  We report the discovery of a pair of exoplanets co-orbiting the red dwarf
star GJ3470. The larger planet, GJ3470-d, was observed in a 14.9617-days orbit
and the smaller planet, GJ3470-e, in a 14.9467-days orbit. GJ3470-d is
sub-Jupiter size with a 1.4% depth and a duration of 3 hours, 4 minutes. The
smaller planet, GJ3470-e, currently leads the larger planet by approximately
1.146-days and is extending that lead by about 7.5-minutes (JD 0.0052) per
orbital cycle. It has an average depth of 0.5% and an average duration of 3
hours, 2 minutes. The larger planet, GJ3470-d, has been observed on seven
separate occasions over a 3-year period, allowing for a very precise orbital
period calculation. The last transit was observed by three separate
observatories in Oklahoma and Arizona. The smaller planet, GJ3470-e, has been
observed on five occasions over 2-years. Our data appears consistent with two
exoplanets in a Horseshoe Exchange orbit. When confirmed, these will be the
second and third exoplanets discovered and characterized by amateur astronomers
without professional data or assistance. It will also be the first ever
discovery of co-orbiting exoplanets in a Horseshoe Exchange orbit.
