... Matrix of Transformation | ... Every set of attitude coefficients (corresponding to a line in attitude data file) is valid for its own time interval and gives the possibility to get a matrix N of tranformation from the GSE coordinate system to the S/C coordinate system as well as a matrix M of tranformation from the S/C coordinate system to the GSE coordinate system. ... and the matrix M of transformation from the S/C to the GSE systems (the direction cosines matrix) is: . ... V GSE = M * V S/C . ...

Finally, the radial velocity is also expressed in the reference frame of the Cosmic Background Radiation. This velocity is noted v3k . It is calculated from the heliocentric velocity v using the total solar motion of 360 km/s towards the direction defined by the B1950 equatorial coordinates B 11.25 H - 5.6 deg (Lubin Villela 1986). v3k = v + 360 cos(theta) Where theta is: cost(theta) = sin(de3k) sin (de1950) + cos (de3k) cos(de1950) cos(al3k - al1950) . ...

... Meta Index / Home Page This section documents the parameters recognized by this task (if any). ... yes . ... If weightstyle =`gti', the task attempts to obtain a list of Good Time Intervals (GTIs), the exact way these are supplied being dictated via the parameter gtistyle ; these GTIs are ANDed with the attitude time bins; the net GTI in each bin provides the weight. gtistyle . ... If gtistyle =`user', the task obtains a single, simple GTI for all chip images from the parameters tstart and tstop . ...

Calculation attitude parameters: . ... Axes position of the GSE system relative to the s/c coordinate system is determinated by 3 angles Alpha , Betha and Gamma . Alpha and Betha determinate coordinates of a new XGSE axis, while Gamma determinates YGSE or ZGSE. ... String in the attitude file look like this: . ... 980307 09 16 21 604 -665.00 233.00 264.00 . ... 980307 09 16 30 604 -669.00 336.00 113.00 . ... 980307 09 16 42 604 -672.00 359.00 -114.00 . ... Angles Alpha Beta Gamma (rad) . ...

Next: Star Formation Rate and Up: No Title Previous: Calculation of Evolutionary Tracks . To start calculations, we choose the distributions of the initial binary parameters: the mass of the primary ZAMS component, , binary mass ratio, , orbital separation a . ... whereas the mass ratio distribution is not. ... The zero assumption often made is that the mass ratio distribution has a flat shape, that is binaries with a high mass ratio occur as frequently as those with equal masses. ...