... 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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... To run the <LAYER> version of the example, select: flower.htm . ... However, if the page had several layers with absolute positions, and you wanted to place another layer in a relative position to one of the existing layers, you could use inline JavaScript to calculate the value for LEFT or TOP . ... In this example, there is really no need to use inline JavaScript to position the last flower layer, since you could just let the TOP value default to its natural value, as in the other flower layers. ...

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First results of X/S and X/Ka-band catalog combinations with full covariance information Andreas Iddink , Christopher Jacobs, Thomas Artz, Axel Nothnagel 22.09.2014 First results of S/X and X/Ka-band catalog combinations with full covariance information Andreas Iddink ­ 22.09.2014 Motivation Features of the ICRF2 ICRF2 (Defining- Sources ) 3414 ... Step: Import of the X/Ka catalog with full covariance information (Data provided by Christopher Jacobs et al. ...

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• http://www.gao.spb.ru/english/personal/malkin/publ/zm08g.pdf
• http://www.gao.spb.ru/english/personal/malkin/publ/zm14e.pdf

... To mark coordinate net in plot, first select Plate in menu bar and then Coordinate net in drop-down menu. ... User has possibility to save plot of sky or to print it using standard means. To save the file select File item in menu bar and then Save As... in drop-down menu. ... To print plot of plate select File item in menu bar and then take advantage of options Print Preview , Print Setup , Print. ... To return to the list of centers click on x button in title bar. ...

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... sin f = y / r . cos f = x / r . ... They are now viewed as new definitions of the sine and cosine, for the polar angle f given by x and y ( a slightly different way of formulating this definition is described further below ). ... sin 2 f + cos 2 f = 1 . ... Angle . ... Many trigonometry texts define the sine and cosine slightly differently, using the so-called unit circle . ... Then the distance AB ("the sine line") equals sin a , and the distance OA ("the cosine line") equals cos a . ...

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Home - News - Download - Documentation - Search - FTP . ... Macros . ... Using these macros also allows a simple find jump history: essentially a position stack is managed (as a string) - the entries (lines) in the string are handled as tag entries. ... The macros use other macro files: . ... Although I have implemented a Return to previous macro, I have not implemented a Goto to next in history list macro, for people who want to go backwards and forwards through their find jump history. ...

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... 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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... Shock is a non-linear plasma wave generated by plasma flow (Burgess, 1995). ... Shocks are thus places where plasma and field go through dramatic changes in density, temperature, field strength, and/or flow speed. If there is no plasma flow through the surface (Un <> 0) or there is no dissipation and compression across it, we talk about discontinuity only, not shock. ... Contact discontinuity . ... Plasma pressure and field strength increase at shock; magnetic field bends away from normal . ...

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project - project data along a line or great circle , generate a profile track, or translate coordinates. project [ infile ] -F flags -C cx / cy [ -A azimuth ] [ -Dd|g ] [ -E bx / by ] [ -G dist ] [ -H [ nrec ] ] [ -L [ w ][ l _ min / l _ max ] ] [ -M [ flag ] ] [ -N ] [ -Q ] [ -S ] [ -T px / py ] [ -V ] [ -W w _ min / w _ max ] [ -: ] [ -bi [ s ][ n ] ] [ -bo [ s ] ] project reads arbitrary ( x , y [, z ]) data from standard ... H Input file(s) has Header record(s). ...

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• Space position