... Format of the orbital elements | Estimation of the extrapolation errors | Version 1" of the orbital elements collection, determined by KIAM during flight and used for operations planning . Version 2" of the of the orbital elements collection, modified by IKI during flight and recommended for the orbital calculations during scientific data processing . ... Three kinds of the INTERBALL Auroral probe (IB_AUR) orbital elements' collections are presented here. ... IKI RAN | SSC IKI RAN | ...

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• About modification of the INTERBALL orbital elements
• The INTERBALL Auroral PROBE orbital elements
• The INTERBALL Tail PROBE orbital elements

This section is on a higher level than the rest, and is primarily meant for advanced users, who may wonder how orbital motion is actually derived. ... As stated earlier, the motion of a satellite (or of a planet) in its elliptical orbit is given by 3 "orbital elements": . ... 3) The mean anomaly M , an angle growing at a steady rate, increasing by 360 degrees each orbit . ... In polar coordinates ( r,f ) describing the satellite's motion in its orbital plane, f is the polar angle. ... The angles: . ...

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... AMPLE (Adaptable Minor Planet Ephemerides) is integrated software package to deal with a number of problems concerning minor planets with the aid of IBM-type personal computer. ... compiling a list of all numbered minor planets which can be seen at certain moment within specified sky region and visualization of their mutual positions; . ... As AMPLE is able to reproduce virtually any table of "the Ephemerides of Minor Planets" , it may be considered as computer version of the EMP. ...

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• (Untitled)
• AY2016 (contents)
• AY2015 (contents)

... Abstract Determine the set of osculating conic orbital elements that corresponds to the state (position, velocity) of a body at some epoch. ... In general, the elements found by this routine can have two kinds of problems: - The elements are not accurate but still represent the input state accurately. ... One recommended "sanity check" on the outputs is to supply them to the CSPICE routine conics_c and compare the resulting state vector with the one supplied to this routine. ...

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• Mode = TRANSConfig = FGS
• Mode = POSConfig = FGS
• Fine Guidance Sensor Instrument Handbook

... 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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• Modelling Spectro-photometric Characteristics of Eclipsing Binaries

... The SIAM is used to point the satellite such that a nominal on-axis source position is imaged onto a specific point on the detectors. ... New angles for the SIAM are calculated from shifts of the pointing of the instrument given in parameter Instrument relative to the pointing obtained by using the SIAM that is specified by parameter siamset . ... Using this, the positions of 5 test sources in the FOV of the instrument are calculated. ... Source Number . Ra (arcmin) . Dec (arcmin) . ...

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

... The following functions are used to create, manage, and destroy standard doubly linked lists. Each element in the list contains a piece of data, together with pointers which link to the previous and next elements in the list. ... This adds a new element (with value data ) onto the end of the list. ... This removes the element in the list with the value data ; if the element isn't there, the list is unchanged. void g_list_free( GList *list ); . ... Singly Linked Lists ...

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• Arcsecond Positions of UGC Galaxies
• HTML Tag Reference
• What was measured?

This diagram illustrates the effects of absolutely positioning a box ("inner") with respect to a containing block established by a relatively positioned ancestor ("outer"). ... The "inner" box has been positioned relative to the top and left edges of the "outer" element's first inline box. ... The reference edges for positioning the "inner" box are indicated in the diagram by thick dashed lines. ... 1 Beginning of body contents.| ... 4 [(+200, -100)] 5 Inner 6 contents. ... Inner contents" is blue. ...

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• Dynamic HTML in Communicator
• Long description illustrating absolute positioning with respect to the initial
• Long description for example illustrating absolute positioning

WDC-A Digital Exchange Format for One-Minute Geomagnetic Data (Update August 1993) 1. The logical record length is 400 coded characters containing header information, blank spaces, and data for one element for one hour. ... Each logical record contains header information and data in the following format: North polar distance, longitude, year, month, day, hour, element, observatory code, blank spaces, 60 data values, and an hourly mean. ... ORG is the origin of the data. A = Alaska Chain. ...

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Pulkovo NEO Page . ... EPOS Software Package . ... EPOS ( E phemeris P rogram for O bjects of the S olar system) is the Windows PC application for study and ephemeris support of observations of the Solar system objects. ... It controls the part of common data and transfers the control to one of the programs that solve the restricted set of tasks. ... So with the EPOS software package one can calculate the accurate ephemerides for many objects and get the quick illustration of their motion as well. ...

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... Any elements created after this call will be placed in the container. ... After such a shell container has been created, it is not visible yet. ... Main program: /* example9.c -XT */ # include stddef.h # include gipsyc.h # include cmain.h # include init.h # include finis.h # include userfio.h # include ggi.h /* * Button keyword handler for quitting. */ static void quit(ident id, char * key , int code, void *arg) { bool button =toflog(FALSE); ( void )userflog( , 1, 2, ...

