &flags) const . ... getEquinoxEquatorialPos (const StelCore *core) const . ... getJ2000GalacticPos (const StelCore *core) const . ...