The following parameters as a function of the universal time are enclosed in this file. 1. no . ... Universal time date (YYYYMMDD) . ... Universal time (.hhmmss) . ... Geomagnetic local time in the satellite position . ... geomagnetic latitude . ... co-ordinate - . ... system . ... co-ordinate system . ... Solar-ecliptic co-ordinate - . ... Satellite velocity . ...

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• INTERBALL TAIL PROBE SITUATION ANALYSIS
• Synchronous Orbit
• Lagrangian Points

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . ... Space Flight . ... Science Fiction . UFOs and Fringe Science . Monthly Sky Notes . ... NASA's Cassini spacecraft obtained this image of Saturn's moon Helene on June 18, 2011. Image credit: NASA/JPL-Caltech/Space Science Institute) . ... Your email address will not be published. ... Email * . ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

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... With enough velocity, a spacecraft can break loose from the Earth's gravity and enter an orbit around the Sun, like that of a planet. If it then orbits the Sun with the same period as the Earth--one year--it may keep a fixed position relative to Earth. ... If the distance is just right--about 4 times the distance to the Moon or 1/100 the distance to the Sun--the spacecraft, too, will need just one year to go around the Sun, and will keep its position between the Sun and the Earth. ...

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• Synchronous Orbit
• Polar Orbiting Satellites
• Neptune

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. ...

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... oal (oal-3.113.2) [xmmsas_20050815_1803-6.5.0] . Meta Index / Home Page / User-visible functionality / Environment variables There can be two types of orbit data in an ODF, viz. predicted and reconstructed ones. ... Allowed values for SAS_ORBIT are P (predicted) and R (reconstructed). If SAS_ORBIT is not set to either of the above values (or unset) the orbit access routines in the oal will first look for reconstructed orbit data in the ODF and, if none are found, for predicted ones. ...

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• Generation from In-Orbit Data
• xmmtrack: XMM orbit TRACKing

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Mercure et V†йnus †а lтАЩextr†йmit†й de leur orbite . ... Pour en savoir plus sur cette configuration des plan†иtes Mercure et V†йnus, lisez l'article que nous lui consacrons dans Ciel & Espace de janvier 2011 , n€ђ488, p.36. ...

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• Observez lтАЩast†йro†пde 2012 DA14 lorsquтАЩil fr†‡le la Terre | Ciel et Espace

... Serveur d' ph m rides des satellites naturels des plan tes. ... Japet S9 Ph b S10 Janus S11 pim th e S12 H?l?ne S13 T?lesto S14 Calypso S15 Atlas S16 Prom?th?e S17 Pandore S18 Pan S19 Ymir S/ 2000 S 1 S20 Paaliaq S/ 2000 S 2 S21 Tarvos S/ 2000 S 4 S22 Ijiraq S/ 2000 S 6 S23 Suttungr S/ 2000 S 12 S24 Kiviuq S/ 2000 S 5 S25 Mundilfari S/ 2000 S 9 S26 Albiorix S/ 2000 S 11 S27 Skathi S/ 2000 S 8 S28 Erriapo S/ 2000 S 10 S29 Siarnaq S/ 2000 S 3 S30 Thrymr S/ ...

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• IMCCE-SAI: Natural Satellites Service. Ephemerides. Satellites of Saturn
• IMCCE-SAI: Natural Satellites Service. Ephemerides. Satellites d'Uranus
• IMCCE-SAI: Natural Satellites Service. Ephemerides. Galileans

... Epimetheus and Janus: Interchangeable Moons of Saturn . ... 2.11.2005 . ... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: These two moons change places. Epimetheus and Janus , two small moons of Saturn , actually switch positions as they orbit their home planet. ... One moon orbits Saturn well ahead of the other, at first. ... Pictured above , the two moons were photographed rounding their orbits just outside of Saturn's F ring . ... Publications with keywords: Saturn . ...

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• Астронет > Epimetheus and Janus: Interchangeable Moons of Saturn
• Journal "Peremennye Zvezdy"
• XWare > APOD

... Tonight's Sky . ... Mars . ... Home . ... Observing . ... Mars orbiter repositioned to phone home Mars landing . ... Two other Mars orbiters, NASAт??s Mars Reconnaissance Orbiter and the European Space Agencyт??s Mars Express, also will be in position to receive radio transmissions from MSL during its descent. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

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• Earth spins as it orbits the Sun, and the solar system is orbiting the galactic
• How do scientists predict the orbit and apparent т??peakт?? magnitude of an
• NASAт??s Glory satellite fails to reach orbit | Astronomy.com

SPIKE currently uses constants for all orbit parameters except longitude of the ascending node (large omega). ... Log into planinst or planning. run the following report: $report spss_data_dk:[planinst.kinzel.c1]lrpfit/par=(fit:sx_940890,cycend:1998.200)/out=lrpfit.rpt . ... set default [lrp.orbits] . ... To create the plots, run the MONGO file . ... When ready, (link to creating batch cv-desc files), update the cv-desc files and make this constraint set the operational set when RPS2 will be released. ...