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• casacore: casa::SolarPos Class Reference
• Flagging a Sector of Data - UVSECTOR
• casacore: measures/Measures/SolarPos.h Source File

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

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• di_eks
• Instrumentation
• Determination of atmospheric parameters and calculation of chemical composition

. Computer Ephemeris. Elements of osculating planetary orbits. Explanations. Each row contains at 0h of Time Dynamical Terrestrial of specified date in system of mean equator and ecliptic J2000.0 the ecliptic osculating elements of heliocentric orbit: inclination of orbital plane (degrees), longitude of ascending node (degrees), argument of perigelion (degrees), semimajor axis (astronomical units), mean motion (degrees per day), eccentricity (dimensionless), mean anomaly (degrees).

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• Laboratory static Fourier-spectrometer
• Contents of Computer Ephemeris for 2014 (DE200/LE200).
• Contents of Computer Ephemeris for 2015 (DE200/LE200).

Stellarium 0.12.3 . ... Classes . ... gSatTEME Class Reference . Sat position and velocity predictions over TEME reference system. ... Set compute epoch for prediction. ... gVector љ . ... Get the TEME satellite position Vector. ... Get the Geographic satellite subpoint Vector calculated by the method compute SubPoint. ... gVector Satellite position vector meassured in Km. x: position[0] y: position[1] z: position[2] . ... gVector Satellite Velocity Vector measured in Km/s x: Vel[0] . ...

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• Stellarium: StelSkyPolygon Class Reference
• Stellarium:
• Stellarium: TextParams Struct Reference

... radar blanker on. az swing at .2 deg/sec. Dome at 19 deg za. center plot smoothed to 11*.2=2.2 degrees. 01mar02: 1400 Mhz birdie .4 deg/sec az swing with dome at 18 degs za. 29jun04: 1400 Mhz birdie .4deg/sec az swing. dome at 18 deg za. rbw:190 hz. ... This is 90 deg from tower8 cables. 27mar03: az,za dependence of faa, aerostat, remy, punta salinas using 1 second sampling. 19jun03: 427.75 Mhz Tv chn 14,chn22 intermods.4 deg/sec az swing with dome at 19 degs za. ... No az dependence. ...

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• Details of Rotang
• byu phased array feed.

... Fit the ring around the equator and then change its inclination from 0 degrees (equatorial orbit used by geosynchronous satellites) to 28.5 degrees (space shuttle orbit) to 51.6 degrees (space station orbit) to 90 degrees (polar orbit used by spy satellites). by Rob Landis, Space Telescope Science Institute . ... With so many satellites now in orbit, it is likely that you have seen an artificial satellite zipping across the night sky. ... http://www.amsat.org/amsat/ftpsoft.html . ...

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• ASP: An Ancient Universe - The Age of the Chemical Elements
• ASP: Using Multicultural Dimensions to Teach Astronomy
• ASP: Indiana Jones and the Astronomers of Yore

... The following table gives the sensitivity of field center, distortion, and image size to various misalignments of the optical elements in the 2.5 m telescope. ... The repointing is done so as to keep the center of the focal plane pointed to the same position on the sky. ... Field shift (this is the mean shift in object positions in the focal plane before repointing the telescope) . ... Image properties are measured for an array of points in the focal plane. ...

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• Primary mirror support
• TUI:Tidbits:Entering Sexagesimal Positions
• Plug-plate distortion

Orbital elements of binary components in a hierachical system can be fit to either the visibility data directly or to the separation and position angle data. ... Then use Data|Astrometry to read a previously prepared file ("zetuma.psn") containing the positional data. ... Semi-major axis = 8.4214471 . Semi-minor axis = 4.7663976 . ... We can now use the Thiele-Innes method to estimate the orbital elements from this apparent ellipse and the data, as implemented with the Util|Orbit button. ...

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• ASTROMETRYFIT
• A visual tour
• The Hierarchical Stellar Systems Model Format

Image Quality and Stability Criteria ­ Transmissive Systems Alex Rea adr34@cam.ac.uk Cavendish Lab oratory, University of Cambridge FTT Technical Meeting Friday 21st May 2010 Alex Rea (Cavendish Labs, Cambridge) Transmissive Systems 21st May 2010 1 / 19 Table Expansion If everything is fixed to the table, and the table expands uniformly, then everything moves radially away from the centre of expansion. ... Like the OAP system, it's the stability that is forcing our hand. ...

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• Astrophysics Group SKALA meets LOFAR
• _element struct Reference

... Archives . ... Magnitude [Eqn] . ... Differential Emission Measures (DEMs) are a summary of the temperature structure of the outer atmospheres (aka coronae) of stars, and are usually derived from a select subset of line fluxes. ... is called the Differential Emission Measure and is a very useful summary of the temperature structure of stellar coronae. ... Tags: DEM , Differential Emission Measure , EotW , Equation , Equation of the Week , stellar coronae . ... Comment ( RSS ) | ... Chandra Blog . ...

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• QPOE Files
• Eclipse Lightcurves for the Hydrostatic Model
• The AstroStat Slog Blog Archive [Book] Elements of Information Theory