Long-term dynamical behaviour of active Centaur P/2010 C1 (Scotti). The continuous curve is the perihelion distance, the dotted curve is the semi-major axis, both drastically reduced after a close (CA = 0.048 AU) encounter with planet Saturn, occurred on April 23, 1877 (vertical long-dashed line). The horizontal dot-dashed lines mark the Jupiter (a_J = 5.2 AU) and Neptune (a_N = 30 AU) semi-major axis, which, following Jewitt (2009), limits the dynamical region of Centaurs.