Orbits of a test particle in the potential well of Hydra A moving with different velocities. The red arrow show the position of the observed LEDA 87445 group at 1.1 Mpc from the centre of Hydra A (at coordinates 0, 0). The dashed red circle is the Keplerian orbit (i.e. smaller orbits are gravitationally bound with the main cluster). The circles along the orbits are spaced in 0.25 Gyr intervals.