... To improve the orbital parameters and masses of coorbital satellites of Saturn, Janus and Epimetheus, new observations of these satellites are necessary. ... Nevertheless, the coorbital satellites Janus and Epimetheus will be visible from the Earth when passing near the gap or near the shaded part of the ring. ... The next column contains the designation of the satellite, which will be observed at this time: S10 is Janus, S11 is Epimetheus. ... 2453214.980649 2004-07-28 11h32m08s S10 pole | ...