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• HST Primer for Cycle 22
• Fine Guidance Sensor Instrument Handbook
• NICMOS Focus: Design vs. On-Orbit Performance

... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...

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... The plots show the az,za and ra,dec positions of the telescope during the test (.ps) ( .pdf ): . Page 1: az,za positions during the test . ... A datafile is also included for each day giving the measured ao positions for each day (utcSec, ra,dec of date). 16aug09 plots of telescope postion(.ps) ( .pdf ). Datafile of telescope position . ... cal on/off samples averaged to 1 seconds (.ps) ( .pdf ) . ... The first set of plots shows the cal on/off samples averaged to 1 seconds (.ps) ( .pdf ): . ...

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• glonass satellites
• Orbits in the period / acceleration plane
• radar calibration via satellites

NEWS FEDERATION rus ENCYCLOPEDIA rus HISTORY rus MIR STATION RUSSIAN . ... Cosmonauts. ... Space Science . ... History . ... Agencies. ... James Webb Space Telescope . ...

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... 2005 November 2 . Epimetheus and Janus: Interchangeable Moons of Saturn . Credit : Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: These two moons change places. Epimetheus and Janus , two small moons of Saturn , actually switch positions as they orbit their home planet. ... One moon orbits Saturn well ahead of the other, at first. ... Pictured above , the two moons were photographed rounding their orbits just outside of Saturn's F ring . ... About APOD | ...

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• Dynamics of Pluto
• APOD: 2009 February 18 - Satellites Collide in Low Earth Orbit
• Neptune

... Positions in 2000 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2001 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2002 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2003 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2004 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . ...

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• Faulkes Telescope
• The Human Orrery
• Armagh Observatory

New Satellites of Saturn . On July 26, 1995, Amanda Bosh of Lowell Observatory announced the discovery of at least two and perhaps four new satellites of Saturn . The discovery was based upon images taken by the Hubble Space Telescope on May 22, 1995, when Saturn's rings were tilted edge-on to the Earth . ... The two satellites S/1995 S1 and S2 lie inside Saturn's thin, eccentric "F" ring . ... The fourth satellite S/1995 S4 is 6,000 kilometers (3,700 miles) beyond the F ring. ... S/1995 S 3 . ...

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• Neptune
• Sun, Planet and Satellite Data
• Saturn's Moon Phoebe

Prognoz-7 satellites magnetometer observation database . The Prognoz-7 satellite was launched 30 October 1978 into orbit with perigee 500 and apogee 203000 km, orbital period was 98 hours. Magnetic field measurements were conducted by SG-70 magnetometer with working range +/- 60 nT., accuracy about 0.3 nT. and sampling rate 1 measurement per 10.24 sec. Magnetic measurements and satellite position data in GSE coordinate system are presented in separate ASCII files. ...

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• Prognoz-6 position data
• Empirical Model of the Nighttime Winter Ionospheric Trough

... To plot the data (and model, here xitau.model), I have read the model, computed the model values for the ASTROMETRY, and used Plot|ASTROMETRY to produce the ASTROMETRY plot widget. ... First, plot the data and with Util|Ellipse and the mouse buttons interactively define an apparent ellipse to fit your data as best as you can. ... Under Util|Orbit, there is a Thiele-Innes procedure to estimate the orbital elements using your apparent ellipse and Kepler's laws! ... Back to tour page . ...

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• ASTROMETRYFIT
• OYSTER Lab
• Plot data from the WDS

Method for High-accuracy Determinations of Orbits of Small Bodies from Three Observations . ... A new method is suggested for finding the preliminary orbit of a small celestial body from three pairs of angular measurements of its position at three moments. ... The methodical error of orbit computation by the proposed method is generally three orders smaller than the corresponding error of the traditional approach based on the construction of the unperturbed Keplerian orbit . ...

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• AY2016 (contents)
• AY2015 (contents)
• AY2012 (contents)

... INTRODUCTION Some Analysis Centers in Russian Federation such as Information-Analytical centre of positioning, navigation, and timing (IAC PNT) TSNIIMASH, Mission Control Centre (MCC), High-precision ephemeris and time correction estimation system (HETCES/SVOEVP) as well as a number of Analysis Centers of the International GPS Service for Geodynamics (IGS) are producing daily precise orbits and time corrections of GLONASS satellites. ... Calculation of weights of both the Centers and the satellites....

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• http://www.gao.spb.ru/english/as/j2014/presentations/sokova.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/suvorkin.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/vavilov.pdf