We attempt to find a progenitor for the ultra-faint object Segue 1 under the assumption that it formed as a dark matter free star cluster in the past .
We look for orbits , using the elongation of Segue 1 on the sky as a tracer of its path .
Those orbits are followed backwards in time to find the starting points of our N-body simulations .
The successful orbit , with which we can reproduce Segue 1 has a proper motion of \mu _ { \alpha } = -0.19 mas yr ^ { -1 } and \mu _ { \delta } = -1.9 mas yr ^ { -1 } , placing Segue 1 near its apo-galacticon today .
Our best fitting model has an initial mass of 6224 M _ { \odot } and an initial scale-length of 5.75 pc .