Fitting of the CME with the graduated cylindrical shell (GCS) model at three different times and from three different perspectives: Earth (left), STEREO-A (middle), and STEREO-B (right). The CME fit was done firstly at 15:24 UT when the CME was first visible in the LASCO C2 field of view. Then the fitting parameters were used to estimate the fit at earlier times when the CME was observed only in the Earth at EUV wavelengths and STEREO-A perspectives. The left panels show AIA 193 Å images of the Sun, while the middle and right panels show composite EUVI 195 Å together with COR1 white–light images from the STEREO-A and STEREO-B perspectives, respectively. The magenta wire mesh is the resulting CME fit using the GCS model.